Chapter 8
Sender
Display
Yellow status LED on
sender not lit
7-segment-display:
E, flashing
o.
H *)
(only with M 2000 and
Host C 2000 in cascade)
L(1), alternating
L(4), alternating
Coding *)
Table 8-2: Troubleshooting table, sender, C 2000, M 2000
*) = Display only for a few seconds after power-on
Receiver
Display
Amber LED
7-segment-display:
O, displayed for max. 2
minutes
1
Table 8-3: Troubleshooting table for receiver of C 2000, M 2000
8008684/YJC8/2015-03-30
2 7 6
8 008 684/RI57/2007-11-28
Troubleshooting
Meaning
The unit has no power
System error
Cyclic system test, sender
inactive
High transmission power,
2 ... 25 m
Invalid beam coding
Cascadable version:
Connection fault!
Adress 1
Adress 2
Adress 3
Meaning
Weak light beam
No sender synchronisation Sender/Receiver
Sender synchronised,
but remaining light beams
broken
Multibeam Photoelectric Safety Switch M 2000
Cause, test
Check power
Defective photoelectric
switch
Test input open (0 V)
H-Range (24 V)
Check connection for
beam coding on sender
and receiver
Check connection cable
Cause, test
Exit window of sender/
receiver is dirty
misaligned
Sender/Receiver
misaligned
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Operating Instructions
Safety Light Curtain C 2000
Remedy
Check wiring, measure
voltage
Replace photoelectric
switch
Connect test input to 24 V
Wire the same coding on
the sender and receiver,
then switch off and back on
again
Replace connection cable
Remedy
Clean exit window
Align sender and receiver
Align sender and receiver