Operating Manual
3KXG165002R4201_2021_04
ABB PROPRIETARY INFORMATION 62
GLA531 Series LGR-ICOS™ Gas Analyzer
Table 17 Channel 6 and AI1+ Gas Analyzer Problem Descriptions
Alarm
(mA)
Volts Detected Problem
Alarm 4 ± 0.1 0
Laser A and/or B goodness of fit is poor
Alarm 5 ± 0.1 0.312 Pressure is not in operating range
Alarm 6 ± 0.1 0.625 HD Space is low, deleting oldest files
Alarm 7 ± 0.1 0.937 Mirror health has degraded, clean mirrors
Alarm 8 ± 0.1 1.25
Laser A and/or B peak position is outside of control range, contact
customer support
Alarm 9 ± 0.1 1.56 Laser power drop exceeded 20% from date of install
Alarm 10 ± 0.1 1.875 Maintenance is needed on system now
Warning 12 ± 0.1 2.5 Laser A and/or B goodness of fit is not optimal
Warning 13 ± 0.1 2.812
Pressure is noisy
Warning 14 ± 0.1 3.125
HD Space is low
Warning 15 ± 0.1 3.437
Mirror health is degrading, clean mirrors soon
Warning 16 ± 0.1 3.75
Laser A and/or B peak position is moving very fast
Warning 17 ± 0.1 4.06
Laser A and/or B power is degrading, contact customer support
soon
Warning 18 ± 0.1 4.375
Maintenance is needed on system soon
No issue 20 ± 0.1 5
No warning/alarm
Two-Port Solenoid Driver-Board
The two-port solenoid driver-board controls the exhaust pump and the inlet solenoid valve.
• CH-1 controls the inlet solenoid valve directly (see Figure 54).
• CH-2 controls the exhaust pump through a solid-state relay (SSR).
Each channel has an override switch selector (see Figure 51). Position both switched to LOGIC control for
normal operation.