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4.2.1
Relay output
Control terminal X10
Ter.
Description
1 ... 3 Relay output, floating change-over contact, response time approx. 40 ms,
maximum contact load:
− make contact: AC 5 A / 240 V, DC 5 A (ohmic) / 24 V
− break-contact: AC 3 A / 240 V, DC 1 A (ohmic) / 24 V
4.2.2
GB
External 24 V power supply
The bidirectional control terminals X210A.1/ X210A.2 can be used as a voltage output or voltage input. By
connecting an external power supply of DC 24 V ±10% to terminals X210A.1/X210A.2, the function of inputs
and outputs as well as the communication can be parameterized and maintained, even when mains voltage is
off.
Input voltage range
Rated input current
Peak inrush current
External fuse
Safety
Requirements to be met by external power supply
DC 24 V ±10%
Max. 1.1 A
Typeically: < 25 A
Via standard fuse elements for rated current, characteristic: slow
Safety extra low voltage (SELV) according to EN 61800-5-1
CAUTION
The digital inputs and the DC 24 V terminal of the electronic control equipment can withstand
external voltage up to DC 30 V. Avoid higher voltage levels. Higher voltages may destroy the unit.
4.3
Auxiliary voltage terminals ACU size 8 (160...400 kW)
When using an ACU501 or ACU601 device the connection of 3 x AC 400 V on terminal X13 is necessary.
1…6
7
8
9
10
Terminal X13
Not used
PE
L1
L2
L3
Connection
Connection power ≥ 1,2 kW
Connection voltage 400 V +- 10 %
Connection fre50 / 60 Hz
quency
62
Quick Start Guide ACU
02/15