Honeywell CM4 Technical Handbook
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Honeywell CM4 Technical Handbook

Four-point continuous monitor
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CM4 Four-Point Continuous Monitor
Technical Handbook
•
TOC
•
CM4 Overview
•
Controls and Indicators
•
Installation
•
Basic Operation
•
Calibration Mode Funct.
•
Review Menu Functions
•
Setup Menu
•
Service Menu
•
Maintenance
•
Options
•
Specifications
•
Fault Listing
•
Detectable Gases
•
Printer Options
•
Serial Comm Protocol
•
Installation Drawings
•
LonWorks
Protocol
®
•
Warranty Statement

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  • Page 1 CM4 Four-Point Continuous Monitor Technical Handbook • • Calibration Mode Funct. • Options • Serial Comm Protocol • CM4 Overview • Review Menu Functions • Specifications • Installation Drawings • Controls and Indicators • Setup Menu • Fault Listing •...
  • Page 2 CM4 Four-Point Continuous Monitor Your Uptime Is Our Top Priority Because your uptime is our top priority, Honeywell Analytics, Inc. provides you with a 24-hour Emergency Service Hotline. During Business Hours: Honeywell Analytics Inc. (U.S.A.) Corporate Headquarters: 847-955-8200 (Toll-Free) 800-323-2000 www.honeywellanalytics.com...
  • Page 3 The symbols are easily recognizable in any language. Below is a listing of symbols used on Honeywell Analytics products and a brief description of what the symbols represent. (Your instrument model might not use all of the symbols listed here.)
  • Page 4 Cabling Type The following cable parameters must be considered: Overview Braid Must have minimum 90% coverage. Your Honeywell Analytics instrument has been designed to comply Foil When used with braid, provides 100% coverage. with applicable Electromagnetic Compatibility (EMC) standards at NOTE: the time of manufacture.
  • Page 5 1.4.1 Display ....................1-6 3.3 Surveying the Installation Site ............... 3-3 1.4.2 Status and Alarm LEDs ..............1-6 3.3.1 Placement of the CM4 ..............3-3 1.4.3 Keypad ....................1-6 3.3.2 Exposure to Dust and Humidity..........3-3 1.4.4 Power LED ..................1-6 3.3.3 Sample Transport Time ..............
  • Page 6 3.5.1 Wall Mount ..................3-5 4 Basic Operation 3.5.2 Rack Mount Kit ................. 3-6 4.1 Introduction ....................4-2 3.5.3 Rack Mounting the CM4-P ............3-7 4.2 Monitor Mode ....................4-2 3.5.4 Rack Enclosures ................3-7 4.2.1 Exiting Monitor Mode ..............4-3 3.6 Installing Sample Lines ................
  • Page 7 CM4 Four-Point Continuous Monitor Table of Contents 5.3 Function 1.2 – Manual K-Factor ............5-3 7.1.1 Enabling/Disabling the Keypad ..........7-2 5.4 Function 1.3 – Calibrate Current Loop ..........5-4 7.2 Function 3.1 – Point Enable ..............7-3 5.4.1 Selecting the Signal Levels Manually ........5-5 7.3 Function 3.2 –...
  • Page 8 8.8 Function 4.7 – MDA Service ..............8-12 10.2.3 Using an External Power Supply ...........10-3 8.9 Function 4.8 – Pump Limits ..............8-12 10.2.4 Using the CM4 Monitor’s Internal Power Supply .......10-3 8.9.1 Operation ..................8-12 10.3 Sample Line Integrity Option ............10-5 8.9.2 Set-up ....................8-12 A Specifications 8.10 Function 4.9 –...
  • Page 9 CM4 Four-Point Continuous Monitor Table of Contents D.1.4 Enclosure Printer Kit ..............D-2 Time Format ....................E-6 D.1.5 Printer Share Box ................D-2 Date/Time Examples ................E-6 D.2 Jumpers ......................D-3 Concentration Data Format Code ............E-6 D.3 Cabling ......................D-4 E.3 Protocol Command Definition ...............
  • Page 10 Set Duty Cycle - 0x65 ................E-25 Set Filter - 0x66 ..................E-26 Get Duty Cycle - 0x69 ................E-26 E.5 Operation ....................E-27 E.5.1 CM4 Instrument Power-up ..............E-27 E.5.2 Commands ....................E-27 E.5.3 Responses ....................E-27 E.6 Example Packets ..................E-27 E.7 Serial Device Applications ..............E-31...
  • Page 11 CM4 Four-Point Continuous Monitor 1 CM4 Overview CM4 Technical Manual...

  • Page 12: Introduction

    These programmable limits are factory-set at TLV and 2 TLV. Each point may be up to 300 feet (90 m) from the CM4 location. This allows operators to monitor gas concentrations in an area removed from the location where gas may actually be leaking.

  • Page 13: Sampling And Monitoring System

    CM4. There are four inlets, one for each monitored point, and an The high speed of transport flow allows rapid monitoring and response exhaust outlet. time when using long lines from monitoring points to the CM4. A small 1.2.2 Pump portion of the transport flow is analyzed to determine concentration levels.

  • Page 14: Detection System

    See Figure 1-3 for point stain location. To monitor a point, the detection system detects and measures a specific gas or family of gases in the sample. The CM4 interprets the data and responds appropriately. See Section 3.4...

  • Page 15: Chemcassette ® Detection System

    “crack” those gases into Chemcassette ® 3. An LED (3) in the CM4 detector head illuminates the sample detectable gases. Current CM4-P detectable gases are: stain. The detector (4) optically measures the stain. Nitrogen Trifluoride (NF 4.

  • Page 16: Displays And Controls

    1.4.4 Power LED The displays and controls clustered on the front panel of the CM4 include: The power LED at the bottom right of the panel indicates the CM4 Display Power LED is powered up. A blinking yellow power LED indicates the keypad is locked, requiring a passcode for any CM4 operation.

  • Page 17: Power Connection

    1.5.2 Power Connection programmed alarm level, it activates a series of signals. The CM4 Connect AC power to the CM4 at the rear panel. The power switch is continues monitoring during an alarm condition. located above the power line connection.

  • Page 18: Instrument Diagnostics

    • The display shows the fault information • If the fault generated is an instrument fault and the CM4 is appropriately configured, the current level on the optional analog 4-20 mA output port is reduced to 2 mA. Point...

  • Page 19: Controls And Indicators

    CM4 Four-Point Continuous Monitor 2 Controls and Indicators CM4 Technical Manual...

  • Page 20: Introduction

    Power LED indicator (4) NOTE: On newer style CM4 (S/N XXX-5000 and greater) and all CM4-P models, the flow controls (item 6) are located on the lower left of the front panel. An air filter (item 10) is located on the lower right.

  • Page 21: Leds And Point Id Labels

    Point Status LED Function keys access menus and functions. Function keys include: The monitoring status LEDs indicate the following conditions: • MONITOR • Green for the specific point when the CM4 is monitoring that • PROGRAM point • RESET •...

