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Troubleshooting
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© SICK AG • Subject to change without notice • 8016441/2013-11-22
Display
Meaning/Possible causes
Troubleshooting
ErrHv
Receiver unit is faulty.
Device is not ready for operation, contact
customer service (
a list of representatives
can be found on the back page
).
LsrOff
Laser has been switched off for commissi-
oning.
Device F1 (ISD400-7xx1): Switch on laser:
Press
.
Table 15: Error messages
10.3 Possible error indicators
Problem
Possible causes
Troubleshooting
Green receive indicator and
display are flashing rapidly, no
signal
Two devices with the same frequency (F1/
F1; F2/F2), no frequency pair mounted.
Mount devices with different frequencies
(F1/F2).
Laser switched off, device not in operating
mode
Device F1 (ISD400-7xx1): Switch on laser:
Press
.
Minimum mounting distances not observed. • When using multiple sensors, observe
the minimum mounting distances
→
See
Receive indicator off
No power supply/hardware faulty
• Check connection.
• Replace device.
No RUN symbol in the display
No Ethernet cable connected.
No optical connection to communication
partner available.
• Check cabling.
• Check Ethernet settings on opposite side.
• Check alignment.
Table 16: Possible error indicators
10.4 Disposal
Please observe the following when disposing of the device:
• Do not dispose of the device along with household waste.
• Dispose of the device according to the applicable regulations in your
country.