ABB REG316 4 Series - Connecting the Binary Inputs and Outputs; Connecting the Equipment to the Auxiliary D.C. Supply

REG 316*4 1MRB520049-Uen / Rev. C ABB Switzerland Ltd
7-13
7.3.2. Connecting the equipment to the auxiliary d.c. supply
The plug for the auxiliary supply is inserted upon delivery in the
connector at the rear of the power supply unit. This plug must be
fitted to the power supply cable as shown in Fig. 7.6.
HEST 935 055 C
+ POL
- POL
N.C.
N.C.
Fig. 7.6 Auxiliary supply plug
7.3.3. Connecting the binary inputs and outputs
In the case of the narrow casing (N1), the binary inputs and out-
puts have to be wired to connectors C and D at the rear for the
first unit and to connectors A and B for the second unit.
In the case of the wide casing (N2), the binary inputs and out-
puts have to be wired to connectors G and H at the rear for the
first unit, to connectors E and F for the second, to connectors C
and D for the third unit and to connectors A and B for the fourth
unit.
All external auxiliary relays or other inductances controlled
by signals from the protection must be fitted with free-wheel
diodes across their coils.
Instructions for wiring the terminals
· Type and gauge of wire:
The signal connections to the terminals are made with
1.5 mm
2
stranded wire. Do not use crimped sleeves or other
terminations; the flexible cores are protected by the design of
the terminals.
· Terminating the wires:
Do not strip more than 10 mm of insulation from the ends of