Operating The Et 200Isp With Equipotential Bonding - Siemens SIMATIC ET 200iSP Operating Instructions Manual

5.2

Operating the ET 200iSP with equipotential bonding

Components and protective measures
When setting up a system, various components and protective devices are mandatory. The
types of components and the degree to which the protective measures are mandatory depend
on the DIN VDE regulation that applies to your plant setup. The table below relates to the
schematic that follows.
Table 5-5
Compare
Shutdown device for
controllers, transduc‐
ers and actuators
Short-circuit and over‐
load protection
Safety isolation
Reliable electrical isolation is required with modules that are powered with voltages ≤ 60 V DC
or ≤ 250 V AC, in other words, the power supply of the ET 200iSP must be reliably electrically
isolated.
ET 200iSP with ungrounded reference potential
With the ET 200iSP, the reference potential M of the power supply relative to the protective
conductor is ungrounded.
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
24 VDC supply in the safe area
Relates to figure
(1)
(2)
5.2 Operating the ET 200iSP with equipotential bonding
DIN VDE 0100
...Part 460: Main switch ...Part 1: Disconnector
...Part 725: Single-pole
protection of circuits
Wiring
DIN VDE 0113
...Part 1: With a groun‐
ded secondary circuit:
single-pole protection
105