The following constraints need to be considered when using the

positioner for SIL safety applications:

• Only the 4 to 20 mA setpoint signal is used for the safety

function, all other inputs or not part of the safety function.

• The proof-test specified within this safety manual (or an

equivalent test as specified for the final SIS safety

function) shall be performed before activating the safety

operation and in periodical cycles as demanded by the

final PFDAVG demands.

• The device is installed per manufacturer’s instructions

• The safety-related system (safety logic solver) must be

able to force the 0 mA signal direct or by using a safety

capable switch on the 4 to 20 mA signal.

• Materials are compatible with the final process conditions.

• The environmental, measurement and application limits

stated within the referenced documentations must be

considered accordingly for the SIL safety application.