Wiring
3.2 Operating ET 200eco PN on grounded mains
ET 200eco PN
30 Operating Instructions, 08/2016, A5E01250250-AJ
Protection against external electrical interference
The table below shows what to observe in order to protect the system against electrical
interference or faults.
all plants or systems in which the
ET 200eco PN is installed
the plant or system is EMC-compatible and properly grounded for
the discharge of electromagnetic interference.
supply, signal, and bus lines the wiring arrangement and installation is correct.
signal and bus lines a wire break or conductor break does not result in undefined
states of the plant or system.
Operating ET 200eco PN on grounded mains
Introduction
This section provides information about the overall configuration of an ET 200eco PN
distributed I/O device with a grounded infeed (TN-S system). The focus in this is set in
particular on: disconnecting devices and short-circuit and overload protection according to
DIN VDE 0100 and DIN EN 60204-1.
Supply voltages of the ET 200eco PN
There are two supply voltages:
● 1L+ Non-switched supply voltage (electronic/sensor/load supply)
● 2L+: Switched supply voltage (load voltage supply)
Definition: Grounded infeed
The neutral conductor of a TN-S system is always bonded to ground. A simple short-circuit
to ground of a live conductor, or of a grounded component of the plant will trip the
disconnecting devices.
Safe electrical isolation (SELV/PELV according to IEC 60364-4-41)
The ET 200eco PN may only be operated using power supplies/power supply units with safe
electrical isolation.
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