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SITRANS WM300 MFA Overview
SITRANS WM300 MFA is a highly sensitive, dual setpoint motion sensor alarm unit, used with
MSP and XPP probes. The probe detects an increase or decrease in the speed of rotating,
reciprocating, or conveying equipment and sends the information to the SITRANS WM300
MFA. The SITRANS WM300 MFA works with a pre-amplifier which can be internal to the
motion sensing probe or remote from the motion sensing probe.
Pulses generated from the probe are continually compared to the adjustable setpoint. If the
pulse rate is lower or higher than the setpoint, the alarm relays operating in a faiI-safe mode
will de-energize, indicating failure. The relays will not energize until the pulse rate increases
above or below the setpoint.
The relays can be reset automatically or manually. See Motion Failure Alarm (Page 27).
The SITRANS WM300 MFA is configured for a specific application and must be programmed
and hardwired according to application requirements. Unused inputs or outputs have no
effect on the devices specific operation and must not be wired to any other any other
peripheral equipment.
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Operating Instructions, 11/2021, A5E45090709-AC
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SITRANS WM300 MFA
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