Function And Features; Product-Independent Requirements; Product-Dependent Requirements - IFM Electronic efector 110 GI5002 Instrucciones Operativas

2. Function and features

The fail-safe switch detects metals without contact.
The safe state is the no-current state (output stage switched off).
The fail-safe switch corresponds to category 3 according to EN 954-1
or requirement class 4 according to DIN V 19250/DIN V 19251 or DIN
V VDE 0801.
3. Requirements for the hardware configuration
For using the inductive fail-safe switch GI5002 the following must be
taken into account:

Product-independent requirements

The safety requirements of the respective application must correspond
to the requirements stated in these instructions.
The specified operating conditions must be complied with.
The principle of normally closed operation must be applied to all ex-
ternal safety circuits connected to the system.
By taking administrative measures in the application it must be en-
sured that the mounted fail-safe switch is subjected to a self-test with-
in a period of 24 hours (intermittent operation).
This is achieved by
•
switching the supply voltage off and on again (≥ 0,1 s)
•
or by undamping the sensor for a sufficiently long time (≥ 3 s)
•
or by deactivating the clock input signal (≥ 3 s).

Product-dependent requirements

In case of faults within the fail-safe switch which result in the defined
safe state, measures have to be taken which maintain the safe state
when the complete control system continues to be operated.
Damaged units are to be exchanged.
12