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DUNIWAY Stockroom Terranova 752A Instruction Manual

Dual ion pump
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Terranova® 752A
Dual Ion Pump Power Supply
Instructions Manual
Revision - 0817NC
©2017 Duniway Stockroom Corporation
TELEPHONE:
650-969-8811
TOLL-FREE (US/Canada):
800-446-8811
FAX:
650-965-0764
EMAIL:
info@duniway.com
WEB:
www.duniway.com
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Summary of Contents for DUNIWAY Stockroom Terranova 752A

  • Page 1 Terranova® 752A Dual Ion Pump Power Supply Instructions Manual Revision - 0817NC ©2017 Duniway Stockroom Corporation TELEPHONE: 650-969-8811 TOLL-FREE (US/Canada): 800-446-8811 FAX: 650-965-0764 EMAIL: info@duniway.com WEB: www.duniway.com 1 of 38...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ACCESSORIES INTRODUCTION INSTALLATION OPERATION Self-Test Setup Mode Disabling the Control Unit Speaker Power Loss Restart Restoring Default Values MODE OF OPERATION ION PUMP OPERATION Start Phase Normal Operation Cool-down Mode Shutdown Mode SET POINT OPERATION ANALOG OUTPUT SERIAL COMMUNICATION TROUBLESHOOTING INTERNAL DIP SWITCH SETUP...

  • Page 3: Specifications

    Specifications Operating Voltage Universal 100 V to 120 V AC @ 50 Hz to 60 Hz; 100 VA Open Circuit Voltage Operator Set ± 3500 V to ± 7500 V DC Polarity Positive (Default) / Negative Short Circuit Current Operator Set 50 mA maximum per channel High Voltage Output Options...

  • Page 4: Accessories

    Accessories Included Instruction manual (Online) One power cord Two replacement fuses One unterminated male 9-pin D-sub connector One unterminated male 15-pin D-sub connector One unterminated male 25-pin D-sub connector Required See Appendix 1 for a list of compatible ion pump cables (Sold separately) Optional RS232-TN751A...

  • Page 5: Introduction

    Introduction The Terranova® 752A Dual Ion Pump Power Supply is designed to independently start and operate two ion pumps from a number of manufacturers. With user-changeable high voltage polarity, the Terranova® 752A can operate either positive or negative pump element configurations.
  • Page 6 WARNING Use of cables other than those approved by Duniway Stockroom Corp. could lead to operation problems or safety hazards. Figure 2. Terranova® 752A back view To properly connect the Terranova® 752A to the ion pump(s): 1. Secure the ion pump cable end to the ion pump high voltage feedthrough(s) 2.
  • Page 7 Safety Interlock Feature A safety interlock or secondary ground sense circuit is incorporated into each channel of the Terranova® 752A to disable high voltage operation when open. The safety interlock circuit is completed via an external lead available on most Duniway ion pump cables. The external lead must properly connect the ion pump body to the respective GROUND SENSE stud of the control unit (see Figure 2) to complete the safety interlock circuit and enable high voltage operation.

  • Page 8: Operation

    Operation Self-Test The Terranova® 752A will perform a self-test at power ON. Each step is initiated by a BEEP sound in the following sequence: 1. All display segments become illuminated for CHANNEL 1 2. All LED indicators (except HV ON/OFF and HIGH VOLT INTERLOCK IS OPEN) become illuminated for CHANNEL 1 3.

  • Page 9: Disabling The Control Unit Speaker

    4. Press the SELECT button a fourth time to set or adjust the ion pump speed. Use the RAISE or LOWER button to increase or decrease the PUMP SIZE value shown on the CURRENT display. Pump speed range is from 0.1 L/s to 999 L/s. Default pumping speed is 20 L/s.

  • Page 10: Power Loss Restart

    Figure 3. DIP switch and JP9 jumper location Power Loss Restart The Terranova® 752A may be set to automatically restart high voltage operation after a power outage. If high voltage was enabled before the interruption, high voltage operation will commence – first on CHANNEL 1, then CHANNEL 2 – once power to the control unit is restored. The safety interlock circuit must remain closed throughout the entire process for a successful power loss restart.

  • Page 11: Restoring Default Values

    Restoring Default Values Restoring default parameters provides a starting point for control unit readjustment in the event measurements become unreliable. Each Terranova® 752A channel may be independently restored to default values. To restore default values: 1. Turn the unit OFF via the POWER switch 2.
  • Page 12 Mode DIP Switch S1-3 DIP Switch S1-4 Table 3. DIP Switch Mode Selection Mode 0: Standard Operation Terranova® 752A operation and parameter input may be conducted either via the front panel buttons or serial communication. Default mode of operation at time of shipment. Mode 1: Secondary Interlock Terranova®...

