Omron 3G3MV-PDRT2, User Manual

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Chapter 1
1-4
Functions and System Configuration
■
Applicable to Various System Configurations
Remote I/O communications and message communications are available as communications func-
tions. Normal control inputs are controlled by the remote I/O communications function. When neces-
sary, the message communications function is used to monitor each Inverter. It is possible to control
the selection of either the communications control input or local control input.
Note When connecting the DeviceNet Communications Unit/Card of the Inverter, use DCA1-5C10
Thin Cables and branch them from the T-branch Tap.
■ System Overview
Master Unit
CS1W-DRM21(-V1)
CJ1W-DRM21
C200HW-DRM21-V1
CVM1-DRM21-V1
Run
Forward
Reverse
Stop
Switch
Motor
Message communications function
Remote I/O function
Output (PLC to Inverter)
n
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Rotational speed reference rightmost bytes
Rotational speed reference leftmost bytes
Net.Ref. Net.Ctrl. Reset 0
1
2
3
n+1
Input (Inverter to PLC)
CMND(490)
Reading Inverter output
current
3G3MV, 3G3RV, 3G3PV,
or 3G3FV Inverter
Right-
most
Right-
most
Left-
most
Left-
most
Reverse/
Stop
Forward/
Stop 3G3MV-PDRT2 DeviceNet
Communications Unit
(For 3G3MV Inverters)
3G3RV-PDRT2
DeviceNet Communications
Card
(For 3G3RV, 3G3PV, and
3G3FV Inverters)
Note: T-branch wiring using
Thin Cables
Power
supply
Selection of either the communications control
input or local control input is possible using
Net.Ctrl./Net.Ref.