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Troubleshooting
4-7
Power Loss
3
➀
➂
DC bus voltage remained below
85% of nominal for longer than
[Power Loss Time]. Enable/
Disable with [Fault Config 1] on
Monitor the incoming AC line for low
voltage or line power interruption.
Power Unit
70
One or more of the output
transistors were operating in the
active region instead of
desaturation. This can be caused
by excessive transistor current or
insufficient base drive voltage.
1. Check for damaged output
transistors.
2. Replace drive.
Pwr Brd Chksum1 104
The checksum read from the
EEPROM does not match the
checksum calculated from the
EEPROM data.
Clear the fault or cycle power to the
drive.
Pwr Brd Chksum2 105
➁
The checksum read from the
board does not match the
checksum calculated.
1. Cycle power to the drive.
2. If problem persists, replace drive.
Replaced
MCB-PB
107
➁
Main Control Board was replaced
and parameters were not
programmed.
1. Restore defaults.
2. Reprogram parameters.
Shear Pin
63
➂
Programmed [Current Lmt Val]
has been exceeded. Enable/
Disable with [Fault Config 1] on
Check load requirements and
[Current Lmt Val] setting.
SW OverCurrent
36
➀
Drive output current has
exceeded the 1ms current rating.
This rating is greater than the 3
second current rating and less
than the hardware overcurrent
fault level. It is typically
200-250% of the drive
continuous rating.
Check for excess load, improper DC
boost setting. DC brake volts set too
high.
Trnsistr OvrTemp
9
➀
Output transistors have
exceeded their maximum
operating temperature.
1. Verify that maximum ambient
temperature has not been
exceeded.
2. Check fan.
3. Check for excessive load.
UnderVoltage
4
➀
➂
DC bus voltage fell below the
minimum value of 509V DC at
600V input, 407V DC at 400/
480V input or 204V DC at 200/
240V input. Enable/Disable with
[Fault Config 1] on
.
Monitor the incoming AC line for low
voltage or power interruption.
UserSet1 Chksum 101
➁
The checksum read from the
user set does not match the
checksum calculated.
Re-save user set.
UserSet2 Chksum 102
➁
UserSet3 Chksum 103
➁
(1)
See
for a description of fault types.
Fault
No.
Ty
p
e
(1
)
Description
Action
Summary of Contents for 9VT201-007HTNNN
Page 1: ...VTAC 9 AC Drive Firmware Version 3 xx User Manual ...
Page 4: ...soc 2 ...
Page 14: ...P 8 Overview Publication 9VT UM001D EN P Notes ...
Page 56: ...1 42 Installation Wiring Publication 9VT UM001D EN P Notes ...
Page 62: ...2 6 Start Up Publication 9VT UM001D EN P Notes ...
Page 130: ...3 68 Programming and Parameters Publication 9VT UM001D EN P Notes ...
Page 150: ...4 20 Troubleshooting Publication 9VT UM001D EN P Notes ...
Page 176: ...A 26 Supplemental Drive Information Publication 9VT UM001D EN P Notes ...
Page 196: ...B 20 Using the LCD OIM Publication 9VT UM001D EN P Notes ...
Page 212: ...C 16 Application Notes Publication 9VT UM001D EN P Notes ...
Page 223: ......