AEG SB4 series User Manual download pdf (Page 84)

Configuration

3.4 Synchronization of the Power Supplies

It must be specified for systems with rear connection and several power supplies

whether and/or in which way a voltage failure or a tolerance access of an output volt-

age of a power supply affects the other power supplies of the system as regards the

wiring of the synchronization lines.

There are the following possibilities for the synchronization:

All power supplies of a system operate independently.

If an error occurs on the power supply of the controller, the peripheral sower supplies

are also switched off. If a peripheral power supply fails, this is registered via a time

error of the I/O modules assigned to it (marker 21/31). The other intact power sup-

plies are not switched off in this case (see Figure 39).

Each power supply switches off all the other power supplies as well in the case of an

error (standard case).

The SYNCN signal required for the synchronization and the relay contact are led to the

subracks. The wiring measures to be carried out are described accordingly in the mod-

ule descriptions of the relevant subracks. Figure 39 shows case 2 as an example.

Note The power supply does not switch on its secondary voltages without a corre-

sponding wiring method.

3.5 PEAB Monitoring

The DKU 022 is provided to monitor the PEAB transmission paths, e.g., for line, con-

nector or PEAB driver faults. Ascertained faults are documented in the marker area and

can be evaluated (user program, process intervention). Details can be read in section

3.8.6 ”Special marker area”, and in the module description of the DKU 022.

Each pair of each I/O subracks to be monitored must be equipped with a DKU 022 for

this purpose. It is to be inserted at the costs of an I/O module to the right next to the

DKV 022 on slot 16.

The DKU 022 is to be entered in the EQL list (see information in section 3.10.1 and

DKU 022 module description).

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AEG SB4 series User Manual Page 84