Invertek Drives elevator CORE Quick Start-Up Manual page 38

38 | P a g e
√ = Relevant with this Motor Type
Problem
GD
√
√
√
√
Travel
Comfort at Vibration
X
Levelling at low
speed/Low speed
√
speed
X
√
√
X
Motor Type
Problem
GD
Bump
felt
√
when
stopping
√
Motor is
pulled in
the
√
opposite
direction
during
Stopping
stopping
X
Comfort
(over-
hauling
effect of
X
the
load)
√
Noise
when
the
X
motor
brake
applies
X = Not Relevant with this Motor Type
Motor Type
Solutions
GD+E GL
√ √ Check there are no mechanical problems.
Confirm that the drive is not operating in current limit (
√ √
load and cabin balancing.
Check Motor parameters match the motor nameplate data:
For Geared system P4-01 = 0, For Gearless system P4-01 = 3
Motor rated voltage (P4-02)
√ √ Motor Rated Current (P4-03)
Motor Rated Frequency (P4-04)
Number of Motor Poles (P4-05), set to 0 if unknown.
Motor Rated Speed (P4-06)
√ X Motor power factor Cos Ø (P4-07)
√ √
Has Encoder been enabled and setup?
√ X
Has Motor auto-tune been performed?
Has Motor auto-tune and Encoder Offset
X √
test been performed?
If it is found that the travel comfort is good at high speed but poor at Levelling speed then the
low speed gains can be utilised.
If low speed gains (P9-30 & P9-31) are being used then reduce P9-30 (Low speed P-gain)
√ √
and Increase P9-31 (Low speed I-gain)
If low speed gains (P9-30 & P9-31) are not being used then reduce P9-27 (Speed Loop
proportional gain during run) and Increase P9-28 (Speed loop integral gain during run
√ √
Increase Speed Error deadband
√ √
Increase Encoder filter P6-07
Solutions
GD+E GL
Ensure motor contactor is not opening before the drive output is disabled/Brake applied, if
controlled by the drive try increasing P3-01 (Motor Contactor Closing time).
√ √
Increase P9-22 (Zero speed holding time on disable).
If a brake apply speed (P5-03) has been set reduce the value.
Increase P9-27 (Run speed P-gain) or P9-30 (Low speed P-gain) if low speed gains are being
√ √ used.
Adjust DC Injection during stop parameters:
P9-13 (DC Injection time at stop), P9-14 (DC Injection Current at Stop), P9-15 (DC Injection
X X
speed at stop).
Adjust Rollback Control Gains during stop parameters:
√ √ P9-20 (Rollback Control P-Gain at stop), P9-21 (Rollback Control i-Gain at stop).
Check P4-17 (Torque reduction during stopping) is not set too high resulting in torque loss
√ √
prior to stopping.
√ √ Increase Brake Apply speed in parameter in P5-03.
Decrease P4-17 (Torque reduction during stopping), parameter P9-22 (Zero speed holding time on
√ √
disable) can also be increased to give further improvement.
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on Display), if it is reduce
If no Set P6-05 to a 1, set encoder Pulses
Per Revolution in P6-03 and set encoder
type in P6-04.
If no Set P4-08 to a 1
If no Set P4-08 to a 3