Siemens SIMATIC ET 200eco PN, Operating Instructions Manual

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Connection of a digital output to a digital input
WARNING
When a digital output is connected to a digital output, the respective potential groups have
to be observed. Depending on the configuration, 1M and 2M may then be connected, result­
ing in elimination of the galvanic isolation between 1L+ and 2L+.
Line protection
Line protection is required in accordance with DIN VDE 0100, i.e., you must always provide
external fusing.
The power supplies of the I/O device must be fused using a 24 V DC/4 A miniature circuit
breaker with tripping characteristic type B or C.
The power supplies of the terminal block must be fused using a 24 V DC/10 A miniature
circuit breaker with tripping characteristic type B or C.
The power supplies of the voltage distributor must be fused using a 24 VDC / 8 A miniature
circuit breaker with tripping characteristic type B or C.
3.4 Technical specifications of the cables
Impact of the cable length on the supply voltage
• When you wire your configuration, you must take into account the impact of the cable
length on the supply voltage of the ET 200eco PN.
Example
When using a 10 m cable with Ø 0.75 mm
2
, the resistance is 0.5 Ω; this is equivalent to a
2 V voltage drop at 4 A.
NOTE
If you do not maintain the maximum feed current and the appropriate cable cross-sec­
tions, you will risk overheating of the cable insulation and contacts, and damage to the
device.
3.5 Wiring the ET 200eco PN
3.5.1 Wiring the ET 200eco PN to functional earth (FE)
Introduction
You must connect the ET 200eco PN with the functional earth (FE).
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ET 200eco PN
Operating Instructions, 06/2022, A5E01250250-AN
Wiring
3.5 Wiring the ET 200eco PN