  • Page 22: Relays

    CM4 Four-Point Continuous Monitor 2.3 Relays Relays activate to indicate significant change in gas concentration or instrument status. The relays are on a removable panel on the back of the instrument. The main chassis of the unit is easily removed while leaving terminal contacts intact.
  • Page 23 CM4 Four-Point Continuous Monitor 3 Installation CM4 Technical Manual...

  • Page 24: Introduction

    Wall and rack configurations require either adapter kits or a separate enclosure. See Section 3.5.3 for information. When selecting a site for installation of the CM4, consider the mounting option best suited for your location. Operators can place the CM4 up to CM4 Technical Manual...

  • Page 25: Components And Connections For Installation

    Figure 3-1: CM4 Back Panel the manufacturing or storage locations that it monitors. Legend Operators can place the CM4 up to 300 feet (90 m) from monitoring 1 Sample inlets and exhaust 6 COM port points to monitor gas concentrations in an area removed from the...

  • Page 26: Sample Transport Time

    The CM4 is factory configured for tabletop use. Rack mounting configurations. The CM4 is 17 inches (43 cm) wide and 17-3/4 inches and wall mounting require additional procedures for mounting and (45 cm) in depth.

  • Page 27: Wall Mount

    Make sure brackets are securely fastened and level before locking instrument in position 16.25 CAUTION (412.75) The CM4 weighs about 50 pounds (23 kg). Make sure all installation steps and handling procedures are done with protection and safety margin for this load. (203.00) Figure 3-2: Wall Mount...

  • Page 28: Rack Mount Kit

    CM4 Four-Point Continuous Monitor 3.5.2 Rack Mount Kit The CM4 Rack Kit includes two custom slides and hardware for installation in a customer-supplied standard 19 inch rack. For detailed installation prints, ask for MDA drawing #874550-I. Figures 3-3, 3-4, and show rack mounting installation details.

  • Page 29: Rack Mounting The Cm4-P

    3.5.4 Rack Enclosures The rack enclosure configurations provide space for up to seven CM4 CAUTION units (or five CM4 units plus a printer) in an Honeywell Analytics- supplied cabinet. The pyrolyzer operates at a very high temperature, therefore CM4-P units should not be placed immediately adjacent to each other. To The CM4 rack enclosure will be custom configured for each application.
  • Page 30 CM4 Four-Point Continuous Monitor Figure 3-6: Rack Enclosure CM4 Technical Manual...

  • Page 31: Installing Sample Lines

    FEP Teflon tubing must be used to assure proper sample transport. Hydrogen Bromide (HBr) (low level) using the standard Mineral Acids Other types of tubing are not sufficiently inert. Your Model CM4 includes Chemcassette (p/n 874337) has a sample line limit of 100 feet.

  • Page 32: Tubing Connections

    LOW-VOLTAGE RELAY WIRING WIRING Figure 3-9: Point Legend To keep track of the location corresponding to each point, the CM4 Figure 3-7: Tubing Connections front panel contains an area to the right of the status and alarm LEDs Legend for point identification. Write the name of each location on the area...

  • Page 33: Installing Sample Line Particulate Filters

    Line voltage should fluctuate no more than ± 10%. 3.8.1 Exhaust Line Installation Guidelines Properly ventilate the exhaust line, which should not exceed 50 feet (15 m) in length. If longer distances are required, contact Honeywell Analytics. • If multiple CM4s are installed in the same location, use a separate line for each exhaust outlet •...

  • Page 34: Wiring Relays

    Use caution when servicing fuses or terminal blocks. Power to contacts is supplied externally. 3.10.1 Relay Contacts The CM4 has 13 form C, single-pole, double-throw relays that activate Table and Rack Mount Wall Mount external alarm devices. Contacts are available for each circuit to accommodate installation of external devices.

  • Page 35: Wiring Guidelines

    20 mA full scale defaults to the full scale of the gas, but can be CAUTION configured lower. Furthermore, the CM4 can be configured lower to reduce these output Failure to replace and retighten hardware after servicing can currents to 2 mA if certain faults occur. These outputs will drop to zero adversely affect instrument performance and EMC compliance.

  • Page 36: Power On/Off

    Use the rocker switch on the right rear of the unit, above the power 1. Access Service Mode 4.8 in the SERVICE (4.SERVICE) menu. cord, to turn on power to the Model CM4. For Rack Mount units, use The display will show: the power panel at the top of the rack.

  • Page 37: Function And Cursor Keys

    Press MONITOR to initiate monitoring. 3.15.2 PROGRAM Press PROGRAM to exit the Monitor Mode. 3.15.3 RESET/ESCAPE Press RESET to reset all CM4 alarm and fault LEDs and relays. Also, press RESET to escape from subroutines. 3.15.4 ENTER Press ENTER to confirm configuration changes.

  • Page 38: Basic Operation

    CM4 Four-Point Continuous Monitor 4 Basic Operation CM4 Technical Manual...

  • Page 39: Introduction

    Keypad Locking Feature (Section 4.7) NOTE: If you are not working with a CM4 as you read these sections, refer Any time power is lost to the CM4, it enters Monitor Mode to the illustrations in Section automatically after power is restored.

  • Page 40: Exiting Monitor Mode

    If the printer option is installed, press MONITOR twice to print TWAs any service on the instrument, always wait 30 minutes after switching while in Monitor Mode. The CM4 prints the current TWA information. off power to allow the pyrolyzer to cool.

  • Page 41: Display Lock-On During Monitor Mode

    PT4-CM4-851-0006 Print Alarm History NO ALARM HISTORY If the CM4 is equipped with a printer, see Figure 4-1 for an example of a typical printout. The printout of the alarm history shows the most END OF ALARM HISTORY recent alarm first for up to 16 total alarms.

  • Page 42: Fault History During Monitor Mode

    TRANSPORT ERROR 2. Press 1 to end Monitor Mode and go to Program Mode. 02/29/05 14:22 FLOW FAILURE PT1 If you do not press 1 within three seconds, the CM4 returns to Monitor Mode. 02/29/05 14:19 LOSS OF FLOW PT4...

  • Page 43: Alarms And Faults

    Reset fault and alarm relays 4.4.2 Faults Press MONITOR to return to Monitor Mode. If an instrument fault or maintenance fault is detected, the CM4 displays NOTE: the most recent fault and a fault code after the last point display. The The CM4 signals a fault after a period of idle time.

  • Page 44: Programming By Scrolling

    For example, to select the alarm history for Point 3, 4. Press ENTER when the display shows the desired mode press the following in sequence: selection. Depending on the entry, the CM4 displays the menu (subfunction) choices. • 2 (to access the Review Mode) •...

  • Page 45: Cm4 Menu Structure

    CM4 Four-Point Continuous Monitor 4.6 CM4 Menu Structure 3.5.6 SET DUTY CYCLE 3.6 ACCESS SETUP This section shows the complete CM4 software menu structure, including 3.6.1 EN/DIS KBD LOCK 3.6.2 EN/DIS MENU PASSWD the four main menus and the functions available from each menu.

