Purpose Of The Product; Assumptions And Restrictions For Use Of The Product; Basic Safety Specifications; Associated Equipment - PR 9203 Manual

3. Purpose of the product

Universal Ex driver for the control of solenoids etc. with various Ex data by
way of three built-in Ex barriers.
The device can be mounted in the safe area and in zone 2 / div. 2 and
transmit signals to zone 0, 1, 2, 20, 21 and 22.
Ex driver for the control of ON / OFF solenoids, acou s tic alarms and LEDs
mounted in the hazardous 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 Safety output

4.2.2 Safety input

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
The safety output shall be connected to the equipment with a
minimum load of 10 KΩ
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. V3R0
Safety Manual
3