Related Manuals for Lenze SMD Series
Summary of Contents for Lenze SMD Series
- Page 1 Series Drives Modbus Communications Reference Guide Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com...
- Page 2 About These Instructions This documentation applies to the use of an smd Series Variable Frequency Drive in a Modbus Network and should be used in conjunction with the smd Series Operating Instructions (Document SL03) that shipped with the drive. These documents should be read in their entirety as they contain important technical data and describe the installation and operation of the drive.
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Page 3: Table Of Contents
Contents 1 Safety Information ......................1 Warnings, Cautions and Notes ................1 1.1.1 General ....................1 1.1.2 Application ....................1 1.1.3 Installation ....................1 1.1.4 Electrical Connection ................2 1.1.5 Operation ....................2 Reference and Links .....................2 2 Introduction ........................3 RS485 Details .......................3 Electrical Installation .....................3 2.2.1 Cable Type ....................3 2.2.2 Connections and Shielding ...............3... - Page 4 Contents 5 smd Drive Control Registers ....................12 Abbreviations ......................13 Drive Control - Register #1..................13 Drive Hardware Configuration - Register #22 ............14 Drive Status - Registers #24-29 ................15 5.4.1 Reading Register #24 ................15 5.4.2 Operational Status - Register #26 .............16 5.4.3 Actual Rotational Direction - Registers #24 &...
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Page 5: Safety Information
Warnings, Cautions and Notes 1.1.1 General Some parts of Lenze controllers (frequency inverters, servo inverters, DC controllers) can be live, moving and rotating. Some surfaces can be hot. Non-authorized removal of the required cover, inappropriate use, and incorrect installation or operation creates the risk of severe injury to personnel or damage to equipment. -
Page 6: Electrical Connection
Safety Information 1.1.4 Electrical Connection When working on live drive controllers, applicable national regulations for the prevention of accidents (e.g. VBG 4) must be observed. The electrical installation must be carried out in accordance with the appropriate regulations (e.g. cable cross-sections, fuses, PE connection). Additional information can be obtained from the regulatory documentation. -
Page 7: Introduction
This document defines the specifics required for Modbus serial communication with a Lenze-AC Tech standard smd Series drive for control, status monitoring, and programming parameters. A familiarity with normal drive capabilities and operations is assumed. If this is not the case, refer to the smd Series Operating Instructions (SL03) for more information. -
Page 8: Network Termination
Introduction 2.2.3 Network Termination For an RS-485 network it is essential to install the specified termination resistors (120W), i.e. one at both ends of a network segment. Failure to do so will result in signals being reflected back along the cable which will cause data corruption. - Page 9 Introduction D. The function codes supported by the smd drives are: 03 Read Holding Register (4X references). In general we can read only one register at a time. However, there are a few limited exceptions. Exception One: Register #24 (Modbus Register #25) Drive Status, can also be read as a group of 6 words. Exception Two: Parameter C99 (Software Version) is a 4-word read.
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Page 10: Universal Registers
Introduction Universal Registers Lenze-AC Tech manufactures several drive families. Currently the QC, MC, MCH, SC, TC, smd , Tmd and SMV Series drives support Modbus based communications. Since each drive family has different parameters and size ranges, the parameter (register) definitions are in many cases quite different. In order to facilitate communication in a network with a mix of drive types, certain Lenze-AC Tech Register locations have been made universal among Lenze-AC Tech drives. -
Page 11: Data Representation - Internal And External
Hz but the drive may display that speed in whole Hz by dropping the tenth using programmed conversion factors. Table 3 lists examples of the internal units used on the smd series. Table 3: smd Series Internal Units... -
Page 12: Smd Drive Setup & Operation
1 in order to avoid duplicate address conflicts when replacing devices. Serial Communications Parameter Lenze-AC Tech drives have a Serial Communications Parameter that governs the operation of the serial link. On smd drives this is c25, Serial Baud Rate {Register #95 (PC400) or #103 (PC507)}. Parameter C01 Control Source Setpoint must first be set to a value of 8-11. -
Page 13: Watchdog Timer
Drive Setup & Operation Watchdog Timer The smd drive is equipped with a Serial Link “Watchdog Timer”. If the Modbus Master wishes to control the drive (start, stop, forward, reverse, etc.) it must first “Unlock Controls” (section 4.4). If the Watchdog Timer is enabled and controls have been unlocked, the Master MUST PERIODICALLY COMMUNICATE with the drive or the timer will timeout. -
Page 14: Unlocking & Locking Controls
C94, then in addition to Register #1(Drive Control), writing to all other writeable registers is enabled (e.g.: parameter C37 -- Preset Speed #1). The factory default password for smd series drives is 0. • Once Register #48 (Unlock Controls) has been written, Controls are unlocked until Register#1 bit 1 (Lock Bit) has been written, Parameter C01 is changed to a value different than 10 or 11, the drive is powered down or a serial timeout occurs. -
Page 15: Normal Control Operation Sequence
