Connecting cables and power supply

Notice

Incorrect connection procedure

Incorrect procedure when connecting the cables and the power supply can cause hardware damage.

  • Follow the documented procedure for connecting the cables and the power supply.
  • Always connect the cables first and only then switch on the power supply.
  • Please read the documentation for the external devices prior to connecting them.

The connections are located at the rear in the connection section of the device.

Connecting cables

Make sure that you first ground the panel (see Chapter 4.3.2 Grounding the control panel) and then plug in all data transmission cables.

When connecting the control panel to an industrial PC with UPS output, Beckhoff recommends using this for the connection so that the display is also active in UPS mode. Only one control panel may be connected to the UPS output on the PC.

Connect power supply cable

Cables with a maximum cable cross-section of 1.5 mm2 can be used for connecting the power supply. For long supply lines, use 1.5 mm2 cables to achieve a low voltage drop on the supply line. There should be at least 22 V at the power supply plug of the control panel, so that the panel remains switched on during voltage fluctuations.

Proceed as follows to connect the 24 VDC power supply unit:

  1. First mount the power supply cable with the 5-pin connection strip without its strain relief housing.
  2. Plug the voltage connector into the voltage socket on the panel.
  3. Screw the voltage connector to the voltage socket.
  4. Connect the panel to your external 24 V power supply.
  5. Switch on the 24 V power supply.
  6. Measure the voltage at the 5-pin connection strip of the panel.
  7. Mount the strain relief housing on the 5-pin connection strip.

Assembly of strain relief housing

Now mount the strain relief housing on the previously connected plug and power supply cable as shown:

1. Thread the cable tie into the lower part of the strain relief housing (section A).
2. Insert the connection strip into the lower part of the strain relief housing (section B).
Connecting cables and power supply 1:
Assembly of strain relief housing
3. Tighten the cable tie and remove the plastic tab (section C).
4. Attach the upper part of the strain relief housing by snapping it onto the lower part (section D).
Connecting cables and power supply 2:
Assembly of strain relief housing
You have mounted the strain relief housing.

To remove the strain relief housing, proceed as follows:

1. Use your fingers to bend the latching lugs on the lower part slightly outwards.
Connecting cables and power supply 3:
Disassembly of the strain relief housing
2. Lever the upper part off the lower part.
3. Cut the cable tie.
You have removed the strain relief housing.