13
EN
SLC 420 IP 69 K
Operating instructions
Safety light curtain
Receiver
LED
Status LED
Description
OSSD ON
On
Protection field clear
flashing
Diagnostic mode active
OSSD OFF
On
Protection field interrupted, system or configuration error
flashing
Diagnostic mode active, error output refer to Fault diagnostic table
Restart
On
Start or restart interlock (manual reset) active, signal expected at output WA
Signal reception
ON/flashing
Signal reception too low, check alignment and installation height between transmitter and receiver
Cleaning the black profile cover
OFF
Alignment between transmitter and receiver OK
Blanking
1 flash
Fixed blanking of the protection field(s)
2 flash
Floating blanking, max 1 beam
3 flash
Variable blanking, more beams
4 flash
Floating (max 1 beam) and fixed blanking of protection field(s)
5 flash
Variable (multiple beams) and fixed blanking of protection field(s)
Multifunction
flashing
Beam coding A is active
Transmitter
LED
Status LED
Description
Transmitting
On
Standard operation, transmitter active
flashing
Configuration error
Status
flashing
Beam coding A is active
6.2 Fault diagnostic
The light curtain 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 restart
continuous flashing
Wiring error for function selection
(Restart interlock (manual reset), automatic
mode)
Check connection at the receiver, bridge 1 or
bridge 2 must be wired (refer to Wiring)
1 flash
Error at sensor receiver
Replace receiver
2 flash
Error contactor control OFF
Check connections at contactor control input, refer to
Wiring, check wiring of the auxiliary contacts
3 flash
Error contactor control ON
Check wiring at contactor control input, short-circuit at +UB and
mass Power reset after fault rectification
4 flash
Errors at the OSSD outputs
Check the wiring of the outputs, OSSD for short-circuit at +UB and
mass
5 flash
Error configuration data
Check components in case of cascading, check configuration settings
by means of the NSR-0801 BUS converter
6 flash
Error blanking
The receiver has detected blanked beams as beams without inter-
ruption, ie locking Check the configuration settings by means of the
NSR-0801 BUS converter, repeat the teach process with blanking
6.3 Extended diagnostic
By means of the optional SLC 420 configuration software and the
NSR-0801 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 diagnostic mode to protective mode is automatically real-
ised after Power Reset, when the BUS converter is no longer integrated
and the connecting cable of the sensor is reconnected
