Inovance Monarch NICE-L-C-2003 - Page 51

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2 System Commissioning
2
• In the driving state, increase F8-03 properly if there is rollback at elevator startup, and
decrease F8-03 if there is car lurch at elevator startup.
• In the braking state, increase F8-04 properly if there is jerk in command direction at
elevator startup, and decrease F8-04 if there is car lurch at elevator startup.
More details about these parameters are as follows:
• F8-02 (Pre-torque offset) is actually the elevator balance coefficient, namely, the
percentage of the car load to the rated load when the car and counterweight are balanced.
This parameter must be set correctly.
• F8-03 (Drive gain) or F8-04 (Brake gain) scales the elevator’s present pre-torque
coefcient when the motor runs at the drive or brake side. If the gain set is higher, then
the calculated value of startup pre-torque compensation is higher.
The motor’s driving state and braking state are dened as follows:
• Motor driving state: full-load up, no-load down
• Motor braking state: full-load down, no-load up
c. Adjustment for load cell startup and automatic compensation
Parameter
No.
Parameter Name Setting Range Default Description
F8-01
Pre-torque
selection
0: Pre-torque invalid
1: Load cell pre-torque
compensation
2: Automatic pre-torque
compensation
3: Both load cell and automatic
pre-torque compensation effective
2
If the riding comfort
varies under
different loads due
to poor load cell
linearity when a load
cell is used, set this
parameter to 3.
F8-02 Pre-torque offset 0.0%–100.0% 50.0%
These are load cell
pre-torque regulating
parameters.
F8-03 Drive gain 0.00–2.00 0.60
F8-04 Brake gain 0.00–2.00 0.60
F2-11
Position lock
current coefcient
0.20%–50.0% 15%
There are automatic
pre-torque
compensation
regulating
parameters.
F2-12
Position lock
speed loop Kp
0.00–2.00 0.5
F2-13
Position lock
speed loop Ki
0.00–2.00 0.6
When F8-01 = 3, that is, both load cell and automatic pre-torque compensation are effective,
the controller identifies the braking or driving state according to the load cell signal, and
automatically calculates the required torque compensation value.
The controller quickly corrects the torque compensation value based on small rotation of the
encoder at the moment of startup.
For the adjustment method, see the above descriptions of “Adjustment for no-load-cell startup”
and “Adjustment for load cell startup”.
3) Handling of rollback at elevator startup and stop
The parameter setting related to rollback at elevator startup and stop is described in the
following table.
Parameter
No.
Parameter Name Setting Range Default
F3-19 Brake release delay 0.000–2.000s 0.600s
F8-11 Brake apply delay 0.200–1.500s 0.200s
The system retains the zero-speed torque current output within the time set in F3-19 from the