  • Page 13: Ion Pump Operation

    To access the special setup mode: 1. Turn the control unit OFF via the POWER button 2. Depress the SELECT button for CHANNEL 1 and restart the control unit via the POWER switch If successful, the HIGH VOLTAGE display for CHANNEL 1 will output the code SU. Soon after, the HIGH VOLTAGE displays will output the code OFF and SU for CHANNEL 1 and CHANNEL 2, respectively.
  • Page 14 Figure 4. Terranova® 752A Power vs. Current relationship Figure 5. Terranova® 752A Voltage vs. Current relationship However, if high voltage output does not appear to increase, the ion pump / vacuum system is still at too high of a pressure. User should terminate high voltage operation and further pump on the ion pump / vacuum system.

  • Page 15: Normal Operation

    Normal Operation Once the ion pump has been successfully started, Terranova® 752A operation is almost automatic. As shown in Figure 5, high voltage will approach the open circuit value (i.e. MAX VOLTAGE value) as current output approximate 0 µA. Current units will auto range during use as ion pump current increases or decreases.

  • Page 16: Shutdown Mode

    If a channel enters the Cool-down Mode, a BEEP will be emitted followed by the code CD1 to indicate the first of five OFF/ON states. During these cycles, high voltage operation is automatically disabled for five minutes (i.e. OFF period) and enabled for 10 minutes (i.e. ON period).
  • Page 17 in which S is the set point value in the selected pressure unit. For example, if the SET POINT is 1.0 * 10 Torr, the relay will activate once the pressure reading is less than or equal to 1.0 * 10 Torr and deactivate once the pressure reading is greater than or equal to 1.2 * 10 Torr.
  • Page 18 Function Output Description CHANNEL 1 SET POINT Relay Common See Set Point Operation CHANNEL 1 SET POINT Relay Normally closed (NC) See Set Point Operation CHANNEL 1 SET POINT Relay Sense +5 V See NOTES CHANNEL 2 SET POINT Relay Common See Set Point Operation CHANNEL 2 SET POINT Relay...

  • Page 19: Analog Output

    Analog Output The Terranova® 752A has analog output available for use as a secondary method to read the high voltage and current values shown on the HIGH VOLTAGE and CURRENT display, respectively, of each channel. The unit outputs a 0 V to 10 V signal for each type of analog output.

  • Page 20: Serial Communication

    Setting the Current Analog Scale A combination of two internal DIP switches, DIP Switch S1 and DIP Switch S3, are used to select the proper analog output for the CURRENT value of each channel. Although DIP Switch S1 and S3 have eight individual ON/OFF switches labeled S1-1 to S1-8, only DIP Switch S1-7, DIP Switch S1-8, and DIP Switch S3-7 are utilized.
  • Page 21 RS-232 Settings 9600 Baud No Parity 8 Bits 1 Stop Bit Full Duplex Table 9 shows the pin configuration for all three serial communication options. The Terranova® 752A must receive input in less than or equal to 500 ms; otherwise, transmission will be voided. For RS-232 serial communication, user will have to utilize either the Duniway cable RS232-TN751A or a user-supplied cable and a separate program, such as HyperTerminal, to send query or command characters and read output.
  • Page 22 The checksum value is a two-character value used to conduct checksums with external devices when DIP Switch S3-5 is ON. The comma mark (,) must be included in the query string if sending a checksum value. Although a checksum value is not necessary in a query string, the Terranova®...
  • Page 23 Command Characters The following input format is used by the Terranova® 752A to modify unit parameters or operate unit functions *[Hexadecimal Address][Command Character]:[Parameter Value][,(Checksum Value)]<cr> where the asterisk symbol (*) indicates the start of transmission, the colon symbol (:) tags the transmission as a command string, and the return character (<cr>) ends input/output transmission.
  • Page 24 Examples Serial communication: RS-232/422 Checksum value: Disabled *PS1:20.0<cr> CHANNEL 1 PUMP SIZE value: 20 L/s Output: OK:20.0,NN Serial communication: RS-485 Hexadecimal address: 05 *05PS2:20.0,00<cr> Checksum value: 00 CHANNEL 2 PUMP SIZE value: 20 L/s Output: 05,OK:20.0,NN NN is the two-character checksum value that is automatically calculated and output by the control unit Changing the Communication Standard The Terranova®...
  • Page 25 Changing the RS-485 Address The Terranova® 752A outputs the RS-485 address during the Self-Test as a decimal value from 0 to 255. However, the decimal address is input into the control unit as an 8-bit binary value from 00000000 to 1111111 via DIP Switch S2. The binary bits are determined via the eight individual ON (i.e.

