Table of Contents
Advertisement
Section 5
MAINTENANCE AND TROUBLESHOOTING
5.3 MESSAGE DISPLAY DEFINITIONS
In addition to programming prompts, the 20-charac-
ter electro-luminescent display provides information
regarding machine status and trouble conditions.
MESSAGE DISPLAY DEFINITIONS
MACHINE STATUS MESSAGES
MANUAL SHUTDOWN
STANDBY
ON LOAD
OFF LOAD
STOP MODE
5.4 TROUBLE INDICATION SETPOINTS
CONDITION/DISPLAY
P1 High Discharge Pressure Shutdown
HIGH PRESSURE P1
P1 High Discharge Pressure Prealarm
HIGH PRESSURE P1
Failure to Run, P1 Pressure Loss
PRESSURE LOSS
12
These messages can be displayed in any one of five
languages; English, French, Spanish, German or
Italian. The following table explains what each mes-
sage means as it relates to the compressor.
EXPLANATION
The machine is ready to be started. Machine
control is powered up; permissives are made;
machine has been stopped via the ON/OFF
pad, the remote start/stop contact (if the
RUNNING LED is flashing), or a computer com-
mand through the RS232 port.
The machine is in AUTOMATIC mode and a
start was initiated, but either the line pressure
P2 is higher than the LOAD setpoint or sump
pressure P1 is higher than 14.5 PSIG. Machine
start will occur when these pressures are satis-
fied.
The compressor is running and P2 is less than
the UNLOAD setpoint. The LOAD/UNLOAD
solenoid valve relay (output J10/50-51) is en-
ergized. The compressor is attempting to meet
the system air demand.
The compressor is running and P2 has exceed-
ed UNLOAD setpoint, but has not dropped
below the LOAD setpoint (DIFF PRESS P2). The
UNLOAD solenoid valve relay is deenergized
and the compressor is unloading.
The machine is in AUTOMATIC mode and a
stop command has been initiated either via
the ON/OFF pad or the remote STOP/START
contact (J1/1-2). This mode runs the com-
pressor for 10 seconds with the LOAD/UNLOAD
valve relay deenergized before stopping.
CAUSE
Default is 135 PSIG, factory settable for
high pressure machines.
50 - 200 PSIG
Machine will shut down and must be cleared
and reset by pressing ON/OFF once before
restart is possible.
Indicates at 98% of Max Press P1.
Since no run contact is used to indicate run
status, the Supervisor examines P1 pressure
to see if a minimum of 14.5 PSIG is being
produced when the RUN output is energized.
Reading is overridden for 1 minute at startup.
Advertisement
Table of Contents
