Section 7
TROUBLESHOOTING-SUPERVISOR
34
Table 7-1 Alarms (LS20 Compressors)
Start Run
Sensor Type Limit Delay Delay Check (*) Comment
System Check On Fault 0 0 0 Constantly Factory Setup Check Sum Fail
I/O Module Check On Fault 0 0 0 Constantly Communication failure I/O Module
Com Module Check On Fault 0 0 0 Constantly Communication failure Com Module
Motor Module Check On Fault 0 0 0 Constantly Communication failure Motor Mod
D_1 On Fault 0 1 1 Constantly Motor overload
D_2 On Fault 0 1 1 Constantly Aux motor overload
D_3 On Warn 0 5 5 When Running Air filter maintenance
D_4 On Fault 0 5 5 When Running Low water pressure
E_1 On Fault 0 0 0 Constantly E-Stop Push Button
E_2 On Fault 0 0 0 Constantly Auxiliary E-Stop
AIR FILTER MAINT. Maint Warn 0 0 0 If Enabled Air Filter change due
OIL ANALYSIS Check Maint Warn 0 0 0 If Enabled Oil Analysis due
OIL CHANGE Check Maint Warn 0 0 0 If Enabled Oil change due
OIL FILTER MAINT. Maint Warn 0 0 0 If Enabled Oil filter change due
SEPARATOR CHANGE Maint Warn 0 0 0 If Enabled Separator change due
dP_1 High Warn 10 5 55 Over Min Psi Separator maint P1-P2
dP_2 High Warn 20 5 2 When Running Oil filter maint P4-P3
dP_3 Low Fault 1 5 55 Running Loaded Low Oil psi P3-(P1/2.5)
dP_3 Low Fault 1 5 55 Running Unloaded Low Oil psi P3-(P1/3.5)
dP1Max High Fault 0 5 0 When Running dP1Max = P1Max - P1
dP1Max High Warn 3 5 0 When Running dP1Max = P1Max - P1
P_1 High Inhibit 5 0 0 At Start High sump psi at start
P_1 Low Fault 5 5 0 When Running Immediate Fault
P_1 High Fault 500 0 0 Constantly Sensor failure fault
P_2 High Fault 500 0 0 Constantly Sensor failure fault
P_3 High Fault 500 0 0 Constantly Sensor failure fault
P_4 High Fault 500 0 0 Constantly Sensor failure fault
T_1 Low Fault -40 0 0 Constantly Sensor failure fault
T_1 High Warn 225 5 30 Constantly Delayed for temp spikes
T_1 High Fault 235 5 30 Constantly Delayed for temp spikes
T_1 High Warn 245 0 0 Constantly Immediate Warning
T_1 High Fault 255 0 0 Constantly Immediate Fault
T_1 High Fault 500 0 0 Constantly Sensor failure fault
T_2 Low Fault -40 0 0 Constantly Sensor failure fault
T_2 High Warn 225 5 30 Constantly Delayed for temp spikes
T_2 High Fault 235 5 30 Constantly Delayed for temp spikes
(*) In the ‘Check’ column above, alarms are checked:
Constantly - if machine running or stopped
When Running - if machine is running
If Enabled - if parameter is non-zero
At Start - will not allow start if alarm present
Over Min Psi - machine is loaded and above min load pressure
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