  • Page 46: Keypad Locking Feature

    Set the password to some desired value between 90000 and 99999. The power LED in the lower right corner of the CM4 control panel indicates the status of the keypad. Steady green indicates the keypad is unlocked. Flashing yellow indicates it is locked.
  • Page 47 CM4 Four-Point Continuous Monitor CM4 Technical Manual 4-10...
  • Page 48 CM4 Four-Point Continuous Monitor CM4 Technical Manual 4-11...
  • Page 49 CM4 Four-Point Continuous Monitor CM4 Technical Manual 4-12...

  • Page 50: Calibration Mode

    CM4 Four-Point Continuous Monitor 5 Calibration Mode Functions CM4 Technical Manual...

  • Page 51: Introduction

    Chemcassette Analyzer’s optics system. The • 1.3 CALIBRATE CURRENT LOOP controls the optional CM4 compares the nominal stain values stored in the instrument’s external analog output for testing and installation (see memory to the values the Optics Verification Card produces.

  • Page 52: Function 1.2 – Manual K-Factor

    4. Insert the verification card into the detector head with Stain Some local fire ordinances require certified calibration at 1 facing the front of the CM4. Make sure that Stain 1 is fully installation or annual intervals. While dynamic calibration is inserted into the detector head.

  • Page 53: Function 1.3 – Calibrate Current Loop

    CM4 Four-Point Continuous Monitor K-factor range limits are 0.200 to 5.000. Using a value outside of WARNING these limits displays the following, after which the CM4 returns to the previous display: Use appropriate safety precautions when handling toxic gases. Properly vent toxic gases.

  • Page 54: Selecting The Signal Levels Manually

    PT 1 20 mA PRESS 2 mA The CM4 repeats the sequence showing level of output, from 4 mA to Press RESET to return to the Calibration Mode without toggling the 20 mA (or 2 mA to 20 mA if selected). Press RESET twice to return to test levels.

  • Page 55: Selecting Signal Levels – Step

    Similarly, this permits changing the 20 mA DAC endpoint. Press Purpose <ENTER> to proceed. The Tune Current Loop function allows you to adjust the CM4 monitor’s SELECT POINT output level so that it is correlated from zero to full scale with a driven The above procedure should be repeated for all four points.
  • Page 56 CM4 Four-Point Continuous Monitor 6 Review Menu Functions CM4 Technical Manual...

  • Page 57: Introduction

    Section 6.7) The Review Menu contains eight functions which permit viewing • 2.7 INST. SER. NUMBER displays CM4 serial number (see data. It is not possible to change the CM4 configuration with these Section 6.8) functions. • 2.8 PRINT MENU prints the CM4 menu options (see Section 6.9)

  • Page 58: Display Alarm History

    The CM4 stores up to 16 alarms. Press CURSOR ARROW LEFT/ Alarm history is not cleared using the RESET key. The display returns RIGHT to scroll through the list of alarms. The CM4 displays date, to normal after ten seconds.

  • Page 59: Function 2.2 – Fault History

    12/27/95 09:31 L2 3. Press 2 to print the fault history. Alarm history is not cleared using the RESET key. The CM4 sends the fault history to the printer. Press RESET to return to the Review menu. 08/26/05 13:51 CM4-851-0000 FAULT HISTORY 6.3 Function 2.2 –...

  • Page 60: Function 2.3 – Current Twa

    3. Press 2 to print the TWA history. Fault history is not cleared using the RESET key. Press RESET to The CM4 calculates and prints TWA information based upon the return to the Review Menu. elapsed time (maximum of 8 hours) from the last entry into Monitor Mode, power-up, or completed TWA printout until the last sample prior 6.4 Function 2.3 –...

  • Page 61: Display Twa

    POWER RESTORED 06/01/05 07:30 Press RESET to return to the Review Menu. Figure 6-5: Typical Last Power-Down Printout The CM4 also prints this information when power is restored after a power loss. CM4 Technical Manual...

  • Page 62: Display Last Power-Down

    Honeywell Analytics programs and stores the customer 1. Press PROGRAM to exit Monitor Mode. name and location in the CM4. This information is included in TWA 2. From the 2–RE VIE W MENU, choose the subfunc tion and other printouts.

  • Page 63: Function 2.6 – Print Configuration

    The CM4 only prints the data. Data is not displayed. Press RESET to return to the Review Menu. Instructions For the CM4-P, the letter “P” replaces the hyphen used in standard 1. Press PROGRAM to exit Monitor Mode. CM4 serial numbers, i.e. 851P000X for a CM4-P instrument, and 2.
  • Page 64 CM4 Four-Point Continuous Monitor 5/15/05 10:06 CM4-851-0000 SYSTEM CONFIGURATION PRINTOUT ABC MANUFACTURING CO., CHICAGO, IL. Chemcassette: Hydrides NAME ABBREVIATION ARSINE PHOSPHINE SILANE DIBORANE TERTIARYBUTYLARSINE HYDROGEN SULFIDE DRY ARSINE HYDROGEN SELENIDE NAME K-FACTOR ALARM 1 ALARM 2 20 mA FS ENABLE PT1-CM4-851-0006 1.000...

  • Page 65: Function 2.8 – Print Menu

    The CM4 prints a complete listing of the master menu. See Section for an example. If the printer is not enabled or a printer fault occurs, the CM4 displays the following: PRINTER DISABLED Correct the fault and repeat Steps 1 and 2.
  • Page 66 CM4 Four-Point Continuous Monitor 7 Setup Menu CM4 Technical Manual...

  • Page 67: Introduction

    3.3.3 PRINTER FORMAT 3.3.4 RELAY STATE The CM4 includes a function that allows enabling and disabling of 3.3.5 2mA FAULT OPER the keypad. The function toggles between enabling and disabling the keypad when a passcode is entered via the keypad.

  • Page 68: Function 3.1 – Point Enable

    CM4 Four-Point Continuous Monitor The following is an overview of each of the seven functions. The The display reads: following sections describe each of these functions in detail: SELECT POINT 3. Select Point 1. • 3.1 POINT ENABLE disables points not needed (see Section 7.2)
  • Page 69 If the printer output is enabled, the display reads: Be sure you have installed the proper Chemcassette in the analyzer ® for the type of gas being measured; the CM4 will not show an error PRINT? 1=YES 0=NO prompt for installation of an incorrect type of Chemcassette ®...

  • Page 70: Defining The Point Id

    CM4 Four-Point Continuous Monitor 9. Press ENTER to accept the value and advance to the display 7.3.2 Defining the Point ID prompt used to set the current loop Full Scale values: This feature permits changing the default point ID label to a more informative string.

  • Page 71: Function 3.3 – Output Options

    Press RESET again and then press 1 to print the new configuration and the date and time of change if the printer is enabled, or press 0 The CM4 Communications Protocol is described in detail in Appendix to return to the Set-Up Menu.

  • Page 72: Optional Printer Port (3.3.2)

    INST ADDRESS 001 4. Press ENTER. The display reads: 6. Press ENTER after selecting the desired address. A unique address must be assigned to each CM4 sharing an RS 485 PRINTER 9600 BAUD bus. 5. Press CURSOR ARROW RIGHT to advance the display from The display then returns to the output options function.

