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9
Electrical connection
9.1
Power supply
The CompactPowerMonitor CPM requires a supply voltage of 24 V ± 5 % (DC) for the operation. A suitable
power supply with an adapter is included in the scope of delivery.
Please use only the provided PRIMES power supply and connection lines.
When the CompactPowerMonitor CPM is connected via the USB interface, the power is supplied by the PC
through the USB interface. If other devices are connected to the PC that also consume power, it may be
necessary to use a separate power supply.
Fig. 9.1:
Connect power supply using the example of the CPM F-10
Connect the power supply unit via the adapter to the 9 pin D-Sub socket (RS485) of the CompactPower-
Monitor CPM.
9.2
PRIMES bus
The device is supplied with power by means of the 9 pin D-Sub socket. Using an optional PRIMES converter
or a PRIMES power supply with integrated converter, the socket can also be used to connect a PC to enable
communication (see chapter 9.5 on page 28).
D-Sub socket, 9 pin
(top view, plug-in side)
5
1
9
6
Tab. 9.1:
Pin assignment PRIMES bus
24
CPM
Adapter
Pin
Function
1
Ground
2
RS485 (+)
3
+24 V
4
Not assigned
5
Not assigned
6
Ground
7
RS485 (–)
8
+24 V
9
Not assigned
CompactPowerMonitor CPM
PRIMES power supply
Revision 02/2019 EN
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