Eaton ARCON 2.0 Series, Operation And Configuration Instructions. Technical Description

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2.2.4. ARC-EC1/2.0
Figure: Current I/O unit ARC-EC1/2.0 front panel
1. Programming switches (factory setting - DIP switches 1...5 in „ON“ position / 6...8
in „OFF“ position
NOTE! The confi guration of the DIP switches must be done properly before operating the system!
2. POWER indicator light, indicates the supply voltages of each component are in order.
3. COM indicator light, lit when the master units and I/O units are communicating.
4. ERROR indicator light, indicates an internal fault detected by the component’s self-
diagnostics. Such faults include faulty current transformer or phase current unbalance.
5. Connector sockets for the modular cables
6. LED lights indicating that I> stage has started
7. Terminals for three current transformers
8. Current transformer programming switches (factory setting - all DIP switches in „ON“
position
NOTE! The confi guration of the DIP switches must be done properly before operating the system!
9. Overcurrent setting knob (IL1, IL3), setting range 0.5...6*In (factory setting 2.0*In)
10. Overcurrent setting knob (IL2, I0), setting range 0.05...5*In (factory setting 2.0*In)
NOTE! The confi guration of the overcurrent setting must be done properly before operating
the system!
11. I/O unit trip relay activated
12. Terminal block for external communication and BI/O channels and trip signal
13. Indicator LEDs for current setting