Use Of The Et 200Isp In Category M2 Of Equipment-Group I (Mining); Restricted Number Of Connectable Electronics Modules - Siemens SIMATIC ET 200iSP Operating Instructions Manual

Configuration options

3.6 Restricted Number of Connectable Electronics Modules

Intrinsically safe electrical circuit
Connecting an intrinsically safe sensor, actuator, or HART field 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 field devices for an electronic
module.
See also
Operating the ET200iSP with older CPUs (Page 65)
3.5

Use of the ET 200iSP in category M2 of equipment-group I (mining)

Requirements
The following conditions must be fulfilled if the ET 200iSP is used in device group I
(underground mining operations and their overground systems) Category M2:
To avoid ignitable sparks, the power supply PS and the mounting rail of the ET 200iSP must
be packaged in shock-proof packaging for transportation and storage (e.g. for servicing) and
immediately removed from the potentially explosive area.
The enclosure in which the ET 200iSP is installed must be approved for device group I,
category M2.
Observe all other requirements concerning use of the ET 200iSP in the potentially explosive
area.
3.6 Restricted Number of Connectable Electronics Modules
Number of electronic modules
Each ET 200iSP station consists of a maximum of 32 electronic modules. These include digital
and analog electronic modules.
The actual number of electronic modules can be limited by the effective current output of the
power supply PS. It is not permitted to violate this limit value (maximum permitted current).
In the following situation, unrestricted use and combination of the modules in the ET 200iSP
are possible:
ET 200iSP up to 16 electronic modules
52
WARNING
CAUTION
Operating Instructions, 11/2017, A5E00247483-07
ET 200iSP