Figure 3-19.
Output Shutdown Connection.
If two or more units are floating, and you are using a single external contact to turn output off
for all the units, use a relay or similar device for the external contact signal to isolate the signal
transmitted to each unit.
Long-Distance Wiring
When you are wiring over a great distance, use a small relay and extend the coil side of the relay.
Figure 3-20.
Long Distance Wiring.
Controlling the Clearing of Alarms
This section explains how to use an external contact to clear alarms.
Caution
Risk of electric shock. If neither output terminal is tied to chassis ground,
the reinforced or double insulation of the external contact (S) and the connected cable
must be greater than or equal to the isolation voltage of the RMX programmable power
supply. Refer to Appendix A,
, for the isolation voltage of your model.
If one of the output terminals is connected to chassis ground, the insulation of the
external contact and the connected cable must have a reinforced or double insulation
with a capacity greater than or equal to the maximum output voltage relative to the
chassis.
When using shielded cables for the connection, for uncovered sections of the shielded
cables, use insulation tubes to secure reinforced or double insulation with a capacity
greater than or equal to the isolation voltage of the RMX programmable power supply.
2-core shielded wire or
twisted-pair wire
Output terminals
J1
6
19
RMX
S
S
Extend this line.
Relay
