12
EN
SLC 220 IP 69 K
SLG 220 IP 69 K
Operating instructions
Safety light curtain / safety light grid
6. Diagnostic
6.1 LED status information
Transmitter
Receiver
IR power
Restart interlock (manual reset)
External test / blanking
ON
OFF
Signal quality
Function
LED co-
lour
Description
Function
LED co-
lour
Description
IR power
orange
IR transmitter active, signaled by conti-
nuous signal
ON
green
OSSD's ON state system check OK,
activated protection field clear, signaled by
continuous signal
Restart interlock
(manual reset)
yellow
Request signal at input restart inter-
lock, 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 conti-
nuous 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 + Ub (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
transmitter (protection field height and resolution)
- Replace cascaded system transmitter
