Datalogic SG4-14-030-OO-P, Instruction Manual

Page: 44 / 108

SG4 EXTENDED INSTRUCTION MANUAL
36
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.
5 sec
normal
failure
0Vdc
24Vdc
Safety light curtain STATUS
RESET
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.
The EDM function cannot be used in NPN configuration.
NOTE: in normal operation the third led switched on in the user interface indicates that this
function is active.
The figure below shows how to connect the EDM input.
PNP
CONFIGURATION