  • Page 73: Printer Format (3.3.3)

    HW HANDSHAKE ENABLE This option enables RTS/CTS flow control on the printer output. The 3 – PRINTER FORMAT CM4 is not capable of Xon/Xoff flow control. The display reads: Press CURSOR ARROW LEFT or RIGHT to toggle between enable SELECT REPORT and disable.

  • Page 74: Relay State (3.3.4)

    1=ENRGZD 0=DE-ENRGZD The display shows: The cursor is flashing over the current set-up. PRINT FORMAT UPDATED 3. Press either: 4. The CM4 automatically returns to the Output Options menu. • 1 to energize relay contacts 7.4.4 Relay State (3.3.4) •...

  • Page 75: Ma Fault Operation (3.3.5)

    The the Model CM4’s response, but reduce tape consumption. CM4 differentiates between a power loss and a fault by dropping the signal to 0 mA after a power loss or CPU failure and 2 mA when an The minimum window time (or Duty Cycle) defaults to zero seconds.

  • Page 76: Function 3.4 – Configuration

    (enabled) Choose 1 or 0 to enable or disable that point for Duty Cycle. for Duty Cycle. In the CM4 software, the “monitor relay action during Duty Cycle” bits default to TRUE, but can be set to FALSE with the 5.

  • Page 77: Function 3.5 – Date & Time

    Display time for concentrations displayed in Monitor Mode Instructions • Print time for the TWA • Time interval the CM4 operates in Idle Mode before issuing 1. Press PROGRAM to exit Monitor Mode. a maintenance fault 2. From the 3–SET-UP MENU, choose the subfunction 5–DATE •...

  • Page 78: Set Display Cycle (3.5.3)

    TWA. For example, to print at 11:59 a.m., press DISPLAY CYCLE IS SET 1, 1, 5, 9. DATE AND TIME 4. Press ENTER. The display reads: TWA TIME UPDATED The CM4 returns automatically to the date and time function. CM4 Technical Manual 7-13...

  • Page 79: Set Idle Time (3.5.5)

    & TIME, then 6–SET DUTY CYCLE. Purpose 3 – SET-UP MODE Use the set idle time function to set the amount of time the CM4 remains out of Monitor Mode before causing an instrument fault. This is 5 – DATE & TIME to prevent the unit from being accidentally left out of Monitor Mode.

  • Page 80: Set Key Lock Code

    If the code is successfully verified, the display reads: 2. From the 3–SET-UP MENU, choose the subfunction 6–ACCESS SETUP, then 1–EN/DIS KBD LOCK. CODE CHANGED The CM4 returns automatically to the Set-Up Menu after entering the 3 – SET-UP MODE code. 6 – ACCESS SETUP...

  • Page 81: Function 3.7 – Maintenance Set-Up

    CM4 Four-Point Continuous Monitor 7.8 Function 3.7 – Maintenance Set-Up The display shows: Use the maintenance set-up function to enable/disable: COUNTER ENABLED 3. Press CURSOR ARROW RIGHT to toggle between enabling • Fault counter that indicates low Chemcassette ® and disabling the Chemcassette counter.

  • Page 82: External Filter Timer (3.7.3)

    CM4 Four-Point Continuous Monitor 3. If you want to: The display shows: • Disable the counter, enter zeros for all three digits EXT FILTER 000 DAYS • Enable the counter, use CURSOR ARROW LEFT/RIGHT The cursor flashes over the first zero. The default is 000, which to move forward/backward to the desired digit indicates that the timer is disabled.
  • Page 83 CM4 Four-Point Continuous Monitor 8 Service Menu CM4 Technical Manual...

  • Page 84: Introduction

    LOAD Chemcassette the Watch Dog relay. SET FLOW NOTE: The relay test simulates an actual alarm condition and the CM4 MDA SERVICE activates the appropriate connected relays (including point alarms PUMP LIMITS and general alarms). Notify appropriate personnel that you plan to conduct a test.

  • Page 85: Alarm Tests

    Use this function to simulate a gas concentration while the instrument 4 – SERVICE MODE is in the Monitor Mode. In the Alarm Test Mode, the Model CM4 will permit the insertion of the Optics Test Card into the optics block to 2 –...
  • Page 86 CM4 Four-Point Continuous Monitor When the simulation mode ends (by user or time-out), the printer will • The Model CM4 will produce full scale alarms on all four print “ALARM SIMULATION MODE ENDING. ” points initially. Wait for the concentration to decay. Typically, this takes about two minutes.

  • Page 87: Function 4.2.3-Optics Alarm Test

    1 and alarm 2 relays activate. protocol will not provide any indication of this test. The following messages are printed: Table 8-1 is a sample dialogue between the Model CM4 and a typical OPTICS ALM TEST STARTING user. OPTICS ALARM TEST ENDING...
  • Page 88 The user inserts the stain card incorrectly or the optics hardware for point 1 is out of tolerance PASSED PT (NONE) No relay or other output activates. The following is printed: OPTICS ALARM TEST STARTING, PASSED POINTS {NONE} Table 8-1: Sample Dialog Between CM4 and User CM4 Technical Manual...

  • Page 89: Function 4.3 – Diagnostics

    • 0 to display the report. NEURON NOT DETECTED 4. Press CURSOR ARROW LEFT/RIGHT to move the cursor forward/backward through the data. The CM4 shows a sequence of displays: LON ID= 123456789012 Software version and flash memory kernel Pump limit settings...

  • Page 90: Function 4.4 – Reset System

    Chemcassette ® • Clear the system of a software error The CM4 can detect common human errors during the tape loading process to increase the integrity of monitoring. Each Chemcassette ® CAUTION includes a unique 12-digit Chemcassette Identification (CID) number that ®...
  • Page 91 Using an incorrect Chemcassette defeats the ® If the external filter time is active (see Section 7.8.3). The screen CM4’s ability to warn of dangerous gas concentrations. displays: Instructions XX DAYS REMAINING 1. Press PROGRAM to exit Monitor Mode. then displays: 2.
  • Page 92 • 0 to exit the LOAD Chemcassette function without ® ® display will show one of the following messages: advancing the tape. The CM4 returns automatically to the Service Menu. Imminent Fault Message Cause Recovery 8. After replacing Chemcassette , always verify the optics (see ®...

  • Page 93: Function 4.6 – Set Flow

    CM4 Four-Point Continuous Monitor 8.7 Function 4.6 – Set Flow NOTE: The previous display occurs only when you are exiting SET Use the set flow function to select flow balance for each point. FLOW. Instructions ADJUST=1 EXIT=2 1. Press PROGRAM to exit Monitor Mode.

  • Page 94: Function 4.7 – Mda Service

    With the pump (4–SERVICE) menu. The display will show: running a “normal reading” with no tubing attached to the CM4 monitor, the reading should be 375-475 counts (13.8 to 17.5 inches Hg, or...

