Ingersoll-Rand NIRVANA IRN110K-OF, Operation And Maintenance Manual, Page: 76 / 94

9.0 OPERATING INSTRUCTIONS
IRN37–160K–OF & IRN50–200H–OF
http://air.irco.com
72
9.15 ALARMS
When an Alarm occurs, a large exclamation mark in a
triangle will flash on the display screen. The display
message will indicate what caused the Alarm.
The compressor will stop and cannot be re–started
again until the alarm condition no longer exists and the
alarm message reset.
Pressing the STATUS button will display the STATUS
screen. The presence of the ALARM button indicates
that an Alarm condition still exists. Alarm Status is the
list of machine operating conditions that existed at the
time of the Alarm.
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 ALARM button will return the
display to the Alarm screen and the RESET button.
The Alarm needs to be reset by the operator by
pressing the RESET button twice. Any exceptions to
this are explained in the alarm descriptions.
–ALARM STATUS–
100 100
PSI
PACKAGE DISCH
PRESSURE
100 psi
STOPPED BY
ALARM
PACKAGE DISCHARGE
TEMP
103
_ F
ALARM MAIN MENU
The possible Alarm messages are as follows;
BLOWER MOTOR OVERLOAD – Will occur if a
blower motor overload relay contact opens.
REMOTE STOP FAILURE – Will occur if the REMOTE
START/STOP option is enabled, the remote stop
button remains open and either start button is pressed.
REMOTE START FAILURE – Will occur if the unit is
started by the remote start button and the button stays
closed for 7 seconds after the unit starts.
SENSOR FAILURE – Will occur when a sensor is
recognized as missing or broken. The sensors affected
by this alarm are 1AVPT, 2APT, 3APT, 4APT, 6OPT,
1ATT, 2ATT, 3ATT, 4ATT, 5OTT. The sensor should be
displayed along with the sensor failure message. The
sensor failure message shall follow the following
format: SENSOR FAILURE 4APT.
EMERGENCY STOP – Will occur when the
EMERGENCY STOP button is engaged.
VSD FAULT – The VSD fault is read from the drive. The
Intellisys will read the status menu of the variable speed
drive. If a fault condition is returned in the status
information, the Intellisys will issue a VSD FAULT alarm
and display the number of the fault condition.
CHECK MOTOR ROTATION – This will occur if the
Intellisys reads a negative speed from the VSD when
starting.
VSD COMMUNICATION FAILURE – This will occur if
the Intellisys does not receive a response from the VSD
when requesting information. This alarm will take about
8 seconds to occur.
VSD INITIALIZATION FAULT – Will occur if the
Intellisys is unable to establish communications with
the VSD after a power up.
HIGH I/C CONDENSATE – This will occur if COND
LEVEL INSTALLED is YES and the High Condensate
Level switch remains on for 1 minute.
HIGH INTERCOOLER PRESSURE – Will occur if
2APT is greater than 47 psig / 3,25 bar.
HIGH 2ND STAGE PRESSURE – Will occur if 3APT is
greater than 10 psig / 0,7 barg greater than the
immediate stop pressure
LOW BEARING OIL PRESSURE – This will occur if
6OPT is less than 17 psi / 1.2 bar and the unit is running.
HIGH 1ST STAGE TEMPERATURE – This will occur
if 2ATT is greater than 482 _ F / 250 _ C.
HIGH 2ND STAGE TEMPERATURE – Will occur when
4ATT is greater than 520
_
F / 271
_
C.
The alarm for N37–45K–OF & N50–60H–OF will occur
at 536 _ F / 280 _ C.
HIGH I/C AIR TEMPERATURE – This will occur if
temperature sensor 3ATT is greater than 140 _ F / 60 _ C.
HIGH BEARING OIL TEMPERATURE – This will
occur if temperature sensor 5OTT is greater than
170 _ F / 77 _ C.
2ND STAGE OVER RATIO – This alarm will occur if
(3APT+14.5psi )/(2APT + 14.5psi) is greater than 5.