SPX Radiodetection PCM+ - Page 11

PCM
+
Operation Manual 7
Vehicle DC to AC Inverter
Power supply from a vehicle DC to AC inverter which
provides 300W or more at 230V (110V) from 12/24V DC,
can also be used.
DC Supply
This allows the PCM
+
transmitter to be powered from two
12V or one 24V-auto batteries.
20-50V DC and 15-35V rectied
AC supply
The input voltage range is 20-50V DC (14-35V rectied
AC). The current drawn from the supply will be a
maximum of 5A.
Ensure that the rectier is switched off.
Then connect the black lead to the negative supply
and the red lead to the positive supply, and switch the
receiver on.
If the supply cannot provide 5A, this will be indicated by
the power limit warning light.
Turn the six position, Current Select switch to the
minimum position and switch on the PCM
+
Transmitter.
Progressively increase to obtain a current output setting
which does not overload the input.
Maximum output power is dependent upon voltage.
For example, on a particular pipe an input voltage of
20V may only allow a maximum output of 300mA,
whereas an input voltage of 50V may allow an output
of 3A.
The transmitter DC input is protected against reverse
polarity and over-voltage, and will not operate unless
connected correctly.