User manual

USER MANUAL 1.4 | EC1000
Berghof Automation GmbH | Harretstrasse 1 | 72800 Eningen | www.berghof.com
EC1000_HB_en_2D1652005ZD00.docx | 2VF100179FE04.docx
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2.6.2. Connecting
Power supply
The controller is energised from an external 24 VDC external power supply. Before connecting up, check that
the specifications required for the external power supply are observed.
External power supply (24 VDC)
Output voltage
+24 VDC SELV (-15 % / +20 %)
Ripple
Max. 5 %; the DC voltage must not fall short of 20.4 V.
Internal power supply unit
A power supply unit for the system electronics is installed to provide 24-VDC input voltage (-15 % / +20 %).
The power supply unit possesses integrated polarity-reversal protection and inrush-current limitation.
Both supply lines and the power supplies must be protected by an external short circuit and overload protec-
tion with a maximal tripping current of 5 A in each case (depending on the number of I/O).
Installation
All connections and lines must be executed so that no faults are caused by inductive and capacitive interfer-
ence in the controller. The supply lines must be sufficiently resilient to current and voltage. Shielded lines
must be used for communication. The shield must be fitted onto the module.
Plug DI/Supply assignment
DI/Supply
DI
Digital input 24 VDC (-20 % / +25 %)
L+
External power supply 24 VDC (-15 % / +20 %)
L-
External power supply GND
Energy buffering
Power Fail 10 ms depending on compliance with the max. number/load by I/O modules.