Siemens SIMATIC ET 200iSP User Manual

WARNING
Intrinsically safe circuit
Connecting an intrinsically safe sensor, actuator, or HART 󹪝eld device to the input/output of an
electronic module must produce an intrinsically safe circuit! Always check for resultant safety
values when you select the sensors, actuators and HART 󹪝eld devices for an electronic module.
4.4.2 PROFIBUS con󹪝gurations in zones for IM 152-1DP
General rules
Regardless of the con󹪝guration of the ET 200iSP in the hazardous areas or in the safe area, the
following applies:
The ET 200iSP distributed I/O device can only be operated on the intrinsically safe PROFIBUS
RS 485‑IS:
1. RS 485‑IS coupler (󹪝eldbus isolating transformer) always required
2. Marking of the PROFIBUS DP as Ex i (not only for hazardous areas!)
3. Marking of the cables/lines to the actuators and sensors as Ex i (e.g. light blue in color).
WARNING
Only connect intrinsically safe devices to PROFIBUS RS 485-IS
All devices that you connect to the PROFIBUS RS 485‑IS must be intrinsically safe.
The connection of voltmeters, oscillographs and bus testers to the PROFIBUS RS 485-IS is not
permitted.
Rules for the con󹪝guration of the ET 200iSP in Zone 1
If you use the ET 200iSP in zone 1, then you must observe the following rules:
1. Install the ET 200iSP in an enclosure with degree of protection Ex e (increased safety) (see
section "Installation rules (Page 101)", see Appendix "Article numbers (Page 419)").
2. Disconnect thePROFIBUS DP using the RS 485‑IS coupler (see Appendix "Article numbers
(Page 419)"). The RS 485‑IS coupler ensures the degree of protection Ex i of the PROFIBUS DP
in hazardous areas. You can install the RS 485‑IS coupler in the hazardous area of Zone 2 or
in the safe area.
3. You can use normal PROFIBUS DP bus cables in hazardous areas (see Appendix "Article
numbers (Page 419)"). However, you must mark these as "Ex i bus cables" (e.g. attach blue
tape/blue shrink-on sleeve on the ends; mark the cable with blue color).
Con󹪝gurations (principle)
4.4 Rules for operation in hazardous areas
ET 200iSP
66 Operating Instructions, 11/2022, A5E00247483-AK

Siemens SIMATIC ET 200iSP Specifications

General

Brand	Siemens
Model	SIMATIC ET 200iSP
Category	I/O Systems
Language	English