SICK GM35

108
8009441/YN36/V3-0/2015-08| SICKOPERATING INSTRUCTIONS|GM35
Subject to change without notice
TROUBLESHOOTING AND CLEARING MALFUNCTIONS
9.3.2 Error messages
The following error messages, which can be displayed on the evaluation unit, refer to the
GM35 SR-unit and the purge air fixtures.
Error message Component/possible causes Clearance
CDOH: No
communication SLV
CAN connection EvU – purge air
fixture SR interrupted
▸ Check CAN connection; disconnect and
reconnect plug, repair if necessary.
CDR: No communication
SLV
CAN connection EvU – purge air
fixture reflector interrupted
▸ Check CAN connection; disconnect and
reconnect plug, repair if necessary.
CO Ampl. Max
N
2
O Ampl. max
CO (N
2
O) -measurement amplifier
above dynamic range
▸ Check alignment;
see page 92.
▸ Clean optical surfaces, page 90/page 91.
▸ Contact Service.
CO com.
(N
2
O com)
No connection between CO
2
/H
2
O
module with CO (
N
2
O) module
▸ Check cable connection is secure with correct
seat; repair it in the GM35 when necessary.
▸ If the error cannot be cleared: Contact Service.
CO CUVETTE com.
N2O CUVETTE com
No connection of CO (N
2
O) module
with CO (N
2
O) cell motor
▸ Contact Service.
CO CUVETTE range
N2O CUVETTE range
• CO (N
2
O) duct in reference cycle
outside expected range
• CO (N
2
O) cell may be leaking
▸ Exchange the measurement module or
contact Service.
CO div. Zero
N
2
O div. zero
CO (N
2
O) module adjustment data
invalid
▸ Contact Service.
CO EEPROM
N
2
O EEPROM
Invalid parameter set for
CO (N
2
O) module
▸ Carry out zero adjust on GM35;
see page 79.
▸ Contact Service.
CO Motor fault
N
2
O Motor fault
Motor fault on CO (N
2
O) filter wheel ▸ Contact Service.
CO No signal
N2O No signal
• CO(N
2
O)- signals too low;
measurement not possible
• Dust content too high
• CO(
N
2
O) detector or IR source
defective
H
2
O-, CO
2
measuring ducts continue
to run
▸ Check contamination; clean optical interfaces
(
see page 90f).
▸ Check optical alignment,
see page 92.
▸ Exchange IR source or measurement module,
or contact Service.
CO Sig. High
N2O Sig. High
CO(N
2
O) signals distorted,
H
2
O, CO
2
measuring ducts continue to
run
▸ Carry out zero adjust,
see page 80.
CO temp. detec.
N2O temp. detec.
CO(N
2
O) detector temperature outside
tolerance
▸ Contact Service.
El too hot SLV Electronics too hot ▸ Improve SR-unit cooling system.
Filter com. No connection between CO
2
/H
2
O
module and motor of check filter
▸ Contact Service.
H2O Ampl. Max CO
2
/H
2
O measurement amplifier
above dynamic range
▸ Check alignment;
see page 92.
▸ Clean optical surfaces, see page 90/page 91.
▸ Contact Service.