Siemens SIMATIC ET 200eco Manual page 32

Distributed i/o station,-safe i/o module

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Wiring

Reliable acquisition by the fail-safe I/O module

The following table lists the minimum duration of the sensor signals for the fail-safe

I/O module. This depends on the parameter settings for the short-circuit test and

the input delay in STEP 7 (see Section 8.2).

Table 5-1

Short-Circuit Test

Parameter

Deactivated

Activated

Reliable acquisition by the safety program on the F-CPU

You will find information on the times necessary for correct acquisition of the

sensor signals in the safety program in Chapter 9 of the system description

Safety Engineering in SIMATIC S7.

Technical Specifications of the Sensors

Please refer to Chapter 8 for the technical specifications relating to the choice of

sensors.

5-6

Minimum Duration of the Sensor Signals to Allow Correct Acquisition by the

Fail-Safe I/O Module

Assigned Input Delay

3 ms

9 ms

12 ms

ET 200eco Distributed I/O Station Fail-Safe I/O Module

15 ms

23 ms

37 ms

A5E00297494-02

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