Z 8 Posts in this encyclopedia category
Time relay
The product range of timing technology includes timing relays (relays with fixed timing behaviour) with variable timing functions and conforms to various international standards, including IEC/EN...
Guard locking device
Device to keep a guard in the closed position and connected to the control system in such a way that the machine cannot run if the guard is not closed and kept closed and the guard is kept closed...
Consent switch
The enabling switch must be operated manually so that the protective effect of the guards can be cancelled. It alone must not be used to initiate hazardous conditions. A "second, conscious"...
Forced guided contacts
Positive guidance of contacts means that no NC contact may close if any NO contact does not open. No normally open contact may close if a normally closed contact does not open. This applies to...
Forced opening
Execution of contact separation as a direct result of a specified movement of the operating part of the switch over non-springing parts. [IEC / DIN EN 60204-1]
Two-hand circuit
Device requiring at least simultaneous operation by both hands to initiate and maintain the operation of machinery as long as a hazard exists, so as to achieve a measure of protection only for the...
Cyclic test
Before or at the next request of the safety function, an error is automatically detected, i.e. at the latest at each switch-on cycle of the evaluation unit.