‘Com’ Key Principles
SFC interlocks are supplied as standard with one key trapped and one key free. However, for commissioning purposes, SFC interlocks can be supplied with factory-fitted ComKeys that permits the random operation of the interlocks, irrespective of the coded logic of the interlock system. ComKey is a ‘one-time-only’ design facility feature. Once the key is removed after all testing/commissioning tasks are completed, it cannot be re-used – The installed interlock will only then accept its dedicated coded key for normal operations.
All ComKey systems must be specified at the time of order placement, as each lock is assembled with the system pre-installed.