mcr OMEGA pro
Power and Control Panel
„MERCOR” S.A. –
The company reserves the right to modify and amend this document without notice.
7/28
3.2.
MAINS POWER SUPPLY
The Power and Control Power can work either on 230 VAC / 1L+N+PE mains or 3x400 VAC/3L+PE or
3L+N+PE mains. The mains can be supplied over wiring without a PE conductor; this requires a local PE
connection of the Power and Control Panel. The mains input terminals are inside the Power and Control
Panel and coupled directly to the main power switch which is used to isolate the Power and Control Panel
from live voltage for e.g. servicing.
The mcr OMEGA pro Power and Control Panel requires uninterruptible (secure or
redundant) power supply which shall be provided from a separate fire power supply
section of the building's main switchboard to guarantee continued operation, even in the
event of a fire.
Optionally, the Power and Control Panel supply input
can be secured with type B+C or C surge protection that
will prevent catastrophic failure of this device in
overvoltage conditions, e.g. a lightning stroke to the
building installation.
3.3.
AUTOMATIC TRANSFER SWITCHING MODULE (ATS)
If the installation system design or the existing conditions of the building features no load transfer
switching at the main switchboard, whereas no uninterruptible power supply can be connected to the
Power and Control Panel, the mcr OMEGA proF can be optionally equipped with the Load Transfer
Switching Module. The Load Transfer Switching Module enables power for the Power and Control Panel
from either of two separate mains supply lines. The Load Transfer Switching Module automatic control
switches over the power loads from the primary mains supply to the backup power supply if the former
suffers from an excessive voltage dip or failure. The backup power supply power rating must be equal to
the primary mains supply power rating to ensure operating continuity of the Power and Control Panel. The
load transfer switching delay is only several seconds long. During this delay, the control actuators will not
cease to function; the panel control system is maintained by a UPS battery. The backup power supply can
be replaced with an emergency power generator. In this configuration, the Power and Control Panel will
start the emergency power generator via a dry contact signal upon a primary mains supply failure. When
the Power and Control Panel acknowledges that the emergency power generator outputs the correct
voltage, the loads will be switched over to the latter. The time to correct output voltage of the emergency
power generator cannot exceed 15 seconds. The Power and Control Panel may optionally feature a LED
indicator for the emergency power generator status monitoring.
The following operating statuses of
the emergency power generator can
be indicated (if supported by the
emergency power generator):
Low battery,
Startup failed,
Engine overheated,
Low oil pressure,
Engine overspeed,
Generator overload,
Low fuel.
Fig. 4. Main power switch diagram.
Fig. 6.Diagram of ATS in mcr OMEGA proF Power Supply.
Fig. 5. Surge protection diagram.
Primary mains line
Secondary mains line
