MSA SUPREMATouch MCP 20, Руководство по эксплуатации

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119
Modules
GB
SUPREMATouch
MRO8 Module (Relay Output Module: Common Alarms)
This module must be used when relays alone are required for actuating common alarms and
installation is to be accomplished directly in the rack. The module can be plugged directly into the
MIB module (rear of the rack). It then makes the 8 common alarm relays available. If more relay
outputs are to be provided, then MRO 8 TS modules are to be used together with the MRC TS
module (installed on the mounting rail). Each relay has a changeover contact connected to screw
terminals.
Function of the Module
• The module is plugged into the rear of the rack
• It is driven by the MGO module in the rack
• 8 relays for giving common alarms, i.e., 1st alarm, 2nd alarm, 3rd alarm, 4th alarm, signal fail,
horn, inhibit, power supply
• One changeover contact, connected to screw terminals, is provided for each relay
• Standard design: Relay energised = no alarm. The relay is de-energised when an alarm is trig-
gered at one or more measuring point (normally energised)
• Custom design: (not allowed for safety relevant applications) Relay de-energised = no alarm.
The relay is energised when an alarm is triggered at one or more measuring point (normally
de-energised)
• The relays can be inhibited via the MST module (to prevent alarms)
MRO8 Module: Relay Assignment
MRC TS Module (Relay Connection Module)
This module is used when relay modules separate from the rack are installed on a mounting rail.
An MRC TS module is used to connect up to 5 TS Relay modules. The relay power supply and
the ribbon cable, which are required for the control of the relays by the MGO module, are attached
to this MRC TS module. It is possible to control 5 MRO modules (with alternatively 8 or 16 Relays
each). The MRC TS module is connected to the MGO module over a 40-way ribbon cable (2 for
the redundant version) and a rack mounted MUT module. In the redundant version 2 MGO
modules are used and are connected via 2 MUT modules and 2 ribbon cables to the MRC TS
module.
• Connections for the relay power supply (3 x 24 VDC)
• Connections for relay inhibiting
• Bridge (BR1) for the selected type of inhibit (normally energised/normally de-energised)
MRO8 TS Module (Relay Output Module: Non-redundant)
This module is provided when not only common alarms but also other messages are required.
Each relay has a changeover contact (230 VAC/3 A). The module makes 8 relays available, each
with its own changeover contact. The relays are controlled by an MGO module, operating via the
MRC TS module.
MRO8 TS Module: Function of the Module
• The module is controlled by an MGO module operating via the MRC module
• 8 relays for alarms or control functions
• 1 changeover contact per relay connected to terminals
• The relays can be inhibited by the LOCK function (no alarm). The LOCK function can be
controlled via the MRC TS module
Relay 1: 1
st
Alarm
Relay 2: 2
nd
Alarm
Relay 3: 3
rd
Alarm
Relay 4: 4
th
Alarm
Relay 5: Signal fail (sensor)
Relay 6: Horn
Relay 7: Inhibit
Relay 8: Power supply failure