Startup Of New Vsd Compressor Package; Vsd Compressor Troubleshooting - Sullair 02250165-411 R01 User Manual

WS CONTROLLER USER INTERFACE MANUAL
6.5 STARTUP OF NEW VSD
COMPRESSOR PACKAGE
Read and follow all safety warnings and cautions in
this manual.
1. At installation ensure:
• That the incoming power and ground wires
are properly connected to terminal blocks
in the electrical control box.
• Visually check all power and controls con-
nections to the drive to ensure that no dam-
age has occurred.
2. Check that moisture has not condensed
inside the variable speed drive.
3. Connect to the utility and switch the power
on. The WS Controller will establish commu-
nications and report errors if correct condi-
tions are not found.
communication faults will be indicated for
either improper communication wiring or
improper application or communication soft-
ware in the drive.
Table 6-3: VSD Troubleshooting Guide—Drive Faults
CODE FAULT
VSD1 Com Fault
VSD1 Parameter Error
V01 Overcurrent
V02 Overvoltage
V03 Ground Fault (Earth
Fault)
42
If replacing a drive,
POSSIBLE CAUSE
Communications lost with the VSD
An error has occurred during setup of
the VSD adjustments.
The variable speed drive has detected
a high current (>4xIn) in its output due
to:
• sudden heavy load increase
• short in the motor
• short in the cables to the motor
• unsuitable motor
The DC-link voltage has exceeded its
high limit due to:
• deceleration time too short
• high voltage levels or surges in the
utility supply
Current sensing indicates that the
sum of motor phase currents is not
zero.
• insulation failure in motor or motor
cables
4. Check the direction of the fan rotation. To
observe the rotation, quickly press START
then the STOP
Controller. If the fan rotates incorrectly, dis-
connect power and interchange two of the
fan motor leads at the fan starter. Compres-
sor motor rotation is factory set.
6.6 VSD COMPRESSOR
TROUBLESHOOTING
The WS Controller continuously monitors VSD drive
performance through the serial channel. Table 6-3
shows Fault messages that are displayed by the WS
Controller in the event of problems along with
possible causes and some likely solutions.
controller monitors communications with the inverter
and will display a
communications are broken. The WS Controller will
display a VSD drive fault with a code number of the
form V—accompanied by a text description.
keypad service tool is plugged into the drive, it will
display the fault code and the fault name.
SOLUTION
Check connections to the VSD.
Check VSD control power and check for
board faults.
Check for proper drive size.
Check proper WS model commissioning.
Check loading.
Check motor.
Check cables.
Make the deceleration time longer.
Use a chopper and brake resistor.
Correct utility supply voltage (level is too
high).
Add input impedance to limit surges.
Remove faults from ungrounded
systems.
Check the motor and motor cables.
SECTION 6
on the WS
The
fault message if these
If a