Siemens SIMATIC Operating Instructions

General Technical Specifications
6.5 Specifications for Dielectric Tests, Protection Class, Degree of Protection, and Rated Voltage
ET 200pro Distributed I/O System - Fail-Safe Modules
48 Operating Instructions, 05/2007, A5E00394073-02
6.5 Specifications for Dielectric Tests, Protection Class, Degree of
Protection, and Rated Voltage
Test Voltage
Dielectric strength is proven during the type test with the following test voltage in accordance
with IEC 61131-2:
Circuits with rated voltage U
e
to other circuits
or to ground
Test voltage
≤ 50V 500 V DC
≤ 150V 2,500 V DC
≤ 250V 4,000 V DC
Pollution Degree/Overvoltage Category in Accordance With IEC 61131
● Pollution degree 2
● Overvoltage category
– At U
r
= 24 V DC: II
Degree of Protection IP65
Degree of protection in accordance with IEC 529
● Protection against the ingress of dust and full protection against physical contact
● Water projected by a nozzle against the enclosure from any direction shall have no
harmful effect.
Degrees of Protection IP66 and IP67
Degree of protection in accordance with IEC 529
● Protection against the ingress of dust and full protection against physical contact
● IP66: Water from heavy seas or water projected in powerful jets shall not enter the
enclosure in harmful quantities.
● IP67: Protection against water when enclosure is immersed at specified pressures over a
specified time period (water must not enter the enclosure in any harmful amount)
Rated Voltage for Operation
The ET 200pro distributed I/O device operates at the following rated voltage and
corresponding tolerance.
Rated voltage Tolerance range
24 V DC 20.4 V DC to 28.8 V DC

Siemens SIMATIC Specifications

General

Product type designation	SIMATIC
CPU	Varies by model
Memory	Varies by model
Input/Output	Varies by model
Communication	Varies by model
Programming Language	STEP 7
Operating Temperature	0°C to 60°C (varies by model)
Protection Class	IP20
Category	Programmable Logic Controller (PLC)