Cosmo LS-R700 - ERROR 12 Air Operated Valve Error 2

9 Troubleshooting 113
9
3.7 ERROR 12 Air Operated Valve Error 2
Timing:
At the end of Pressurization (CHG)
Criteria:
Auto-zero of PS is smaller than 1% of the sensor range at the end of CHG
Probable Cause
Treatment
Pilot pressure fluctuates or the pressure setting is
inappropriate.
Adjust the pilot pressure between 400kPa and 700 kPa.
Avoid using air tools branching off the pressure source of the LS-R700 to
supply an stable air.
Setting up a dedicated pressure source for the LS-R700 is
recommended.
Pressure source is disconnected.
Check the pressure source and the regulator setting.
Test pressure is too low for high pressure models, H20.
Adjust the test pressure within the test pressure range.
Malfunction of the test pressure sensor (PS), solenoid
valve or air-operated valve.
Contact Cosmo for repair.
Output Signal Timing Chart
PIN#
Function TYPE WAIT DL1 PCHK PCHG PEXH CHG BLW EXH END WAIT
Standard D-SUB
1B
18
STAGE #0
NO
2B
17
STAGE #1
NO
3B 16 ERROR NO
5B
14
PASS
NO
6B 13 UL FAIL NO
9B
36
BUSY
NO
10B 35 END NO
12B
33
LL2 FAIL
NO
13B 32 LL FAIL NO
14B
31
UL2 FAIL
NO
▼ ▼ At the end of PCHG or CHG
When the error occurred in PCHG, stages only in grey are applicable
but when it occurred in CHG stage, the stages in shadowed are also
applicable as well.
NOTE