  • Page 95: Function 4.9 – Reboot

    A reboot function has been added to allow rebooting without cycling exhaust, low capacity pump, or low supply vacuum. The total Model CM4 power. Figure 8-5 shows the prompts displayed. flow is reduced, affecting transport times and flow rate through the Chemcassette .
  • Page 96 CM4 Four-Point Continuous Monitor 9 Maintenance CM4 Technical Manual...

  • Page 97: Introduction

    ® 2. From the 4–SERVICE MENU, Choose the subfunction 5–LOAD (Section 9.2) Chemcassette ® • Filter maintenance covers the replacement of CM4 filters 4 – SERVICE MODE (Section 9.3) • Fuse replacement (Section 9.4) 5 –...
  • Page 98 CM4 Four-Point Continuous Monitor 5. Press either: Lifetime Part • 1 to reset the timer after servicing the filters (see Section 9.3) Description In Bag Out of Bag Number (days) (days) • 0 to continue without resetting timer Hydrides 874300...

  • Page 99: Verify Optics

    NOTE: 5. Insert the verification card into the detector head with Stain 1 facing the front of the CM4. Make sure that Stain 1 is fully To avoid carrier torque and damage, do not tilt the carrier. Contact inserted into the detector head.

  • Page 100: Loading The Carrier

    CM4 Four-Point Continuous Monitor CM4 OPTICS TEST CARD INSTRUCTIONS FOR OPTICS VERIFICATION PROCEDURE, ENTER CALIBRATION MODE 1.1, OPTICS VERIFY SEE MANUAL FOR DETAILS. STAIN 1 Figure 9-2: Optics Verification Card 9.2.3 Loading the Carrier To load the Chemcassette carrier: ®...

  • Page 101: Installing The Chemcassette ®

    CM4 Four-Point Continuous Monitor 9.2.4 Installing the Chemcassette ® With the fresh Chemcassette inside, install the carrier as follows: ® 1. Open the tape load lever. 2. Install the carrier onto the spool hubs. Make sure the Chemcassette tape is between the nosepiece and optics ®...

  • Page 102: Checking Flowrates

    CM4 Four-Point Continuous Monitor 9.2.5 Checking Flowrates In this example, notice that Point 3 has drifted out of range. The instrument indicates the condition by displaying the following: Each time you replace a Chemcassette tape, check flowrates while in ®...

  • Page 103: Filter Maintenance

    CM4 Four-Point Continuous Monitor 9.3 Filter Maintenance The CM4 utilizes filters to protect the unit from dust particles and potentially damaging gases. Table 9-2 provides maintenance information about filters. Figure 9-6 shows the relative positions of the various filters. See Section 3.7...

  • Page 104: Cm4 Internal Filter Replacement Procedure

    3 Gray ring 2. On older model CM4’s, release carrier retaining clip by pressing The Model CM4 will use one of the filter blocks shown in Figure 9-7. toward rear of unit. Note the positions of the filters for your type of filter block. The filter 3.

  • Page 105: Sample Line Particulate Filter

    Sample line particulate filters prevent dust from entering through Figure 9-8: CM4-P Filter Block the sample line. Particulate filters are not recommended for There are nine filters in the CM4-P filter block: four charcoal for Freon ® all applications. See Appendix A for compatibility information.

  • Page 106: Fuse Replacement

    Model CM4-P has an air filter located on the lower right of the front To replace the AC line fuse: panel, located where the flow control valves are on the standard Model 1.
  • Page 107 ® error occurs. Instructions 1. Turn off power to the CM4. 2. Open the tape load lever and remove the Chemcassette carrier. ® 3. Unscrew two screws on the top panel and lift it. The panel pivots on studs as shown in Figure 9-10.

  • Page 108: Installing Microtube Assembly

    3. Replace tubing. Firmly tighten fitting at each end. NOTE: Flow calibration will be affected by up to 20%. Contact Honeywell Analytics Service Department for calibration information. CAUTION Accidental exchange of any tube in this block may cause erroneous readings and improper system operation.
  • Page 109 CM4 Four-Point Continuous Monitor 10 Options CM4 Technical Manual 10-1...

  • Page 110: Serial Communications

    An additional advantage to The serial communications ports are connected to the remote device(s) the remote reset option is it can be located away from the CM4 unit. In with 9-pin (DB9) plugs and cables.

  • Page 111: Wiring Considerations

    CM4 monitor. Ensure all wiring installation is performed by qualified within the CM4 monitor. A schematic of the circuit is shown in Figure personnel following all national and local electrical codes.
  • Page 112 CM4 Four-Point Continuous Monitor A schematic of the circuit using the CM4 monitor’s internal 24 VDC power supply is shown in Figure 10-2. PT. 1 PT. 2 PT. 3 PT. 4 T.B. T.B. T.B. T.B. Figure 10-2: Using the CM4 Monitor Internal Power Supply...

  • Page 113: Sample Line Integrity Option

    10.3 Sample Line Integrity Option Selecting ENABLE 1=Y enables the line check diagnostic. Once enabled, the Model CM4 establishes a baseline value for each sample The Sample Line Integrity Option is enabled as a factory setting. The line. It does this (with the pump off ) by waiting 20 seconds and then instrument must have the appropriate and correct sensing hardware taking 10 zero-readings on each of the four sample points.

  • Page 114: Specifications

    CM4 Four-Point Continuous Monitor A Specifications CM4 Technical Manual...

  • Page 115: A.1 Introduction

    0235-1072, 100 per pack) should be replaced every 30 days. Ammonia Filters have an arrow on the side of the filter pointing in the direction COCl Phosgene of airflow toward the CM4 system. Hydrazine Filter Part Number Recommended Replacement Hydrogen Sulfide...

  • Page 116: A.3 General Specifications

    CM4 Four-Point Continuous Monitor 50 ft. (15m) maximum. Filter Filter Filter Symbol Name Type A Type B Type C Output requirements are: Boron Trifluoride • 4-20 mA analog 100-800 ohms Fluorine • Relay output contacts: Maximum: 127 VAC or 24 VDC @ 2 amps...

  • Page 117: A.4 Transport Times

    Operating Temperature: 50 - 104 °F (10-40 °C) • Humidity: 20-80% RH A.4 Transport Times Table A-2 shows the time required for samples to move from the sampling point to the CM4 for various lengths of sample lines. Tubing Length Time 20 feet (6 meters) 2 seconds...
  • Page 118 CM4 Four-Point Continuous Monitor B Fault Listing CM4 Technical Manual...

