68 Rockwell Automation Publication 20C-PM001F-EN-P - March 2012
Chapter 3 Troubleshooting
70 Power Unit 2 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.
See Table 24, “
Power Unit Fault
(F70) Subcodes,” on page 76 for
more information on this fault.
Clear the fault.
71 Periph Loss 2 The communications card has a
fault on the network side.
Check the DPI device event queue and
corresponding fault information for the
device.
81 Port DPI Loss 2 The DPI port has stopped
communicating.
A SCANport device was connected
to a drive operating DPI devices at
500k baud.
1. If the adapter was not intentionally
disconnected, check the wiring to the
port. Replace the wiring, port expander,
adapters, Main control board or complete
drive as required.
2. Check the HIM connection.
3. If an adapter was intentionally
disconnected and the [Logic Mask] bit for
that adapter is set to “1”, this fault will
occur. To disable this fault, set the bit in
parameter 276 [Logic Mask] for the
adapter to “0”.
94 Hardware Enbl An enable signal is missing from
the control terminal block.
See Table 25, “
Hardware Enable
Fault (F94) Subcode,” on page 76
for more information on this fault.
1. Check the control wiring.
2. Check the position of the hardware
enable jumper.
3. Check the digital input programming.
95 AutoT Rs Stat 2 The Autotune Rs Static Test has
failed.
1. Verify that the motor is not rotating
when autotune is enabled.
2. Check the motor connections.
96 AutoT Lm Rot 2 The Autotune Lm rotate test has
failed.
1. Check the motor nameplate data.
2. Check the motor connections.
3. Verify that the Accel Time < (Base
Speed/40) x 33 sec. Note: 33 sec. = time
limit to bring motor to 40 Hz.
97 AutoT MagRot 2 The Autotune magnetizing current
rotate test has failed.
1. Check the motor nameplate data.
2. Check the motor connections.
3. Verify that the Accel Time < (Base
Speed/40) x 33 sec. (see above).
98 AutoT Saturat 2 The Autotune saturation curve test
has failed.
1. Check the motor nameplate data.
2. Check the motor connections.
99 UserSet Timer 2 A User Set load or save was not
completed in less than 5 seconds.
Attempt to save the User Set again.
If this error occurs again, replace the Main
Control board.
100 Param Chksum 2 The checksum read from the Main
Control board does not match the
checksum calculated.
See Table 26, “
Parameter Checksum
Fault (F100) Subcodes,” on pa ge 76
for more information on this fault.
1. Restore the drive to the factory defaults.
2. Cycle the power.
3. Reload User Set if used.
104 PwrBrd Chksum 2 The checksum read from the
EEPROM does not match the
checksum calculated from the
EEPROM data.
See Table 21, “
Device Change (F44),
Device Added (F45), I/O Option
Board Removed (F65), Power Board
Checksum (F104), New I/O Option
Board (F107) and I/O Option Board
Change (F120) Fault Subcodes,” on
page 75 for more information on
this fault.
1. Cycle the power.
2. Contact Technical Support. See Techn ic al
Support Options on page 79 for more
information.
3. If the problem persists, replace the drive.
No. Name
Fault
Alarm
Description Action (if applicable)
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