REV 0, June 2005Page 142
Operation Manual SUPREMA
5. Installation
5.7.2.1 Relay Inhibit
• By connecting a switch to the LOCK contact of the MRC-TS module, all the relays of the
connected 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
(see section 6.3.6 Configure the Sensors).
• By means of the bridge (BR1), the type of inhibiting (normally energised or normally de-
energised) can be specified
(see section 5.3.7 Configuration of the MRC-TS Module)
normally energised = relay energised = alarm
normally de-energised = relay de-energised = alarm
Attention: 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
(see section 6.4.1 Configure the Relay Driver
Outputs). 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 supply 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.
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 card,
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).
MRO-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.
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