135
GB
MSL coded version
8 007 898/O369/05-04-04 Operating instruction • MSL cod. © SICK AG • Industrial Safety Systems • Germany • All rights reserved
LEDs on sender unit must light up
Receiver unit
LEDs Cause Test and remedy
green red amber yellow
– – No power Check voltage
– – 1/s Open circuit between terminals 3 and 4 Check passage
(test contact)
– – 8/s 8/s Device in LOCKOUT Operating voltage OFF/ON
(fault condition) Replace MSLS
or contact SICK Service
No power to Check power to MSLE/MSLZ
MSLE/MSLZ Replace MSLE
or contact SICK Service
System misaligned Realign MSLE and MSLS
No light reception Receiver unit MSLE/MSLZ defective Replace MSLE/MSLZ
Test input MSLS open Check testing on MSLZ
Contactors not reaching rest position Check contactor
(no +24V at EDM)
Yellow LED not flashing even +24V permanent at RES input Check RES
though light path is free Operating voltage OFF/ON
(in ”With restart inhibit” mode)
Only in ”Without restart inhibit” mode Check contactors
and with contactor monitoring. For restart:
Contactors have energised. Interrupt light path and release again
+24V permanent at RES input Check RES
(free light path) during operation Operating voltage OFF/ON
System or corner mirror misaligned Realign system or corner mirror
Front screen of MSLE/MSLS/MSLZ or Clean front screen or corner mirror
corner mirror contaminated
8/s 8/s Device in LOCKOUT (fault condition) Operating voltage OFF/ON.
If MSLE/MSLZ not activated as a result,
replace MSLE/MSLZ
or contact SICK Service
Reset not operated Operate and release reset device
Muting indicator lamp defective or Replace muting indicator lamp, Check
Indicator LED incorrectly connected muting lampe output (4 W),
(light received) Check LED-indicator lamp connection
Muting indicator lamp defective or Replace muting indicator lamp, Check
Indicator LED incorrectly connected muting lampe output (4 W),
(no light received) Check LED-indicator lamp connection
Sender unit
LED off
LED flashing
LED
lluminated
LED no
influence
5 s
A
B
A
B
with
MSM
241967_MSLcv_GB_3.p65 10.12.04, 09:40135
Schwarz
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