mcr OMEGA pro
Power and Control Panel
„MERCOR” S.A. –
The company reserves the right to modify and amend this document without notice.
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3.6.
mcr MMS/EVCO MONITORING AND CONTROL MODULES
The power and control functions of the mcr OMEGA pro are handled with the mcr MMS
microprocessor-based monitoring and control modules. The mcr MMS modules have been designed
specifically for controlling the Power and Control Panel and they are freely programmable according to the
requested fire scenario. The mcr MMS modules receive and execute the commands from a Fire Alarm
System or another master controller to actuate the requested interfaced devices tasked with proper
operation of the heat and smoke control systems. With extensive functionalities, the mcr MMS modules
can handle even the most complex control algorithms with internal logics, timers and counters. The mcr
MMS modules enable programming of internal delay times for control operations, and filter input signals
as required by the building characteristics covered by the Power and Control Panel system. The number
of the mcr MMS modules depends on the installation system specifications. The mcr OMEGA pro have 3
types of monitoring and control modules that can be used to develop the control system.
3.6.1.
BASIC MONITORING AND CONTROL MODULES
Each mcr MMS module has 12 digital inputs and 6 relay outputs. Each mcr MMS module can feature
one of the available extension cards that is installed in the CARD SLOT, and feeding control signals to
terminals 12, 13 and 14.
The available extension card types include:
3× digital inputs
1× relay output
0
–10 VDC analogue input
0
–10 VDC analogue output
RS-485 (Modbus RTU)
The mcr MMS modules require 24 VDC power
connected to the 24 V + and - terminals. If the PWR
LED is on, the mcr MMS module receives proper
supply voltage.
Each mcr MMS module is addressable with the
ADR switch
(for service personnel only)
.
The digital inputs (IN)
are isolated and can monitor the signal continuity with a 10 kΩ end of line (EOL)
resistor and timeout control of the input signal changes (e.g. for damper position limit switches). Each input
status is read on its mcr MMS module with two LED indicators. Table 1 shows the possible input statuses
recognized. All module inputs are referenced to 18.7 VDC common on the CM terminal.
Connect the inputs to dry contacts coupled with EOL resistors only.
Table 1. Input status indication on the mcr MMS module.
Red
LED
Green
LED
Break
,
Contact made
timeout
Break
Make
,
contact break
timeout
Make
or
break
and
contact break/make
timeout
Break
,
Contact break
timeaout (monitoring
input) or active
algorithm (alg. input)
Make
Make
, contact break
timeout (monitoring
input) or active
algorithm (alg. Input)
Continuity lost
Fig. 8. Overview of the mcr MMS module..
