Wiring The Et200Pro System - Siemens SIMATIC ET 200pro Series Operating Instructions Manual

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The minimum cross-section of the protective conductor
section of the line or motor feeder cable:
● Line or motor feeder cable ≤ 16 mm
⇒ Minimum cross-section of the protective conductor = cross-section of the line or motor
feeder cable
● 16 mm² < line or motor feeder cable ≤ 35 mm
⇒ Minimum cross-section of the protective conductor = 16 mm
● Line or motor feeder cable > 35 mm
⇒ Minimum cross-section of the protective conductor = ½ cross-section of the line or
motor feeder cable
Additional requirements placed on the protective conductor
● For permanent connection, the protective conductor must fulfill at least one of the
following conditions:
– The protective conductor is routed so that it is protected against damage along its
– As a conductor of a multi-conductor cable, the protective conductor has a cross-
– For an individual conductor, the protective conductor has a cross-section ≥ 10 mm²
– The protective conductor consists of two conductors with the same cross-section.
● When connecting a multi-conductor cable using an industrial plug connector according to
EN 60309, the protective conductor must have a cross-section of ≥ 2.5 mm² Cu.
4.10

Wiring the ET200pro system

Overview
Communication and auxiliary voltages are routed with standard connectors through the
interface module (or power modules) and the backplane bus to the converter and do not
have to be considered here.
The converter is rated for direct operation on TN and TT line supply systems with a
grounded PEN conductor with a rated voltage of 3 AC 400 V. In the case of systems where
EMC requirements are to be fulfilled, the prescribed shielded cables must be used. For this
we recommend standard CY cables; the shield must be grounded at both ends and the
perfect connection of the shielding must be checked.
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257324B AE
Protective conductor between PE and the electrical cabinet
Protective conductor for motor feeder cables
complete length.
(Cables routed inside electrical cabinets or enclosed machine housings are
considered to be adequately protected against mechanical damage.)
section ≥ 2.5 mm² Cu.
Cu.
4.10 Wiring the ET200pro system
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2
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Installation
depends on the cross-
2
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