—————— Instruction manual ——————
371
FAILURE POSSIBLE CAUSES
The speed during acceleration
with max. current is not linear
• Reduce the Speed I and Speed P proportionally. If this does not lead to an improvement, optimize
the regulator (see chapter 5.3.6).
Speed oscillating • Check Speed P and Speed I parameter
• If the operating point is in the field weak range, check the Fld reg P gain and Fld reg I gain
parameters and eventually Voltage P and Voltage I parameters.
• Remedy: Optimize the regulator as previously described
Drive not reacting to adaptive
speed regulation
• Adaptive speed regulation not enabled. Enable spd adap = Enabled
Motor potentiometer function
not executed
• Function not enabled. Enable motor pot = Enabled
• With operation via the terminal strip: Motor pot up and/or Motor pot down were not assigned to
a digital input
Jog operation not possible • A start command is still present
• Function not enabled. Enable jog = Enabled
• With operation via terminal strip: Jog + and/or Jog - were not assigned to a digital input.
Internal speed reference values
not carried out
• Function not enabled. Enab multi spd = Enabled
• With operation via terminal strip: Speed sel 0, Speed sel 1 and Speed sel 2 were not assigned
to a digital input.
Multi-Ramp function not
reacting
• Function not enabled. Enab multi rmp = Enabled
• With operation via terminal strip: Ramp sel 0 and Ramp sel 1 were not assigned to a digital input
Overload not possible • Function not enabled. Enable overload = Enabled
The Current regulator selftune
procedure never finishes and
continues over and over again.
• Because of the motor inductance value, the routine is executing an endless loop. The inductance
value is cycling between two values without an evolution of the
algorithm.
• Solution procedure:
1) verify the two displayed inductance values
2) insert the average value as motor inductance during the autotuning.
If the procedure does not end, repeat step 1) and 2).
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