  • Page 119: B.1 Fault Codes

    CM4 Four-Point Continuous Monitor B.1 Fault Codes Table B-1 lists the CM4 fault codes with possible cause(s) and corrective action(s). Beeping Yellow Fault Relay Description Possible Cause Corrective Action Audio Status Activated Alarm LEDs No Points Enabled Programming Error Enable Point in SET-UP...
  • Page 120 FAULT boards Solid (RY10) Call Local Service Agent Voltage Fail PTx Ribbon cable unplugged Check cable from CM4 to customer I/O module Power Supply problem Call Local Service Agent FAULT Solid (RY10) External short-circuit on 24 VDC Correct short and replace fuse (F15) on customer I/O board Table B-1: CM4 Fault Listings (cont’d)
  • Page 121 Clean card and repeat Verification Clean Optics (Section 9.5) None Pos Pressure PTx Flow detected with pump off. Possibly Point valve option should be installed FAULT induced by positive pressure at sample Solid (RY10) point Table B-1: CM4 Fault Listings (cont’d) CM4 Technical Manual...
  • Page 122 Print mode set to continuous Change printer format to draft mode MAINT (RY8) Print mode set to “letter quality” Gas Table Error Invalid gas table stored in EEPROM Call Local Service Agent FAULT (RY10) Table B-1: CM4 Fault Listings (cont’d) CM4 Technical Manual...
  • Page 123 Verify integrity of sample line MAINT Solid (RY8) Replace sample line Chemcassette Expired Replace Chemcassette ® Chemcassette past expiration date ® ® MAINT (continues monitoring - no accuracy (RY8) guarantee) (See Table 8-2) Table B-1: CM4 Fault Listings (cont’d) CM4 Technical Manual...
  • Page 124 (stops ® FAULT ® Solid (RY10) monitoring) (See Table 8-2) Chemcassette Very Stale Replace Chemcassette ® Chemcassette past “out-of-bag” expiration ® FAULT ® Solid date (stops monitoring) (See Table 8-2) (RY10) Table B-1: CM4 Fault Listings (cont’d) CM4 Technical Manual...

  • Page 125: B.2 Leak Check Procedure

    NOTE: Vacuum Items required for performing a Leak Check should be available at most installation sites. Contact Honeywell Analytics service department for assistance in specifying or supplying parts needed. Instructions 1. Press PROGRAM to exit Monitor Mode.
  • Page 126 CM4 Four-Point Continuous Monitor CAUTION Make sure end of line filters are in place where recommended. NOTE: If a leak is detected, the sample line can be exchanged for a plug isolating the problem to the tubing, unit or connection.
  • Page 127 CM4 Four-Point Continuous Monitor Figure B-2: CM4 Flow Diagram Legend 1 Point shut-off valve/solenoid (optional) 6 Flow adjust 11 Pump 2 Sample manifold 7 Tape advance solenoid 12 Fast loop manifold 8 Acid scrubber filter 13 Particulate filter fitting 3 Vacuum transducer...
  • Page 128 CM4 Four-Point Continuous Monitor PYRO PYRO PYRO PYRO Figure B-3: CM4-P Flow Diagram Legend 11 Acid scrubber filter 1 Point shut-off valve/solenoid (optional) 6 Vacuum transducer 2 Particulate filter 7 Micro tube 12 Fast loop manifold 3 Freon filter 8 Optics block...
  • Page 129 CM4 Four-Point Continuous Monitor C Chemcassette Detectable ® Gases CM4 Technical Manual...
  • Page 130 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 3-49.9 ppm Ammonia II...
  • Page 131 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 0.5-1.9 ppb Arsine XP 2-4.9 ppb...
  • Page 132 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 0.05-0.24 ppm Chlorine XP4 0.5 ppm 0.05 ppm 0.05 ppm 0.5 ppm...
  • Page 133 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 0.4-2.4 ppm 2.5-4.9 ppm Dimethyl Amine 5.0 ppm 0.4 ppm 0.3 ppm...
  • Page 134 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 100-149 ppb 150-199 ppb...
  • Page 135 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 0.3-1.9 ppm Hydrogen Bromide XP4 2 ppm 0.3 ppm 0.2 ppm...
  • Page 136 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 1-2.4 ppm Hydrogen Cyanide 4.7 ppm...
  • Page 137 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 0.4-0.9 ppm Hydrogen Fluoride XP4 1-3.9 ppm...
  • Page 138 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 10-99 ppb Hydrogen Sulfide...
  • Page 139 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line Hydrogen Sulfide XP4 1-4.9 ppm...
  • Page 140 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 10-49 ppb 50-99 ppb...
  • Page 141 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line Phosphine XP4 5-3000 ppb...
  • Page 142 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 15-49 ppb 50-99 ppb...
  • Page 143 CM4 Four-Point Continuous Monitor Time to 1 TLV Initial Default Default Alarm @ 2 TLV Analysis Chemcassette Gas Name Alarm Alarm Range Alarm Setting Concentration Period Part Number Level 1 Level 2 10 Foot Sample (seconds) Line 0.3-0.5 ppm <30 sec 0.6-1.19 ppm...
  • Page 144 CM4 Four-Point Continuous Monitor D Printer Options CM4 Technical Manual...

  • Page 145: D.1 Overview

    The desktop printer has a pre-installed RS-232C adapter for serial settings, and set up for the CM4 printer options. An optional printer can print data for up to nine CM4 monitors. The available printers are interface. Also included with the option is the adapter cable (25 pin to...

  • Page 146: D.2 Jumpers

    CM4 monitor to printer or multiple CM4 monitor to printer share box applications. For single CM4 monitors connected directly to the printer, jumpers C, D, E, and F are used. For multiple CM4 monitors, jumpers A, B, G, and H are used, as shown below: 874270 Serial Communications Interface Board.

  • Page 147: D.3 Cabling

    D.3.1 EMC Considerations Stranded wire Provides the greatest surface area. MDA The CM4 has been designed to comply with applicable EMC standards Scientific product testing uses >90% braid with foil at the time of manufacture. The design includes filtering, shielding, and (around the bundle);...

  • Page 148: D.3.2 Cabling Diagrams

    CM4 Four-Point Continuous Monitor D.3.2 Cabling Diagrams COM2 Monitor The following diagrams show the cabling configurations for single and multiple CM4 monitors connecting to one of the printer options. The COM2 cabling is identical for both desktop and rack mount installations. Monitor CAUTION...
  • Page 149 Printer Share Box and Printer. With these racks, only a 120 VAC share box (i.e. P/N 1874-0007) Cables For applications requiring a 50 ft. cable between the CM4 monitor and should be used. the Printer Share Box, order cables separately (P/N 1874-0031, 9-pin...

  • Page 150: D.4 Instructions And Checklist

    2. Press PROGRAM to exit Monitor Mode. 3. From the 3 - SET-UP MODE, choose the subfunction 3 - If your model CM4 was ordered with a serial printer interface, observe OUTPUT OPTIONS, then select 2 - PRINTER PORT. the following instructions to ensure the option(s) are installed, properly cabled, and enabled for printing.
  • Page 151 The display reads: monitor. SELECT REPORT Select the Printer Format: The CM4 monitor can send reports to a printer in three different 1=CONT 2=SUM 3=COMP formats: The cursor flashes over the current set-up selection. 3. Choose the type of report desired. Use the numeric keys to •...

  • Page 152: D.5 Other Applications

    The serial printer interface is designed for unidirectional communication Applications from a CM4 monitor to a single printer or other remote device. It is from a CM4 monitor to a single printer or other remote device. It is possible, therefore, that your application for this interface requires...
  • Page 153 P/N 1874-0005 Rack Mount Cable Customer-supplied; refer to the EMC Considerations section on page D-2. Use the connector cable pin-out configuration shown for RS-422 applications. Figure D-6: Serial Interface, Single CM4, Single Printer up to 4000 ft. distance. CM4 Technical Manual D-10...
  • Page 154 CM4 Four-Point Continuous Monitor E Serial Communications Protocol CM4 Technical Manual...

