EN-15
80446339
Rev B
EN
Service warnings
SERVICE
- Service warnings occur when the compressor has operated a
certain number of hours, based on the total hours. Service warnings can have
multiple levels, depending on the service level selection.
This will be set prior to the compressor being shipped from the factory. When
a service warning occurs, contact your local
Ingersoll Rand
service provider.
Initial check trips:
The following trips will only occur when the compressor is not running. These
trips are related to high temperature, power loss, and sensor calibration. They
will have the same display mode as other trips.
HIGH AIREND DISCH TEMP
- Will occur if the airend discharge temperature is
greater than 95% of 109° C (228° F).
CHECK SETPOINTS
- Will occur if the controller has determined that some of
the data stored in memory contains unacceptable values.
INVALID CALIBRATION
- Will occur if the sensor zero value is -10% to +1% of
its scale. See Sensor Calibration.
Trips
Figure 12: Trip Screen
When a trip occurs, a large exclamation mark in a triangle will flash on the
display screen. The display message will indicate what caused the trip.
The compressor will stop and cannot be re-started again until the trip
condition no longer exists and the trip message reset.
Pressing the STATUS button will display the STATUS screen. The presence of
the TRIP button indicates that a trip condition still exists. Trip Status is the list
of compressor operating conditions that existed at the time of the trip.
The name and value of each of the items listed can be seen by moving the list
up and down using the arrow buttons. Pressing the TRIP button will return
the display to the trip screen and the RESET button.
The trip needs to be reset by the operator by pressing the RESET button
twice. Any exceptions to this are explained in the trip descriptions.
The possible trip messages are as follows;
EMERGENCY STOP
- This will occur if the emergency stop button is engaged.
The button shall be disengaged before the trip can be cleared.
BLOWER FAULT
- This will occur if a blower fault is sensed.
HIGH AIREND DISCH TEMP
- This will occur if the airend discharge
temperature is greater than 109° C (228° F).
REMOTE START FAILURE
- This will occur if the remote start button is pressed
after the compressor is running or if the remote start button remains closed.
REMOTE STOP FAILURE
- This will occur if the remote stop button remains
open and either start button is pressed.
SENSOR FAILURE
- This will occur if a sensor is recognized as missing or
broken.
VSD FAULT
- The VSD fault is read from the drive. The controller will read the
status menu of the variable speed drive. If a fault condition is returned in the
status information, the controller will issue a VSD FAULT trip and display the
number of the fault condition.
STOP FAILURE
- This will occur if the compressor should be stopped but the
motor is still running above minimum speed 4 seconds after the stop signal
is given.
HIGH START PRESSURE
- If the sump pressure is above 6.9 bar (100 psi)
when the compressor starts, the controller will open the blowdown valve
during the first few seconds of starting ( to 7 seconds). If the sump pressure
does not fall to 6.9 bar (100 psi) during that time period, this shutdown will
occur.
CHECK MOTOR ROTATION
- This will occur if the controller reads a negative
speed from the VSD when starting.
VSD COMMUNICATION FAILURE
- This will occur if the controller does not
receive a response from the VSD when requesting information. This trip will
take about 8 seconds to occur.
VSD INITIALIZATION FAULT
- Will occur if the controller is unable to
establish communications with the VSD after a power up.
LOW SUMP PRESSURE
- Will occur if the compressor is operating at or above
the minimum speed and the sump pressure drops below 1 bar (15 psi) for
15 seconds.
REPLACE COOLANT FILTER
- This will occur if the coolant filter is blocked
and requires changing.
INCORRECT VSD TYPE
- Will occur at power up if the VSD type does not
match the size of the compressor.
CHECK INCOMING POWER
- This will occur if the compressor should be
running and the AC input voltage, as read from the VSD, falls below 100 VAC.
There is a delay of 2 seconds on this trip in case the power quickly returns.
Phase monitor can also cause this trip.
HIGH INTERSTAGE PRESSURE
- If the interstage pressure is over 7 bar
(100 psi) while the compressor is running and the compressor is a two stage
compressor.
HIGH COOLANT FILTER PRESSURE DROP
- Occurs if the compressor has
been running for at least 7 seconds, the compressor is warm, already has a
change coolant filter warning, the motor is running, and the coolant filter
pressure drop is greater than 2.5 bar (5 psi).
HIGH INLET VACUUM
- Occurs if the compressor is running loaded, the
motor is running, and the inlet vacuum is greater than 0.1 bar (1.8 psi)
(vacuum).
HIGH SUMP PRESSURE
- Occurs if the compressor is running, the
compressor is warm, and any one of the three following conditions exist.
1. The sump pressure is above the maximum offline pressure by
25 psi.
2. The separator pressure drop is measured to be more than 25 psi
and the package discharge pressure is at least 65 psi.
. The sump pressure is above 170 psi.
110812.16.23
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