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Summary of Contents for Vacon CX Series
- Page 1 VACON CX/CXL/CXS FREQUENCY CONVERTERS Modbus Fieldbus Option Board USER’S MANUAL Subject to changes without notice F O R S M O O T H C O N T R O L...
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Page 2: Table Of Contents
Monitoring variables ........................ 17 7.3.3 Active Fault Code ........................18 7.3.4 Parameter Write and Read ...................... 19 CONNECTIONS (small Modbus Board for Vacon CXS, Vacon CX211OPT)........... 20 7.4.1 Board layout .......................... 20 7.4.2 Modbus connections....................... 20 Installation of CX211OPT in Vacon CXS drives................... 21... -
Page 3: General
________________________________________________________________________________________ GENERAL Vacon frequency converters can be connected to the Modbus by using the fieldbus board. The converter can then be controlled, monitored and programmed from the Host system. The used I/O can be also extended with the Fieldbus board: •... -
Page 4: Specifications
VACON CX Modbus user’s manual Page ________________________________________________________________________________________ SPECIFICATIONS Modbus - Interface 9-pin DSUB connector (female) connections Transfer method RS-485, Half duplex Transfer cable Twisted pair (1 pair and shield) Electrical isolation 500 V DC 24 V: “0” ≤10 V, “1” ≥18 V, R... -
Page 5: Modbus
VACON CX Modbus user’s manual Page ________________________________________________________________________________________ MODBUS General The MODBUS protocol is an industrial communications and distributed control system to integrate PLCs, computers, terminals, and other monitoring, sensing, and control devices. MODBUS is a Master-Slave communications protocol. The Master controls all serial activity by selectively polling one or more slave devices. -
Page 6: Modbus Frames
Meaning of Fieldbus board READ COIL STATUS Read Control bits READ INPUT STATUS Read Status bits READ HOLDING REGISTER Read VACON parameter READ INPUT REGISTER Read VACON variable FORCE SINGLE COIL Write Control bits PRESET SINGLE REGISTER Write VACON parameter... -
Page 7: Exception Responses
VACON CX Modbus user’s manual Page ________________________________________________________________________________________ Exception responses If the slave receives the query without a communication error, but cannot handle it, the slave will return an exception response informing the master of the nature of the error. The exception response codes are listed below. -
Page 8: Installation
VACON CX Modbus user’s manual Page ________________________________________________________________________________________ INSTALLATION NOTE! These instructions apply if you have received the Modbus board as an accessory. Otherwise the board has already been installed for you at the factory. Before starting the commissioning, carefully read the safety instructions from the "User's manual CX/CXL/CXS frequency converter"... -
Page 9: Vacon Cx Modbus User's Manual
VACON CX Modbus user’s manual Page ________________________________________________________________________________________ Fieldbus board Figure 4-1. Fieldbus board installed on the control board ________________________________________________________________________________________ Vacon Oy Phone +358-201-2121 Fax: +358-201-212 205... -
Page 10: Connections
VACON CX Modbus user’s manual Page ________________________________________________________________________________________ CONNECTIONS Board layout Terminals: I/O - terminals Termistor input Encoder terminal Modbus terminal Extra terminal Line terminator (120Ω )ON/OFF Connector for cable Shield D-sub connector Figure 5-1. Fieldbus board Diagnostic LED: Supply Voltage, Green. -
Page 11: I/O-Control Connections
Termistor input motor termistor Figure 5-2. Control connections READY = ON, when the mains voltage has been applied and the VACON CX is ready to operate = ON, when the motor is running FAULT = ON, if a fault occurs... -
Page 12: Commissioning
3. Set to address 40000 value 3E8hex (frequency reference 10,00 Hz). message: 01 06 00 01 03 E8 D8 B4 4. The VACON CX shoud now be running and the output frequency shoud be 10,00 Hz. 5. Write to address 00000 value 0000hex (STOP). -
Page 13: Modbus-Vacon Cx Interface
MODBUS-VACON CX INTERFACE Features of Modbus-Vacon CX interface: • Direct control of Vacon CX ( e.g. Run, Stop, Direction, Speed reference, Fault reset) • Full access to all Vacon CX parameters • Monitor Vacon CX status (e.g. Output frequency, Output current, Fault code ..) •... -
Page 14: Function Code 4, Read Variables
VACON CX Modbus user’s manual Page ________________________________________________________________________________________ 7.1.4 Function code 4, Read Variables This function is used to read VACON CX variables. The transaction frames: Query: Slave Function Starting Starting Number of Number of CRC16 address code Address HI Address LO... - Page 15 VACON CX Modbus user’s manual Page ________________________________________________________________________________________ Slave Function Subfunction Subfunction Data HI Data LO CRC16 address code 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 2 bytes Subfunction codes: Echo The slave sends back the query message (loop back).
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Page 16: Vacon Control Interface
VACON CX Modbus user’s manual Page ________________________________________________________________________________________ VACON control interface Direct control of Vacon CX uses following function codes and addresses: Fieldbus Board VACON CX CONTROL Function code 5, Write Function code 1, Read Address: 00 00 RUN/STOP 00 01... -
Page 17: Vacon Parameters
VACON CX Modbus user’s manual Page ________________________________________________________________________________________ VACON parameters The Vacon variables and parameters can be read and written by using the following function codes and addresses: Modbus Address Modbus Register Function code Vacon Par/Var Access rights 40000 - 40099... -
Page 18: Active Fault Code
Modbus address Vacon variable 30100 Active fault code List and description of the fault codes are in USER’S MANUAL VACON CX/CXL/CXS Example 1: Read active fault code. Response: fault code 1 = Overcurrent Query:... -
Page 19: Parameter Write And Read
Numbering of the parameter as well as parameter ranges and steps can be found in the application manual in question. The parameter value should be given without decimals. Example 1: Write value 25 to Vacon parameter 3.2 Response is an echo of the query. Query:... -
Page 20: Connections (Small Modbus Board For Vacon Cxs, Vacon Cx211Opt)
Receive/Transmission data negative (A) DGND X5-5 Data Ground Table 7-2. Screw connector terminals Note! If Vacon is the last device then the bus termination must be set. Install the resistors to the screw terminal (see table 5-1) ________________________________________________________________________________________ Vacon Oy Phone +358-201-2121... -
Page 21: Installation Of Cx211Opt In Vacon Cxs Drives
Modbus user’s manual Page ________________________________________________________________________________________ Installation of CX211OPT in Vacon CXS drives NOTE: The option boards on the pictures may not look exactly the same as the one you have purchased. These instructions are, still, applicable. Remove the control panel and the panel base. - Page 22 VACON CX Modbus user’s manual Page ________________________________________________________________________________________ Connect the power cable (5) to terminal X9 on the option board. Attach the control panel base with four screws. Check the connections. Remove all foreign objects from inside the frequency drive. Put the control panel and the frequency drive cover back to their places.
- Page 23 VACON OY PL 25 Runsorintie 7 65381 VAASA Puh: 0201 2121 Fax: 0201-212 205 Päivystys: 040-8371 150 E-mail: vacon@vacon.com http://www.vacon.com...
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