
Installation
Page 16
RESM-5
7.2.2
RESM-5 and RESISTRON
controllers with joint evaluation of
alarms (loop-through mode)
The RESISTRON monitoring device RESM-5 has a
control input for evaluating the alarms of the main
RESISTRON controller. If the main RESISTRON
controller indicates an alarm, the RESM-5 immediately
energizes its own alarm output (loop-through mode).
The wiring between the RESM-5 and the main
RESISTRON controller is simpler than when the alarms
are separately evaluated (
and RESISTRON controllers with separate evaluation
of alarms (recommended by ROPEX)" on page 15). On
the other hand, it is very difficult to reconstruct the
alarm sequence. Servicing and troubleshooting are
likewise more complicated.
To prevent dangerous situations, refer to the
risk analysis for the machine or plant.
!
U
R
I
R
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A
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RESISTRON
U
R
I
R (RESM)
RESM
MONITORING
MAIN CONTROLLER
Alarm
output
Alarm
output
Kb
+24VDC
+24VDC
0V
Kb
Kb
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in p
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Alarm
input