Wiring
3.2 Operating ET 200eco PN on grounded mains
ET 200eco PN
32 Operating Instructions, 08/2016, A5E01250250-AJ
Isolation monitoring must be provided if:
● Ungrounded ET 200eco PN configuration
● A repetitive error is liable to cause dangerous plant states
ET 200eco PN in its overall configuration
The figure below shows the overall configuration of the ET 200eco PN distributed I/O device
(load voltage supply and grounding concept) with infeed from a TN-S system.
Disconnecting device for controller, sensors, and actuators
Short-circuit and overload protection
Fuses for line protection
Microprocessor and switch
When the ET 200eco PN is configured with ungrounded reference potential, the connection
between 1M and FE and 2M and FE is eliminated.
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