Drive Setup & Operation Normal Control Operation Sequence 1. Power up drive. 2. Set parameter C01 (Control Source Setpoint) to selection 10 or 11. 3. Close terminal 28. 4. Unlock control by writing a zero to Register #48. 5. Control drive operation via various commands to Register #1 (Start, Stop, Reverse direction, etc.). 6. -
Page 16: Smd Drive Control Registers
Drive Control & Communication smd Drive Control Registers Table 6 describes the smd Drive Control Registers in ascending order of smd Register #. The HEX representation is given in parenthesis next to the smd Register # in the left-most column. Table 6: smd Drive Control Registers [NOTE] REGISTER NAME... -
Page 17: Abbreviations
Drive Control & Communication Abbreviations Table 7 lists the abbreviations used in Table 6 smd Drive Control Registers: Table 7: Abbreviations Abbreviation Description Read Write Response Slave Address (typically 01 through F7 hex) CRCH Cyclic Redundancy Check High byte CRCL Cyclic Redundancy Check Low byte Data High byte Data Low byte... -
Page 18: Drive Hardware Configuration - Register #22
• The SMV Series drives return 72 (48H) NOTE 3 - Drive Size On smd series drives this register always read zero Drive Hardware Configuration - Register #22 Table 9 lists the smd Drive Hardware Configuration, Register #22. Bits 4 - 15 are not used at this time. -
Page 19: Drive Status - Registers #24-29
Drive Control & Communication Drive Status - Registers #24-29 5.4.1 Reading Register #24 When reading register #24, the group of words requested can be either 1 or 6. This is an exception to the rule of being able to read only one register at a time. If 6 words are requested at register #24, the following will be returned: Table 10: 6 Register read at #24 Parameter... -
Page 20: Operational Status - Register #26
Drive Control & Communication 5.4.2 Operational Status - Register #26 Table 11 lists the Operational Status (Register #24 byte D3L or Register #26 DL) Table 11: Operational Status Parameter FAULT LOCKOUT FAULT START PENDING STOP DC BRAKE RUN AT 0Hz ACCEL DECEL CURRENT LIMIT... -
Page 21: Speed Command Source - Registers #24 & 28
Drive Control & Communication 5.4.5 Speed Command Source - Registers #24 & 28 Table 14 lists the Speed Command Source (Register #24 byte D5H or Register #28 DH). Table 14: Speed Command Source Setting Source ANALOG FREQ. PRESET c40 PRESET 1 PRESET 2 PRESET 3 MOP SPEED... -
Page 22: Commanded Rotational Direction - Registers #24 & 29
Drive Control & Communication 5.4.8 Commanded Rotational Direction - Registers #24 & 29 Table 17 lists the Commanded Rotational Direction (Register #24 byte D6L or Register #29 DL) Table 17: Commanded Rotational Direction Setting Direction FORWARD REVERSE Motor Volts - Register #30 Output Voltage to the motor expressed as a percentage of nominal drive voltage. -
Page 23: Smd Programming Parameters
Drive Control & Communication smd Programming Parameters Format NOTE - Attention Parameter list presented in Section 6.2 is valid only for smd parameter version 400 and 507. For revisions, refer to appropriate smd Manual. Abbreviations: (1byte) Drive Address (1-247) (1byte) Register Address CRCH Cyclic Redundancy Check High byte CRCL Cyclic Redundancy Check Low byte READING:... -
Page 24: Parameter List
Modbus 11 c40 Modbus Modbus 52 (34H) 52 (34H) Load Lenze setting 0 No action/loading complete 1 Load 50Hz Defaults 2 Load 60Hz Defaults 3 Load OEM Defaults 4 Translate compatible EPM NOTE: Drive must be in OFF or Inhibit state to change... - Page 25 Drive Control & Communication smd Register # Parameter Name Range of Adjustment Factory Modbus value (decimal value) Default (hexadecimal representation) PV400 PV507 57 (39H) 57 (39H) Configuration 0 Ready Relay Output 1 Fault 2 Motor is running 3 Motor is running - CW rotation 4 Motor is running - CCW rotation 5 Output frquency = 0Hz 6 Frequency setpoint reached...
- Page 26 Drive Control & Communication smd Register # Parameter Name Range of Adjustment Factory Modbus value (decimal value) Default (hexadecimal representation) PV400 PV507 74 (4AH) 75 (4BH) Fixed Setpoint 2 (JOG2) 0 - 9990 (0.0 - 999) 30.0 Hz 75 (4BH) 76 (4CH) Fixed Setpoint 3 (JOG3) 0 - 9990 (0.0 - 999)
- Page 27 Drive Control & Communication smd Register # Parameter Name Range of Adjustment Factory Modbus value (decimal value) Default (hexadecimal representation) PV400 PV507 95 (5FH) 103 (67H) LECOM Baud Rate 0 9600 bps (9600, 8, N, 2 if C01 = 8...11) 1 4800 bps (9600, 8, N, 1 if C01 = 8...11) 2 2400 bps (9600, 8, E, 1 if C01 = 8...11) 3 1200 bps (9600, 8, O, 1 if C01 = 8...11)
- Page 28 Drive Control & Communication NOTE 5 - smd - Fault History Parameters c61 (Present Fault), c62 (Last Fault) and c63 (Last but one Fault) provide the Fault History for the smd drive. Table 18 lists the fault codes. Table 18: Fault Codes - c61, c62 & c63 Code Fault Description Display...
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Page 29: Quick Start Instructions
3. The Modbus master needs to be set to use 9600 baud. No other baud rates are supported by the SMD drive. 4. The SMD series drive has the provision for a watchdog timer to monitor network communications to the drive. The drive’s timeout behavior is set using Parameter n22 and the timeout period is set using Parameter n23 as shown in Table 19. -
Page 30: Drive Control
Drive Control & Communication Drive Control 1. Please be advised that while the drive is under network control the local STOP circuit is always enabled. Input 28 needs to be asserted in order for the drive to start. If you will not be using start/stop simply jumper TB28 input to TB20. -
Page 31: Basic Drive Status
Drive Control & Communication Basic Drive Status AC Tech register 24 is a 6 word entity containing the drive’s status information. To read the entire status block use Modbus function code 3 with a length of 6 to read starting at Modbus register number 40025. The low byte of the third word in this block of data contains the operational status.
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