  • Page 26: Troubleshooting

    Invert connections to T and R not respond serial I/O cable connector Set point relay contacts do Contacts are welded together Return to Duniway Stockroom not toggle due to excess current or transients TELEPHONE: 650-969-8811 TOLL-FREE (US/Canada): 800-446-8811...
  • Page 27 Error Code Description High voltage exceeded 8.00 kV Operation not allowed Attempted to change unit parameters via front panel while in Mode 2 Attempted to turn high voltage ON with safety interlock fault Attempted to turn high voltage ON via HIGH VOLTAGE ON/OFF button while in Mode 1 with secondary interlock fault Parameter at limit...

  • Page 28: Internal Dip Switch Setup

    Condition: Leakage current If a vacuum system is known to be in the ultra-high vacuum range but current reading is steady or fluctuating between ones of microamperes, the non-zero current reading may be due to leakage current. Leakage current can originate from either the ion pump and/or control unit. Leakage current from an ion pump can occur due to field emission from sharp points, edges, or flakes which develop after prolonged use.

  • Page 29: Changing High Voltage Polarity

    Figure 7. Hexadecimal code 0FC0 DIP switch setup For example, if the Terranova® 752A outputs the hexadecimal code 0FC0, this corresponds to 0000, 1111, 1100, and 0000 in binary notation, respectively. The binary notation, in turn, provides the individual switch positions as illustrated in Figure 7. Therefore, said switch positions provide the corresponding Terranova®...
  • Page 30 Figure 8. HV diode and jumper J2 positive high voltage position 8. Remove the HV diode 9. Locate jumper J2 of the respective channel. As shown in Figure 8, jumper J2 – identified by the dashed box – is next to the HV board heat sink. 10.
  • Page 31 14. Set respective DIP switch to the proper state Positive polarity: Negative polarity: DIP Switch S1-1 and DIP Switch S3-8 control the ± symbol on the HIGH VOLTAGE display for CHANNEL 1 and CHANNEL 2, respectively 15. Locate jumper JP8 for CHANNEL 1 or jumper JP13 for CHANNEL 2. As shown in Figure 9, user will need to disconnect and remove the ribbon cable –...

  • Page 32: Changing Fuses

    17. Re-install the 2-pin shunt jumper to the proper position – see Figure 10 Positive polarity: Connect PIN 1 and PIN 2 Negative polarity: Connect PIN 2 and PIN 3 Jumper JP8 activates the proper CHANNEL 1 high voltage polarity sense pin of the MISCELLANEOUS I/O and AUXILIARY I/O ports;...

  • Page 33: Legacy Terranova® 752

    Warranty Duniway Stockroom Corporation (“DSC”) warrants all Terranova® products to be free of defects in material and workmanship for a period of one year from the date of shipment. At our option, we will repair or replace products which prove to be defective during the warranty period.

  • Page 34: Declaration Of Conformity

    Declaration of Conformity Duniway Stockroom Corp. declares under its sole responsibility that the following products: Terranova® 751A Ion Pump Control Unit Terranova® 752A Dual Ion Pump Control Unit that display the CE mark to which this declaration relates are in conformity with the following...

  • Page 35: Appendix 1. Compatible Duniway Ion Pump Cables

    Appendix 1. Compatible Duniway Ion Pump Cables Description Part No. Ion pump cable with V & 10 connectors (10 ft.) V-110N-10 V-110N-FR Ion pump cable with V & FR connectors (10 ft.) Ion pump cable with S & 10 connectors (10 ft.) S-110N-10 S-110N-FR Ion pump cable with S &...

  • Page 36: Appendix 2. Notes On Terranova® Set Point Relays

    Appendix 2. Notes on Terranova® Set Point Relays Figure 1. Heavy Duty Type AZ5 relay voltage-current relationship The Heavy Duty Type AZ5 relay is used in the Terranova® 752A to control external functions. As shown in Figure 1, maximum current varies from 2 A at 30 V DC (60 V AC) to 0.4 A at 150 V DC (300 V AC) for resistive loads.
  • Page 37 Figure 2. Example of a “snubber” circuit To calculate the appropriate capacitor C in microfarads [µF] and resistor R in ohms [Ω] to use in the “snubber” circuit, Paktron Capacitors’ Quencharc® technical note suggests the following empirical equations �� �� = (1), and ��...
  • Page 38 From our Fremont, CA facility, we use only the best materials, construction and processing techniques to build and rebuild almost any ion pump. Duniway Stockroom offers a full complement of ion pump services and parts including but not limited to: •...

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