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3. Purpose of the product
The 9203Bxxx can be mounted in the safe area or in zone 2 / div. 2 and
transmit signals to zone 0, 1, 2 and zone 20, 21, 22 including M1 mining / Class
I/II/III, Div. 1, Gr. A-G. Ex driver for the control of ON / OFF solenoids, acustic
alarms and LEDs mounted in the hazardous area.
The 9203Axxx can be mounted in the safe area or zone 2 / div. 2 and transmit
signals to non-hazardous area. Driver for the control of ON / OFF solenoids,
acustic alarms and LEDs mounted in safe area.
The 9203 is controlled by an NPN/PNP signal or a switch signal.
Monitoring of internal error events via the individual status relay and/or a
collective electronic signal via the power rail.
The 9203 has been designed, developed and certified for use in SIL 2
applications according to the requirements of IEC 61508.
4. Assumptions and restrictions for use of the product
4.1 Basic safety specifications
Operational temperature range ......... -20...+60°C
Storage temperature range................. -20...+85°C
Power supply type, min. ....................... Double or reinforced
Supply voltage ......................................... 19.2...31.2 VDC
Mounting area .......................................... Zone 2 / Division 2 or safe area
Mounting environment ......................... Pollution degree 2 or better
4.2 Associated equipment
4.2.1
4.2.2
4.3 Failure rates
The basic failure rates from the Siemens standard SN 29500 are used
as the failure rate database.
Failure rates are constant, wear-out mechanisms are not included.
External power supply failure rates are not included.
9203 Solenoid / Alarm Driver
Safety output
The safety output shall be connected to the equipment with a
minimum load of 10 KΩ
Safety input
The safety input signal frequency shall not be higher than 20
Hz, and the pulse length shall not be shorter than 25 ms.
Version No. V5R0
Safety Manual
3
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