Invertek Drives elevator CORE Quick Start-Up Manual page 36

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14. Comfort Optimisation
The tables below shows the relevant parameters for adjusting the comfort level throughout the travel curve, noting that the parameters
maybe different depending on if the system is geared with or without an encoder or gearlesss.
Key for Motor Type : GD = Geared without Encoder,
√ = Relevant with this Motor Type
Motor Type
Problem
GD GD+E
√
√
X
√
X
√
Starting
Rollback
Comfort
at start.
√
√
X
Key for Motor Type : GD = Geared without Encoder,
GD+E = Geared with Encoder,
X = Not Relevant with this Motor Type
Solutions
GL
Tip: Parameter P0-17 can be monitored to show the rollback error after each run.
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 test been
X √
performed?
Ensure motor contactor is closing before the drive output
√ √
is enabled.
√ √
Increase brake release time.
Adjust DC Injection parameters:
Increase P9-12 (DC Injection Current at Start) in steps of 10%,
whilst ensuring time set in P9-11 (DC Injection Time at Start) is
X X not too long.
Tip : The correct setting of the DC Injection parameters are those which result in no rollback
under all load conditions, and with no vibration or jerk when the motor brakes lift/car moves
away from the floor.
Adjust Rollback Control Gain parameters:
Increase P9-16 (Rollback Control P-Gain at start) in steps of
20% and decrease the value in P9-18 (Rollback Control
Activation Pulses).
√ √
Tip :
The longer the time set in P5-01 (Brake Release time) the more responsive P9-16 will be.
P9-18 Determines the movement of the motors shaft (as measured by the encoder) before the
rollback function activates
GD+E = Geared with Encoder,
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GL = Gearless.
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
Increase P3-01 (Motor
Contactor Closing time)
P5-01 (brake release time)
If the time is set too long it may
not be acceptable in the
application
P9-12 (DC Injection Current
at Start)
P9-11 (DC Injection Time at
Start)
The correct setting of P5-01, P9-
16, P9-18 are those which result
in no rollback under all load
conditions, and with no vibration
or jerk when the motor brakes
lift/car moves away from the
floor.
GL = Gearless.