ABB CP-C.1-A-RU Manual Del Usuario página 9

(EN) Electrical connection:
Input side [INPUT 1 + - / INPUT 2 + -]:
Connect the input terminals (Fig. II)
Stripping length of the cable – see page 2
For channel 1 left-hand input terminals + -, for channel 2 right-hand input terminals + -
Output side [OUTPUT + + - -]:
Rate the lines for the maximum output current or provide a separate fuse protection.
We recommend choosing the cable cross section as large as possible in order to minimize voltage drops.
Observe the polarity.
Operating/Function:
Parallel operation, increased power: (see example Fig. III)
If a power supply unit can not handle the current requirement of the most powerful load, it is advisable to increase power by
parallel connected power supplies. For this, the primary and the redundant power supply are decoupled from one another by the
redundancy unit, as shown in Fig. III.
Otherwise the loads should be spread among individual devices independent of each other.
Parallel operation, true redundancy: (see Fig. IV)
Redundant circuits are used to increase the operational reliability and eliminate power supply outages. Events that can cause a
power supply failure include: incorrect wiring, blown fuses, or failure of a single power supply. If a fault event occurs (called initial
fault) in the first power supply circuit, power to all loads is then supplied by the second, redundant power supply. For this reason,
both power supplies must be sized to handle the total current requirement of all loads. The primary and the redundant power
supplies are decoupled from one another by the redundancy unit, as shown in Fig. IV.
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