3-8 Installing the Drive
650 Series AC Drive
RS485/RS232 Communication Module
You can create a network of drives by linking a Master (PC/PLC) to one or more 650 drives
fitted with this module.
Plug this Communication Module on to the front of the 650 drive, replacing the keypad.
It converts signals from the host 650 drive into RS485 or RS232, and vice versa, so that
information can be shared between the Master and 650 drive(s).
Wiring is very simple - all connections are SELV (Safe Extra Low Voltage). Select to use
RS485 or RS232 by wiring to the appropriate terminal on the module.
Note: RS485 and RS232 terminals cannot be used simultaneously.
We recommend you ground the module to the system earth using the Functional Earth terminal.
RS485 Connections
RS232 Connections
master to single/multiple slave
master to single slave only
Tx
Rx
0V
9-Way or 25-Way
D-Type Connector
PC/PLC
9-Way / 25-Way
D-Type
PC/PLC
A
B
Scn
A
B
To PC/PLC
Chassis
650 Drive
with
Module
Connector
Functional
Earth
Drive
Master
PC/PLC
Drive Drive Drive
Master
PC/PLC
Wiring Specifications
RS485 Connections RS232 Connections
Network Type
2-Wire Shielded Twisted-Pair 3-Wire Un-Shielded Cable
Connections
A=RxA/TxA, B=RxB/TxB, Shield Rx, Tx, Ground (0V)
Signal Levels
To RS485 Standard To RS232 Standard
Receiver Input
Impedance
¼ Unit Load
3 kΩ minimum
7kΩ maximum
Maximum Cable Length
1200m (4000ft) 3 metres
Maximum Baud Rate
57.6kbaud 57.6kbaud
Maximum Number of
Units
32 including slaves and masters
2: 1 master and 1 slave
only
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