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Open-loop Start-up
14
Decrease the Motor Mid Voltage Parameter
•
MOTOR MID VOLTS (A5) and MOTOR
MIN VOLTS (A5) parameters should
usually be set at default, see Table 1 on
page 9.
•
These parameters would only be
adjusted slightly with certain issues (see
Stalling Attempting to Lift Load (page
11); Spotting or Stalling Going into
Leveling (page 13); or Overshooting
Floor only with Regen Load (page 16)).
•
Decrease MOTOR MID VOLTS (A5)
parameter (decrease increments of 0.5
and observe performance)
•
Note: When decreasing the Motor Mid
Volts parameter, watch that the drive
does not start stalling (especially with
full-load)
Leveling Times Different Up vs Down
If the elevator exhibits significantly different
leveling speeds/times up vs down then until
resolved, try the following (in order):
1. Verify the Slip Compensation
parameters
2. Complete Motor RPM Adjustment
Procedure
Verify Slip Compensation parameters
•
Verify SLIP COMP TIME (A1) parameter is
at default of 1.50.
•
Verify SLIP COMP GAIN (A1) parameter is
at default of 1.00.
Complete Motor RPM Adjustment Procedure
•
At Empty Car, run the drive at 10% of
contract speed and complete the Motor
RPM Adjustment Procedure detailed on
page 10.
•
At Full-load, run the drive at 10% of
contract speed and complete the Motor
RPM Adjustment Procedure detailed on
page 10.
Leveling Oscillation
If the elevator exhibits a leveling speed
oscillation then until resolved, try the following
(in order):
1. Increase the Hunt Prevention Time
Parameter
2. Decrease Distortion Loop Gain
parameters
Note: if no performance change is observed
after any one step, set any changed value(s)
back to the original value(s) before
proceeding onto the next step.
Increase the Hunt Prevention Time Parameter
•
The Hunt Prevention Time Constant is
defaulted as 0.2 seconds (HUNT PREV
TIME (A4)= 0.2).
•
Increase the HUNT PREV TIME (A4)
parameter in 0.1 intervals and observe
performance.
•
Note: if no performance change is
observed, set the values back to default
Decrease the Distortion Loop Gain Parameters
•
The Distortion Loop Gain parameters
are defaulted at Id DIST LOOP GN (A4)
= 0.50 and Iq DIST LOOP GN (A4) =
0.30
Note: to view these parameter enabled
hidden items (HIDDEN ITEMS
(U2)=enabled)
•
Decrease Id DIST LOOP GN (A4) and
Iq DIST LOOP GN (A4) parameters in
0.1 intervals and observe performance.
•
Note: if no performance change is
observed, set the values back to default
Bump at Stop
If a bump is felt at the stop, then until resolved,
try the following (in order):
1. Verify Mechanical Brake Timing
2. Decrease Decel Jerk Out Rate
3. Decrease DC Injection Stop Frequency
Note: if no performance change is observed
after any one step, set any changed value(s)
back to the original value(s) before
proceeding onto the next step.
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