Mounting The Cqm1-Arm21; Connector - Omron CQM1-ARM21 Operation Manual

Mounting the CQM1-ARM21

2-1-4 Connector

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Caution

2-2 Mounting the CQM1-ARM21

Master Unit Installation
!
Caution
!
Caution
14
The Master Unit's terminal block can be removed from the Unit. To remove
the terminal block, unscrew the screws at the top and bottom of the terminal
block and pull it from the Unit. After wiring, attach the terminal block securely
with the retaining screws to the specified tightening torque (approx. 0.4 N).
Both ASI + terminals will be connected to each other via the CQM1-ARM21,
when the terminal block is attached to the unit. The same applies to the ASI -
terminals.
The CQM1-ARM21 does not supply power to the AS-Interface cable. A
separate AS-Interface power supply is required.
It is recommended to shut off the AS-Interface power supply to the Master
Unit if the PLC power is turned off for a longer period of time.
To use the Master Unit, connect it to a CQM1 PLC just like other Units such
as I/O Units. Refer to the PLC's Operation Manual for details on mounting
Units to the PLC or installing the PLC in a control panel.
A label is stuck to the Masters and Slaves to prevent pieces of wire from
entering the Units. Install and wire the Units with the labels in place. Stray
strands of wire could cause malfunctions. Be sure to remove the label after
installation and wiring to facilitate cooling. The Units could overheat and
malfunction if the labels aren't removed.
The Master Unit can be mounted on any CQM1-CPU. In principle, just one
Master Unit can be connected to a PLC due to the limitation of the CPU's I/O
areas.
Always mount the CQM1-ARM21 as the rightmost I/O Unit in a CQM1 system
to reduce the amount of heat transferred to/from neighbouring I/O units.
When mounting additional I/O units to the CQM1 PLC system, check the total
power consumption of the system, and select the appropriate power supply
unit (See CQM1 Operation Manual, W226-E1).
Section 2-2