14
Operating instructions
Safety light curtain/safety light grid
SLC440AS
SLG440AS
EN
TRANSMITTER LED
Status LED
Description
Transmitting
On
Standard operation, transmitter active
flashing
Configuration error
Information
flashing
Beam coding A is active
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, an
error number eg E2 is displayed at the receiver Each fault display is followed by a one-second delay
Status display Fault feature
Action
Supply voltage U-Aux
U-Aux = 24 VDC+/- 10%, check voltage source and primary voltage, note: after the
fault message E2 has been displayed three times, a reset is executed
Errors at the internal OSSD outputs
Internal error:
Short-circuit or cross-wire short at internal OSSD
Beam blanking
Check the blanking area(s) of fixed or floating objects with the selected parameter
setting, fault elimination - repeat configuration in the parameter setting, possibly
adjust P 1, P 2, P 3
Configuration error in parameter setting
Check parameter setting and save/accept with "S" delete/clear with "C"
System error
Restart the system, if E 7 display persists, exchange components
The error display is reset after elimination of the error cause and after the receiver has been switched back on
The error indication displays a 3-digit system error code for every 10th display
6.3 AS-i diagnostics indication
The AS-i LED indications in the end cap on the connecting side have
the following meaning (to EN 50295):
AS-i LED
(Duo-LED)
Meaning
Green
AS-i data transmission
Red
No data transmission or slave address = 0
Alternate flashing
green / red
Internal device error / periphery error (FID)
detected
6.4 Read-out of the parameter ports
The parameter port P0 to P3 of an AS-i slave can be read out through
the control interface of the AS-i master (see component description) by
using the "Write parameter" instruction (with hexadecimal value F) This
(non-safe) diagnostic information from the reflected parameters or the
answer to a "Write parameter instruction" can be used by the user for
diagnostic purposes or for the control programme
Diagnostic information P0 … P3
Parameter bit
Condition = 1
P0
-
P1
Poor beam quality
P2
-
P3
Internal device error detected (FID)
The warning message indicates a soiled or incorrectly adjusted BWS
The warning message indicates a soiled or incorrectly adjusted AOPD
6.5 Diagnostic signal periphery error (FID)
An internal device error is transmitted as "periphery error" to the control
system through the AS-i Master
A "periphery error" (FID input of the AS-i chip) is signaled by the
alternating red and green flashing of the AS-i duo LED on the AS-i
device
7. Set-up and maintenance
7.1 Check before start-up
Prior to start-up, the following items must be checked by the
responsible person
Wiring check prior to start-up:
1 For the auxiliary voltage supply, a 24 VDC PELV unit must be used
(refer to technical data)
A power downtime of 20 ms must be bridged
2 Presence of a voltage supply with correct polarity at the SLC/SLG
3 The connecting cable of the transmitter is correctly connected to the
transmitter and the connecting cable of the receiver correctly to the
receiver
4 If two or more SLC/SLG units are used within close range to each
other, an alternating arrangement must be observedAny mutual
interference of the systems must be prevented
Switch the SLC/SLG on and check the operation in the following
way:
The component performs a system test during approx 2 seconds
after the operating voltage has been switched on (indication through
7-segment display) After that, the outputs are enabled, if the protection
field is not interrupted The LED "OSSD ON" at the receiver is on
In case of incorrect functionality, please follow the instructions
listed in the chapter Fault diagnostic
