Fraser EX1250, Operating Instructions Manual

Page: 7 / 28

Remote Function Monitor for Power Unit (Optional)
On every power unit the operational status is generally shown by the ON/OFF green switch.
However this does not show that the high voltage is present.
The optional Remote Function Monitor (RFM) measures the high voltage output and
indicates if there is a fault which results in no ionisation. The fault could be:
A) in the mains supply
B) a short in the bar or cable
C) a fault in the power unit
D) bars require cleaning
If there is a fault in the EX1250 Bar the Power Unit will shut down for safety reasons - it is current
limited to 5mA.
The electronic circuitry for the RFM is on a PCB mounted inside the power unit. It does not need
any additional power source.
The connector on the power unit shown in the photo below will give a potential free signal which can
go to a remote location such an alarm or PLC on the machine.
The Remote Function Indicator is powered internally. The relay does not require an additional
source of power, such as a 12V or 24V supply, which is required by competitive equipment.
Remote Function
Monitor Connector
Instructions/Booklet/EX1250 iss.11 7