630.x Power supply fault
Description
The 24 V supply voltage of ACOPOS is below tolerance.
Remedy
- In ACOPOSmulti the backplate supplies the 24 V. Check correct contact and assembly to the backplate.
- With external power supply via an expansion module, check the corresponding device, its fuses as well as the fuses in the expansion module.
Be absolutely sure that when changing the fuses all components (incl. external power supplies such as Pulsar) have fully discharged (0 V)! If this is not done, the fuse can be immediately destroyed by charge balancing (high currents between capacitors).
A defective fuse does not differ visually from an intact one. A reliable statement about the state of the safety element is given only by a continuity check (e.g. ohmmeter).