Siemens SIMATIC ET 200SP System Manual

Wiring
6.3 Additional rules and instructions for operation with motor starters
Distributed I/O system
92 System Manual, 09/2019, A5E03576849-AJ
6.3 Additional rules and instructions for operation with motor starters
6.3.1 Protection against short circuit
The motor starter complies with type of coordination 1. Secure the feeder cable for the infeed
bus according to current, country-specific rules for conductor protection.
WARNING
Hazardous Voltage at the Motor
Can Cause Death, Serious Injury, or Property Damage.
Following a short-circuit, the SIMATIC ET 200SP motor starter is defective. Replace the
motor starter following a short-circuit.
6.4 Operating the ET 200SP on grounded incoming supply
Introduction
Below you will find information on the overall configuration of an ET 200SP distributed I/O
system on a grounded incoming supply (e.g. TN-S network). The specific subjects discussed
are:
● Disconnecting devices and short-circuit and overload protection according to IEC 60364
(corresponds to DIN VDE 0100) and IEC 60204 (corresponds to DIN VDE 0113)
● Load power supplies and load circuits.
Grounded incoming supply
In the case of grounded incoming supplies (TN-S system) the neutral conductor (N) and the
protective conductor (PE) are each grounded. Both conductors form a part of the overvoltage
concept. When a plant is in operation, the current flows across the neutral conductor. When
a fault occurs, for example, a single ground fault between a live conductor and ground, the
current flows through the protective conductor.
Safe electrical separation (SELV in accordance with IEC 61131-2 or IEC 61010-2-201)
Load power supplies/power supply modules with 24 V DC output voltage require safe
electrical separation and voltage limiting (extra low voltage). Load power supplies/power
supply modules with 24 V DC output voltage are not connected to the protective conductor.
According to IEC 61131-2 and IEC 61010-2-201, this protection is referred to as SELV
(Safety Extra Low Voltage).
The wiring of SELV circuits must be safely separated from the wiring of other circuits that are
not SELV, or the insulation of all conductors must be dimensioned for the higher voltage.

Siemens SIMATIC ET 200SP Specifications

General

System Type	Distributed I/O System
Mounting	DIN Rail
Communication Protocol	PROFINET, PROFIBUS
IP Rating	IP20
Category	I/O Systems
Supply Voltage	24 V DC
Modularity	Yes
Hot Swapping	Yes
Storage Temperature	-40°C to +70°C
Digital Inputs	Yes
Digital Outputs	Yes
Analog Inputs	Yes
Analog Outputs	Yes
Communication Interface	PROFINET, PROFIBUS
Number of Modules	Up to 64
Relative Humidity	5 to 95% (non-condensing)
Operating Temperature	-25°C to +60°C