Gram IF 4000 Manual De Uso página 370

Drive does not respond to changes in speed command.
Cause(s)
No value is coming from the
source of the command.
Incorrect reference source is
being selected via remote
device or digital inputs.
Motor and/or drive will not accelerate to commanded speed.
Cause(s)
Acceleration time is excessive. None
Excess load or short
acceleration times force the
drive into current limit, slowing
or stopping acceleration.
Speed command source or
value is not as expected.
Programming is preventing the
drive output from exceeding
limiting values.
Torque performance does not
match motor characteristics.
Indication
The drive "Run" indicator is lit
and output is 0 Hz.
None
Indication
None
None
None
None
Troubleshooting
Corrective Action
• Check
d012 [Control Source] for
correct source.
• If the source is an analog input,
check wiring and use a meter to
check for presence of signal.
• Check
d002 [Commanded Freq]
to verify correct command.
• Check
d012 [Control Source] for
correct source.
• Check
d014 [Dig In Status] to
see if inputs are selecting an
alternate source. Verify settings
for A051 - A054 [Digital Inx Sel].
• Check
P038 [Speed Reference]
for the source of the speed
reference. Reprogram as
necessary.
• Review the Speed Reference
Control chart on page
Corrective Action
Reprogram P039 [Accel Time 1] or
A067 [Accel Time 2].
Compare d003 [Output Current] with
A089 [Current Limit 1].
Remove excess load or reprogram
P039 [Accel Time 1] or
Time 2].
Check for improper A084
Select] setting.
Verify d002 [Commanded Freq].
Check d012 [Control Source] for the
proper Speed Command.
Check P035 [Maximum Freq] to
insure that speed is not limited by
programming.
Set motor nameplate full load amps
in parameter A126 [Motor NP FLA].
Perform A127 [Autotune] "Static
Tune" or "Rotate Tune" procedure.
Set A125 [Torque Perf Mode] to
option 0 "V/Hz".
4-7
1-20.
A067 [Accel
[Boost