  • Page 155: E.1 Introduction

    CM4 Four-Point Continuous Monitor E.1 Introduction E.1.2 Communication Port Access to the CM4 protocol is through the COM port. This port is E.1.1 Overview a DB-9 female connector. This port is designed for bidirectional The CM4 serial communications protocol was designed and developed communications between the CM4 instrument and your equipment.

  • Page 156: E.1.3 Set Up Procedure

    CM4 Four-Point Continuous Monitor E.1.3 Set up Procedure Every slave on a network must have a unique address from 1 to 255. If only one slave is present, this value may remain at 1. After After the networking cabling has been connected to the slave, the entering a unique number, press <ENTER>.

  • Page 157: Checksum (Check Character)

    CM4 monitor. with each other. Every packet sent by the CM4 instrument also contains an address, a Just as all words are not the same length (number of letters), packets length, a command and its associated parameters, and a checksum.

  • Page 158: E.2 Protocol Packet Definition

    Size: 1 byte E.2.1 Packet Format The length of the total packet from start code to checksum. Two similar protocols are supported by CM4 software. The original Command protocol with a minimum packet length of five bytes is included for Size: 1 byte compatibility with previous software.

  • Page 159: E.2.2 Generic Data Formats

    CM4 Four-Point Continuous Monitor E.2.2 Generic Data Formats place is located: 000 = no decimal places Date Format 001 = 1 decimal place Size: 2 bytes 010 = 2 decimal places Year: (7 bits) 011 = 3 decimal places Month: (4 bits)

  • Page 160: E.3 Protocol Command Definition

    Command packet to instrument: Command Code (0x30) - 1 byte Response packet from instrument: Command Code (0x30) - 1 byte CM4 Date - 2 bytes CM4 Time - 2 bytes Serial # - 2 bytes, product code 851 is assumed.

  • Page 161: Get Unit Status - 0X31

    Response packet from instrument: 0x02 = Point 2 enabled Command Code (0x31) - 1 byte 0x04 = Point 3 enabled CM4 Date - 2 bytes 0x08 = Point 4 enabled CM4 Time - 2 bytes bit 13: Relay state General Status - 2 bytes...
  • Page 162 CM4 Four-Point Continuous Monitor bits 2-3: CSI for point 2 0x10 = low Chemcassette tape bits 4-5: CSI for point 3 0x20 = Maint. Relay bits 6-7: CSI for point 4 0x40 = Instr. Fault Relay The CSI expresses the concentration relative to the alarm levels according to the following enumeration: 0.0 == concentration...

  • Page 163: Get Idle Time - 0X32

    Response packet from instrument: Command Code (0x34) - 1 byte Command packet to instrument: CM4 Date - 2 bytes Command Code (0x32) - 1 byte CM4 Time - 2 bytes Response packet from instrument: Last Power Down Date - 2 bytes...

  • Page 164: Get Point Configuration - 0X35

    Command Code (0x35) - 1 byte (alarm data, up to 16 possible) CM4 Date - 2 bytes CM4 Date of Alarm - 2 bytes CM4 Time - 2 bytes CM4 Time of Alarm - 2 bytes Point Status Flag - 1 byte Gas Abbr.

  • Page 165: Get Current Point Status - 0X37

    TWA time 3 - 2 bytes CM4 Date - 2 bytes Status - 1 byte CM4 Time - 2 bytes (If point is Disabled/Invalid/locked out, fill 0x00 = Time read with zeroes) MDA Gas Abbr. - 6 bytes (not null terminated)

  • Page 166: Get The Number Of Gas Tables Available - 0X3A

    Get Gas Table Data - 0x3C Response packet: This command allows you to view individual gas tables that are Command Code (0x3A) - 1 byte CM4 Date - 2 bytes contained within the system. CM4 Time - 2 bytes Command packet to instrument:...

  • Page 167: Get Fault History - 0X3D

    CM4 Four-Point Continuous Monitor Get Fault History - 0x3D 1 = instrument fault -- the CM4’s ability to monitor is compromised. This command will query the unit for the latest fault(s). There can be Get K-Factor - 0x3E as many as four and as few as zero faults. General system faults are indicated by bit 0 of the point status byte.

  • Page 168: Get Pyrolyzer Temperatures - 0X42

    Celsius the slave’s internal temperature. This is applies is set by the user to indicate how often the filters should be changed. A to a model CM4-P ONLY. maintenance fault will be issued when the filters are this old. The valid range is 30 to 365 days.

  • Page 169: Get Floating Status - 0X45

    01: alarm level 1 active Response from Slave: 10: alarm level 2 active Command code (0x45) - 1 byte (End of Point Structure) CM4 date - 2 bytes Total size is 34 bytes CM4 time - 2 bytes Example Status - 1 byte...

  • Page 170: Get One Alarm - 0X47

    Get One Alarm - 0x47 This packet returns the oldest unread entry from the alarm history. It These are the commands and responses that the CM4 system will duplicates the functionality of packet 0x36 in a form that some masters support for remote control and configuration.

  • Page 171: Reset Fault Or Alarm - 0X51

    Flag - 1 byte The old key code must match the code currently programmed into the bits 0-4: Reset selection CM4 monitor for this command to succeed in changing the code. 0x01 = Point 1 alarms Command packet to instrument:...

  • Page 172: Lock Keyboard - 0X53

    Keypad Status -1 byte Response packet from instrument: bit 0: Lock or unlock keypad Command Code (0x54) - 1 byte 0 = Unlocked CM4 Date - 2 bytes 1 = Locked CM4 Time -2 bytes bits 1-7: Undefined Status - 1 byte...

  • Page 173: Program Chemcassette Counter - 0X56

    3-5: Printer baud rate Response packet from instrument: 000 = 1200 Command Code (0x56) - 1 byte 001 = 2400 CM4 Date - 2 bytes 010 = 4800 CM4 Time -2 bytes 011 = 9600 Return Status - 1 byte...

  • Page 174: Set Point Enable/Disable – 0X58

    CM4 Four-Point Continuous Monitor Set Point Enable/Disable – 0x58 Set Point Configuration - 0x59 This command enables or disables points on the CM4 monitor. This command configures an individual point. The point can be configured even if it is disabled.

  • Page 175: Set Twa Time - 0X5A

    Command Code (0x5A) - 1 byte Command packet to instrument: CM4 Date -2 bytes Command Code (0x5C) - 1 byte CM4 Time - 2 bytes Idle Time - 1 byte (0 disabled, 1-45 mins) Status - 1 byte Response packet from instrument:...

  • Page 176: Set Date Format - 0X5D

    This command changes the current date format on the display date. Use this feature to synchronize the time and date between the and printer outputs only. It does not change the date format for remote equipment and multiple CM4 monitors. communication. Command packet to instrument:...

