Sullair SUPERVISOR CONTROLLER Series Instruction Manual page 32

Section 6
VARIABLE SPEED DRIVE
CODE FAULT
24 Counter fault
25 Microprocessor
watchdog fault
26 Startup prevent-
ed
31 IGBT tempera-
ture (hardware)
32 Fan cooling
36 Control Unit
37 Device change
(same type)
38 Device added
(same type)
39 Device removed
40 Device unknown
41 IGBT tempera-
ture
44 Device change
(different type)
45 Device added
(different type)
50 Analog input Iin
< 4 mA
51 External fault
53 Communication
bus fault
54 Slot fault
28
POSSIBLE CAUSE
Values displayed on the counters
are incorrect
• faulty operation
• component failure
Startup of the drive has been prevented.
IGBT Inverter Bridge overtemperature protec-
tion has detected a high short-term overload
current
The variable speed drive cooling fan did not
start when commanded
The control unit cannot control the power unit
and vice-versa
• option board changed
• different power rating of drive
• option board added
• drive of different power rating added
• option board removed
• drive removed
Unknown option board or drive
IGBT Inverter Bridge overtemperature protec-
tion has detected a high short-term overload
current
• option board changed
• different power rating of drive
• option board added
• drive of different power rating added
Current at the analog input is< 4 mA.
Digital input set as an external fault input has
been triggered
The data connection between the communica-
tion bus master and the communication bus
board has failed
Defective option board or slot
SOLUTION
Reset the fault and restart. Should the fault reoc-
cur, contact Sullair service.
Check Start Enable/Interlock settings.
Check loading.
Check motor size.
Contact Sullair service.
Change the control unit.
Reset.
Note: No Fault Time Data Record is made.
Reset.
Note: No Fault Time Data Record is made.
Reset.
Note: No Fault Time Data Record is made.
Contact Sullair service.
Check loading.
Check motor size.
Reset.
Note: No Fault Time Data Record is made.
Note: Application parameter values restored to
default.
Reset.
Note: No Fault Time Data Record is made.
Note: Application parameter values restored to
default.
Adjust parameter 2.6.1 to "None".
Clear the package emergency stop
Check Estop wiring to the drive input
Check Supervisor bus cable.
Set Supervisor VSD to "Serial".
If installation is correct contact Sullair service.
Check that the board is properly installed and
seated in slot. If the installation is correct, contact
Sullair service.