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engine / genset control

auto transfert switch

MNS
Auto transfert
switch unit
• Simple and effective unit
• 3 phase mains voltage monitoring
• Adjustable voltage with potentiometer
• Remote start output

The MNS is a basic, microprocessor controlled unit designed
to monitor 3-phase mains
voltages, send remote start
commands to the generating
set, and manage changeover
of both the generator and the
mains contactors.
The genset should be controlled
by a Remote Start control unit.

A SIMPLE PRODUCT FOR BASIC APPLICATIONS

The functions have been reduced to the minimum. The front panel mimic diagram provides information about the mains and generator power availability
as well as contactor positions.
The MNS continuously monitors the AC mains phase voltages. If at least one of
the phase voltages goes outside set limits, it triggers a transfer cycle.

SPECIAL TEST MODE FUNCTION

The MNS provides a TEST mode pushbutton allowing the genset to be tested
without a mains failure. The Test mode is also called the Emergency Backup
mode which keeps the genset running and makes a quick transfer in the event
of a mains failure.

HIGH COMPATIBILITY AND FLEXIBILITY

Because of the simplicity of its connections, the MNS may be used with most
commercially available or custom built engine control systems.
The lower limit of the mains and genset voltages may be manually adjusted via
the potentiometer found on the left hand side of the unit. The upper voltage
limit is factory set.
The unit uses two part connectors for easy replacement

RELIABLE AND EASY TO USE

The MNS is dedicated to basic applications which require no extra costs or
expensive hardware.
All CRE Technology products aim to provide the same satisfaction levels. The
MNS has passed EMC and low voltage tests, and each unit is 100% tested before delivery.

www.cretechnology.com