EUCHNER AS-i Safety Output Relay with four standard inputs - Manual (Page 16)

16 Subject to reasonable modifications due to technical advances Id.-No.: 103573 Issue date - 28.5.2009 EUCHNER GmbH + Co. KG
Kohlhammerstraße 16 • D-70771 Leinfelden-Echterdingen Tel. +49/711/75 97-0 • Fax. +49/711/753316
AS-i Safety Output Relay with four standard inputs
Maintenance
5. Maintenance
5.1 Controlling safe shutdowns
The plant safety engineer is responsible for verifying that the AS-i Safety Output
Relay with four standard inputs works correctly as part of the safety system.
At least once a year it is necessary to verify the safe shutdown by initiating asso-
ciated safety-related sensors or switchs:
Attention!
Press each safety-related AS-i slave and watch the reaction of the output circuits of the
AS-i Safety Monitor.
Attention!
Check the maximum activated time and the total operating time. These values depend
on the PFD value chosen for the total failure probability. Please refer to the information
in chap. Safety relevant data.
After reaching the projected maximum operating time (three, six, or twelve months) the
entire safety system must be checked for proper operation.
After reaching the projected total usage time (20 years) the device must be checked by
the manufacturer concerning its proper operation.