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SICK MSL
8 007 653/09-04-01 Technical Description • MSL © SICK AG • 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
– –
Sender inactive
Change MSLS
Open circuit between terminals 3 and 4
Check passage
(test contact)
Device in LOCKOUT
Operating voltage OFF/ON
(fault condition)
Replace MSLS or contact SICK Service
– –
No supply voltage
Check voltage
– – 8/s 8/s
Device in lockout
Operating voltage OFF/ON
Replace MSLS or contact SICK Service
– – 1/s
Break between terminal 3 and 4 (test contact) Check continuity
No supply voltage at MSLE/MSLZ
Check voltage at MSLE/MSLZ
Replace MSLE or contact SICK Service
System misaligned
Realign MSLE and MSLS
Receiver unit MSLE/MSLZ faulty
Change MSLE/MSLZ
(no light received)
Test input MSLS interrupted
Check testing
System or corner mirror misaligned
Realign system or corner mirror
Front screen of MSLE/MSLS/MSLZ
Clean front screen and/or corner mirror
and/or corner mirror dirty
Exit window and/or corner mirror dirty
Clean front screen and/or corner mirror
Device in LOCKOUT
Operating voltage ON/OFF, if the green LED still
remains unlit, change MSLE/MSLZ
or contact SICK Service
EDM contacts not operating
Check NC relay k 1 and k 2
24 V DC permanently supplied at RES
Check RES
input during operation
Operating voltage OFF/ON
Sender unit
up
to
9652xxxx
LED off
LED flashing
LED no influence
yellow
amber
yellow
amber
red
green
9 Diagnosis elements
9 Diagnosis elements
LED illuminated
Sender unit
from.
9652xxxx
Note:
There are two LED functions of the sender unit:
‡
up to serial number 9 652 xxx and
‡
from serial number 9 701 xxx