schmersal SLC 220, Руководство по эксплуатации, Страница: 12 / 14

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Operating instructions
Safety light curtain / safety light grid
SLC 220
SLG 220
EN
6. Diagnostic
6.1 LED status information
Transmitter Receiver
IR power
Restart interlock (manual reset)
External test / blanking
ON
OFF
Signal quality
Function LED colour Description Function LED colour Description
IR power orange IR transmitter active, signaled by continuous
signal ON green OSSD's ON state system check OK,
activated protection field clear, signaled
by continuous signal
Restart inter-
lock (manual
reset) yellow Request signal at input restart interlock, signaled
by continuous signal OFF red OSSD's OFF state, active protection
field interrupted - continuous signal;
connection with NSR-0700 or diagnostic
flag - flashing
External test /
blanking green Blanking active, signaled by flashing, test signal
active, signaled by continuous signal Signal
quality orange Insufficient signal reception, signaling
depending on the signal quality
6.2 Fault diagnostic
The light grid performs an internal self-test after the operating voltage is switched on and the protection field is enabled. When a fault is detected, a
corresponding flashing pattern is emitted at the receiver through the LED OSSD OFF (red). Every fault emission is followed by a one-second pause.
LED OSSD OFF Fault feature Action
OSSD OFF and LED re-
start continuous flashing If the function contactor control is activated and no state
change has been detected at the contactor control input
after enabling of the OSSD. - Check contactor control connection
- Check the connected contactor for closed contact (if
OSSD ON - contactor control input must show GND level,
if OSSD OFF - contactor control input must show +24V)
- Switch-on only after POWER OFF/ON
1 flashes Receiver configuration error or communication error - Check transmitter and receiver configuration
- reparameterize (factory setting) with additional software
- Replace receiver
2 flashes Transmitter configuration error or communication error - Check transmitter and receiver configuration
- Check transmitter/receiver protection field
- Check transmitter/receiver connection
- Replace transmitter
3 flashes Error during the OSSD test
Voltage is detected during the OSSD test, although the
OSSD are in OFF state. - Check the connecting cables of the OSSD outputs for
short-circuits at + U
b
(cables, connected devices)
- Replace receiver
4 flashes The cascaded receiver unit is not correctly connected or
is defective. - Check connection and configuration of the cascaded
receiver (protection field height and resolution)
- Replace cascaded system receiver
5 flashes The cascaded transmitter unit is not correctly connected
or is defective. - Check connection and configuration of the cascaded trans-
mitter (protection field height and resolution)
- Replace cascaded system transmitter
6.3 Extended diagnostic
By means of the optional configuration software and the NSR-0700
BUS converter, an extended diagnostic can be executed. The software
provides the status information of the component and can represent the
individual light lines. This feature enables an optimal adjustment of the
light curtain. The diagnostic mode is signalled by the OSSD ON and
OSSD OFF LED‘s at the receiver. In diagnostic mode, protective mode
is disabled, the ODDS outputs being locked. The change from diagnos-
tic mode to protective mode is automatically realised after Power Reset,
when the BUS converter is no longer integrated and the connecting
cable of the sensor is reconnected.