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
24 VDC supply in the safe area
Compare
Relates to figure
DIN VDE 0100
DIN VDE 0113
Shutdown device for
controllers, transduc‐
ers and actuators
(1)
...Part 460: Main switch ...Part 1: Disconnector
Short-circuit and over‐
load protection
(2)
...Part 725: Single-pole
protection of circuits
...Part 1: With a groun‐
ded secondary circuit:
single-pole 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.
Wiring
5.2 Operating the ET 200iSP with equipotential bonding
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
105