Product overview
CP39xx 13Version: 3.6
3.2.1 Power supply
The control panel is supplied with a nominal input voltage of 24V. The connection to the power supply and
the external wiring of the control panel is established via the 4-pin M12 socket (X101). The plug is connected
to + 24V and GND.
Fig.6: CP39xx-0000_voltage socket pin numbering
Table3: Voltage socket pin assignment
Pin Signal Description
1 + 24V Power supply
2 GND 0V
3 GND 0V
4 + 24V Power supply
The plug for the power supply is specified for 16A. Due to the dual connection, maximum wire cross-
sections of 4 x 0.75 mm
2
can be accommodated. For long supply lines, use 4 x 0.75 mm
2
cables to achieve a
low voltage drop on the supply lines. There should be at least 22V at the power supply plug of the control
panel, so that the control panel remains switched on during voltage fluctuations. The plug is included in the
delivery. You can obtain a replacement plug from your Beckhoff Sales using the following ordering option:
• C9900-P916: power supply connector for CP39xx, round connector IP65 with strain relief for the
external supply cable