Installation
RESM-5
Page 15
7.2
Installation steps
7.2.1
RESM-5 and RESISTRON
controllers with separate
evaluation of alarms
(recommended by ROPEX)
The RESISTRON monitoring device RESM-5 is a
separate unit which should also be integrated as such
in the plant or machine concept.
The alarm outputs of the main RESISTRON controller
and the RESM-5 energize separate contactors or
relays (Kb, Kb‘). The alarm output signals are
additionally transferred to the PLC / machine control
system as control signals. The alarm outputs of the
RESM-5 and the main RESISTRON controller can be
separately evaluated and tested in this way. The
additional control signals to the PLC / machine control
system enable both the status and the sequence of the
alarms to be evaluated (e.g. an alarm indicated by the
main RESISTRON controller results in an RESM-5
alarm). This wiring principle is shown in the diagram
below.
To prevent dangerous situations, refer to the
risk analysis for the machine or plant.
!
U
R
I
R
LO
A
D
LI
NE
RESISTRON
U
R
I
R (RESM)
RESM
MONITORING
MAIN CONTROLLER
Alarm
output
Alarm
output
Kb’
Kb
+24VDC
+24VDC
0V
0V
Control signal
to PLC
Control signal
to PLC
Kb’
Kb
Kb’
Kb
C
o
nn
ec
t lin
e vo
lta
ge
in p
h
as
e