SG4E Full Rev01.pdf - Datasensor

FUNCTIONS
7
7.3 RESET
When ESPE locks into failure state user can go back to Normal Operation with a power cycle
or using the activation of RESET function (non critical failures only).
To activate RESET function the 24VDC normally-open button connected to
RESET/RESTART/ALIGN input (pin 3 of M12-12 poles – RX side) has to be kept pressed for
at least 5 seconds in non critical failure state.
For all critical failures a power cycle is necessary.
When in failure state the light curtain can be reset with the procedure explained above except the case
of failure on microprocessor, for which a power cycle is necessary.
Safety light curtain STATUS
failure
normal
24Vdc
RESET
0Vdc
5 sec
Fig. 35 – Reset timings
If the error is not removed, the light curtain goes in lockout failure again.
7.4 EDM
The External Device Monitoring (EDM) function controls external devices by verifying the
OSSDs status.
EDM enabled:
When EDM is enabled in PNP configuration it’s necessary to connect EDM input (pin 6 of
M12-12 poles - RX) to a 24 VDC normally-closed contact of the device to be monitored.
When EDM is enabled in NPN configuration it’s necessary to connect EDM input (pin 6 of
M12-12 poles - RX) to a 24 VDC normally-open contact of the device to be monitored.
NOTE: in normal operation the third led switched on in the user interface indicates that this
function is active.
The next two figures indicates how to connect the EDM input in case of PNP and NPN
configuration.
PNP configuration
NPN configuration
35