SUPREMATouch
190
Installation
MSA
US
Relay Inhibit
- By connecting a switch to the LOCR contact of the MRC TS module, all the relays of the con-
nected MRO 8 TS modules can be inhibited simultaneously.
- Individual relays cannot be inhibited in this way. The only way to inhibit an individual relay is to
inhibit the associated input (Chapter 10.3).
- By means of the bridge (BR1), the type of inhibiting (normally energised or normally de-ener-
gised) can be specified (Chapter 10.3).
NOTE: The type of inhibiting must agree with the type selected on the operating menu for the relay
outputs and must be the same for all relays connected to the MRC TS module (Chapter 10.4)
Because the common alarms operate according to normally energised principle and cannot be
changed, the first 32 freely configurable relay outputs must also be configured according to the
normally energised principle (normal: ON) if relay inhibiting is provided.
NOTE: If the normally energised principle is selected for inhibiting, then, to ensure the voltage sup-
ply to the relays, after the SUPREMA voltage supply is turned off, an independent external voltage
supply must be connected to the appropriate terminals of the MRC TS module (EXT/BAT, 24
VDC).
NOTE: If service is finished the inhibit status of the relays must be cancelled. During the time the
relays are inhibited, the system fail is set.
MRO 8 TS Module, Relay Output Unit
The MRO 8 TS module is used in conjunction with the MRC TS module when additional types of
messages are required in addition to the common alarms. The module has 8 relays, each with its
own changeover contact (250 VAC/3 A). They are controlled by an MGO module, operating by
way of the MRC TS module. For this purpose, the MRO 8 TS module is connected by a 20-way
ribbon cable to the MRC TS module. The inhibiting of the relays is accomplished via the LOCK
function of the associated MRC TS module. (The LOCR terminal on the MST module affects only
the common alarms when an MRO 8 module is plugged into the rack).
MRO10 8 TS Module, Relay Assignment
The first 8 outputs of the system are assigned to the common alarm messages. The outputs of
additional modules can be assigned to any message desired.
Fig. 126 MRO 8 TS Modules, Common Alarm Relay Assignment
normally de-energised = relay energised = alarm
normally energised = relay de-energised = alarm
Relay No. Assignment
11
st
Alarm
22
nd
Alarm
33
rd
Alarm
44
th
Alarm
5 Signal Failure (Sensor)
6Horn
7 Inhibit
8 Power Supply Failure
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