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Installation Instructions / ACS-8
10. Determining the sizes of the power supply unit and the battery
10.1 Determining the size of the power supply unit
The ACS-8 part. No. 026585 is delivered with the power supply and charging unit 010690.02.
The factory settings of the DIP switches of this power supply unit are as follows:
S1/1
S1/2
S1/3
S1/4
ON
OFF
OFF
OFF
(The description of the settings can be found in the respective power supply unit documentation.)
If more power is required, the following alternative power supplies are available:
-012168
Power supply and charging unit, 80Ah, continuous current drain 3.5A can be used with part.
No. 026575 - ACS 8 excluding psu.
-012170
Power supply and charging unit, 130Ah, continuous current drain 5A can be used with part.
No. 026575 - ACS 8 excluding psu.
The DIP switches of these two power supply units must be set as follows:
S100/1
S100/2
S100/3
S100/4
OFF
ON
OFF
OFF
(The description of the settings can be found in the respective power supply unit documentation.)
The ACS-8 can physically hold:
1 x 018003
battery 12V 3.5Ah or
2 x 018002
battery 12V 2.0Ah
The following gives an example of how to calculate the current consumption of an ACS 8 controlling one
door:
The ACS-8 controls one door.
Component
Current
Remark
CPU
200mA
Incl. alarm and tamper relay as these are usually energised.
Interface
200mA
Floating RS 485 interface
Reader (2x
140mA
Two contactless / proximity readers, each 70mA
Door strike
230mA
Esser DC fail save door strike
Total
770mA
+10%
77mA
Total
847mA ~
850mA
Larger actuators (e.g. door strikes) or devices with higher current consumption can be supplied from
external power supply units (see chapters 18.1 and 18.2: If this is the case, +12V DC and 0V are
connected to the external power supply unit and not to terminals 45 and 46).
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