Internal power supply A power supply for the system electronics for an input voltage of 24 V DC (–15% / +20%) is integrated into the device. The power supply has integrated protection against reverse polarity and surge current protection (1.2 A).
Fuse the supply lines for the IO lines (L1+ to L4+) externally so that the value (approx. 5 A) for the power-limited electrical circuits (150/U) are not exceeded (U = value of the voltage applied). Installation All connections and cables must be laid out so as to prevent inductive and capacitive interference causing any damage to the device.
Ensure that the infeed lines provide adequate current and voltage carrying capacity.
The functional earth dissipate
HF currents and increase the stability of the device. HF faults are transferred internally from the electronic circuit board to the metallic housing which requires a suitable connection to a functional earth (X20). Earthing the ECC22XX Requirements: The support rail has a good conductive contact with the control cabinet. The control cabinet must be earthed correctly. Ensure that the device housing has good conductive contact with the support rail. If specifically required in certain installations, additional PE conductors may be connected to protect all metallic parts from high voltages on the underside of the device (PE connection). The device is now earthed. Where necessary, the device can also be connected directly to the earth
Digital outputs (O)
The digital outputs are positive switching 24 V outputs with an output current of max. 500 mA. They have a common reference potential (GND) with the supply voltage. The supply lines are organised into four groups of four. The following counterpieces have been tested for the SC-SMT 3.81 (Weidmüller) plug-in connector and are approved for use with the ECC22XX: Weidmüller BCZ 3.81/16/180 (F, LH) Weidmüller BCF 3.81/16/180 (F, LH) Phoenix FK-MCP 1.5/16-ST-3.81-LR The maximum output current is 0.5 A and the output stage is protected against overload. Take possible limitation of the output current when connecting external devices (e.g. increased surge current from lamps) into account
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