Siemens ST PCS 7 manual Safety-related electronics modules, 11/63

© Siemens AG 2007

Process I/O

Dezentrale Peripherie ET 200pro

Safety-related electronics modules

■Overview

In combination with the safety-related automation systems of the SIMATIC PCS 7 process control system, the safety-related elec- tronics modules of SIMATIC ET 200pro can be used to imple- ment safety applications. The safety-related digital inputs record the signal statuses from safety-related sensors, and generate corresponding safety telegrams for the automation system. De- pending on the safety telegrams of the automation system, the safety-related digital outputs trigger safe shut-down procedures. They are also responsible for monitoring short-circuits and cross-circuits up to the actuator. The safe communication with the automation systems is carried out over PROFIBUS with PROFIsafe.

All modules are certified up to SIL 3 (IEC 61508) and Cat. 4 (EN954-1).

The following modules are available:

•Group fault display (SF; red LED)

•Fault display for each sensor power supply (Vs1F to Vs2F) is output on the VsF LED and the associated channels

•Status and fault displays per input/output (dual-color green/red LED)

•Identification data

•Parameterizable diagnostics

•Achievable safety class SIL 3

•Can only be operated in safety mode

■Technical specifications

For detailed technical specifications of the safety-related elec- tronics modules, see:

•Catalog IK PI

•Mall/CA 01 under "Distributed I/Os / ET 200pro"

Safety-related digital input module EM 8/16 F-DI PROFIsafe
• 16 inputs (SIL2/Cat.3) or 8 inputs (SIL3/Cat.3 or Cat.4)
• Suitable for standard switches and 3/4-wire proximity switches
(BEROs)
• Rated input voltage 24 V DC	11
• 4 short-circuit-proof sensor supplies for 4 inputs each

• External sensor power supply possible

• Group fault display (SF; red LED)

• Fault display for each sensor power supply (Vs1F to Vs4F) is output on the VsF LED and the associated channels

• Status and fault displays per input (dual-color green/red LED)

• Identification data

• Parameterizable diagnostics

• Can only be operated in safety mode

Safety-related digital input/output module EM 4/8 F-DI, 4 F-DO 2 A

•Inputs

-8 inputs (SIL 2/Cat. 3) or 4 inputs (SIL 3/Cat. 3 or Cat. 4)

-Suitable for standard switches and 3/4-wire proximity switches (BEROs)

-Rated input voltage 24 V DC

-2 short-circuit-proof sensor supplies for 4 inputs each

-External sensor power supply possible

•Outputs

-4 outputs, current sourcing/sinking

-Output current 2 A

-Rated load voltage 24 V DC

-Suitable for solenoid valves, DC contactors and indicator lights

Siemens ST PCS 7 · November 2007

11/63