Sullair SUPERVISOR CONTROLLER Series Instruction Manual page 31

CODE FAULT
3
Ground Fault
(Earth Fault)
5
Charging Switch
6
Emergency stop
Saturation trip
7
8
System fault
9
Undervoltage
10
Input line
supervision
Output line
11
supervision
13
Under-
temperature
14
Over-temperature
15
Motor stalled
16
Motor
over-temperature
22
EEPROM
checksum fault
POSSIBLE CAUSE
Current sensing indicates that the sum of
motor phase currents is not zero.
• insulation failure in motor or motor cables
The charging switch was open when the
START command was been given due to:
• faulty operation
• component failure
An Emergency stop signal was received from
one of the digital inputs
• defective component
• motor or motor cable short
• component failure
• faulty operation
Note: exceptional fault data record, see the
Active Fault Menu and Fault Time Data
Record for more information
DC-link voltage is less than the minimum
safe operating voltage limit.
• most probable cause: too low a supply volt-
age
• variable speed drive internal fault
Input line phase is low or missing.
Current sensing indicates that there is no
current in one motor phase.
Heatsink temperature is under
14°F(-10°C)
Heatsink temperature is over
194°F(90°C).
• motor or load mechanical failure
• load is too high
• stall parameter settings incorrect
• motor is overloaded
• motor overheating has been detected by
the variable speed drive motor temperature
model
Parameter save fault
• faulty operation
• component failure
VARIABLE SPEED DRIVE
SOLUTION
Remove faults from ungrounded systems.
Check the motor and motor cables.
Reset the fault and restart.
Should the fault re-occur, contact Sullair service.
Determine the reason for the Emergency stop
and remedy it.
Cannot be reset from the keypad. Switch off
power. If this fault appears simultaneously with
Fault 1, check the motor and motor cables.
IF THE PROBLEM IS NOT IN THE MOTOR OR
ITS CABLES, DO NOT RE-CONNECT POWER!
Contact Sullair service.
Reset the fault and restart. Should the fault reoc-
cur, contact Sullair service.
If there was a supply voltage loss or dip, reset
the fault and restart the variable speed drive.
Check the supply voltage. If it was within specifi-
cation at the time of the fault, an internal failure
has occurred. Contact Sullair service.
Check the utility supply voltage, cables and con-
nections.
Check the motor cables, connections and motor.
Provide supplemental heating or relocate the
variable speed drive to a warmer location.
An overtemperature warning is issued when the
heat sink temperature exceeds 185°F (85°C), a
fault occurs at 194°F (90°C). Check for the cor-
rect amount and unrestricted flow of cooling air.
Check the heatsink for dust or dirt buildup. Check
the highest ambient temperature level. Make sure
that the switching frequency is not set too high in
relation to ambient temperature and motor load.
Check motor, mechanical system and load level.
Confirm the stall parameter settings.
Decrease the motor load. If no motor overload
exists, check the temperature model parameters.
Upon reset of this fault, the variable speed drive
will automatically reload the parameter default
settings. Check all parameter settings after reset.
If the fault reoccurs, contact Sullair service.
Section 6
Continued...
27