  • Page 177: Set Relay State - 0X5F

    Command Code (0x60) - 1 byte Command packet to instrument: CM4 Date: - 2 bytes Command Code (0x5F) - 1 byte CM4 Time - 2 bytes Relay Flags - 1 byte...

  • Page 178: Save Current Configuration - 0X62

    This command saves a backup copy of the current configuration to This command allows a master to set the minimum window time and nonvolatile memory in the CM4 monitor. This configuration can be the monitor relay response bits on a slave. Please see packet 0x69, restored using the Restore Configuration command.

  • Page 179: Set Filter - 0X66

    During periods when the tape is saturated but Internal filter lifetime (days) - 2 bytes prevented from advancing, the CM4 will continue to report the most External filter lifetimes (days) - 2 bytes recent concentration reading. Unfortunately it will not be able to detect...

  • Page 180: E.5 Operation

    40 00 01 20 31 24 A6 47 31 5E C1 02 00 00 00 00 Your CM4 instrument will accept and process commands sent to it 00 FF FF FF FF 00 B9 00 A5 00 A4 00 CD 00 00 40 from your equipment.
  • Page 181 CM4 Four-Point Continuous Monitor Master 40 01 00 06 45 74 Master 40 01 05 32 88 Slave 40 00 01 27 45 24 A6 47 45 09 00 00 00 00 00 BA Slave 40 00 0B 32 22 A6 43 FA 2D 00 51...
  • Page 182 CM4 Four-Point Continuous Monitor Master 40 01 05 38 82 Master 40 01 0A 52 01 04 57 00 00 07 Slave 40 00 10 38 22 A6 44 03 00 00 40 00 80 00 00 A9 Slave 40 00 0A 52 22 A6 44 8E 00 CA...
  • Page 183 CM4 Four-Point Continuous Monitor Master 40 01 06 5D 00 5C Slave 40 00 0A 5D 22 A6 44 BC 00 91 Master 40 01 09 5E 22 A6 44 67 E5 Slave 40 00 0A 5E 22 A6 44 35 00 17...

  • Page 184: E.7 Serial Device Applications

    Monitor The serial interface is designed for unidirectional communication from RS-422 Monitor a CM4 monitor to a single printer or other remote device. It is possible, RS-422 therefore, that the application for this interface requires connection to a Monitor Computer with multiple remote device other than the printer options described in this appendix.
  • Page 185 Computer Port Customer-supplied; check user device for compatibility before ordering. Cable User-supplied. Refer to diagram for pinout configuration. Drop distance between the CM4 and the daisy-chain cable should be as short as possible (less than three feet). Refer to EMC Considerations section on page D-2.

  • Page 186: E.7.1 Impedance Matching

    Last Figure E-5: Configuration showing Computer in the middle of a Daisy-Chain The CM4 unit’s impedance termination resistor is located on the RS-485 interface as shown below. The resistor plugs into sockets on the interface board for easy removal or insertion; there is no soldering required.
  • Page 187 CM4 Four-Point Continuous Monitor E.8 Glossary Protocol: The manner in which data is transferred and the format used for the transfer. CM4 protocol refers to the packets of transferred data The following terms are used in this manual: the CM4 instrument recognizes.
  • Page 188 CM4 Four-Point Continuous Monitor F Installation Drawing CM4 Technical Manual...
  • Page 189 CM4 Four-Point Continuous Monitor CM4 Technical Manual...
  • Page 190 CM4 Four-Point Continuous Monitor G LonWorks Protocol ® CM4 Technical Manual...

  • Page 191: G.2 Enabling Lonworks

    Free Topology Twisted Pair Transceiver Peer-t-peer I/O 64 Nodes per Channel 500 meters maximum cable length per channel 3 meters maximum stub length (the distance between junction box and Model CM4) Service Pushbutton Access Termination Figure G-2. Service Button and LED Location Node The pushbutton can be activated with a straightened paperclip.

  • Page 192: G.2.2 Operation

    NOT AVAILABLE will appear if the software V2.07 - V2.09 LON ID=000265664600 is installed and the CM4 unit was originally purchased without any network communication option. If the NOT AVAILABLE message The neuron ID above may not be displayed if the interface’s state is appears, contact Honeywell Analytics for assistance in enabling changed to “unconfigured”...

  • Page 193: G.3 Lonworks Retrofit

    This bag contains a bracket to mount the LonWorks interface on either and Wall Mount Mount Mount table or wall mount units. The existing bracket in the Model CM4 does CM4 (S/N < 5000) not have the necessary holes, and therefore must be replaced for CM4 (S/N > 5000) LonWorks installations.

  • Page 194: G.3.2 Installation

    Bag 6: Bracket to Mount Connectors • Remove the customer I/O panel. Some Model CM4 and CM4-P units have a bracket similar to the one • Remove the relay PCB from the customer I/O panel. in this kit, except it has an additional flange opposite the connectors.
  • Page 195 • Install the self-adhering label (Bag 7) directly onto the mounting standoffs. bracket. • Mount the bracket onto the CM4 unit. Insulator slides under interface board • Install the LonWorks interface on the bracket and secure it using the screws and washers provided (Bag 7).

  • Page 196: G.4 Wiring

    If you are installing or replacing the ribbon cable (Bag 4) from the Belden 8471 cable is currently recommended. For complete wiring LonWorks interface to the Model CM4, connect the cable to J9 on the and cabling information for LonWorks networks, refer to Echelon®...
  • Page 197 Nvi00Request and SNVT ppm f GasMonitorPt1 mandatory optional Nvo00Status convey a great deal of information between the CM4 and manufacturer-defined nvo01Flow a master computer about alarm levels, fault status, and point status. long nvo00AlmL Nvo00FaultS identifies which fault occurred to a master computer.
  • Page 198 Node 0 interpretation Nodes 1-4 interpretation faults. Refer to Table 1 for a list of implemented requests. Additionally, object_id (16 bits) nvo00Status conveys if the CM4/CM4-P is in or out of monitor, if a invalid_id object_id >4 object_id >4 point is enabled or disabled, and if faults or alarms are active. Refer...
  • Page 199 Nvo0xFlow reports the sample flow for each point x. This is in cc/ minute as a 16-bit integer. Note that this number is rarely needed as the CM4 checks for low flow internally. The frequency of data transmission varies according to the value of data contained in order to conserve network bandwidth while providing quick notification of problems.

  • Page 200: Warranty Statement

    CM4 Four-Point Continuous Monitor H Warranty Statement CM4 Technical Manual...
  • Page 201 12 months only be accepted if a proof of purchase is submitted and all conditions from the date of first turn-on or 18 months from delivery from Honeywell obtained within this Warranty are met.
  • Page 202 Wilstrasse 11-U11 This publication is not intended to form the basis of CH-8610 Uster a contract. Switzerland Tel: +41 (0)1 943 4300 Fax: +41 (0)1 943 4398 gasdetection@honeywell.com Technical Services ha.global.service@honeywell.com 971305 Revision 18 www.honeywell.com October 2011 ©2011 Honeywell Analytics...

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