Larsen & Toubro C*2000 Series, Руководство пользователя

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Chapter 8 Application
8-8
Cx2000 AC Drive
H 8 Dwell time - 0.0 ~ 10.0 0.0 sec
 In this setting, motor begins to accelerate after dwell operation is executed for dwell time at
the dwell frequency.
 It is mainly used to release mechanical brake in elevators after operating at dwell
frequency.

Dwell frequency: This function is used to output torque in an intended direction. It is useful in hoisting
applications to get enough torque before releasing a mechanical brake. Rated Slip frequency is
calculated by the formula shown below.
8.6 Slip compensation
Group Code Item Set Value Setting Range Initial Unit
Function
group 2
H30 Motor type select - 0.1 0~ 11.00 0.75
H31 Number of motor poles - 2 ~ 12 4
H32 Rated slip frequency - 0.00 ~ 10.00 2.33 Hz
H33 Motor rated current - 0.5 ~ 150.0 26.3 A
H34 Motor No Load Current - 0.1 ~ 50.0 11.0 A
H36 Motor efficiency - 50 ~ 100 87 %
H37 Load inertia rate - 0 ~ 2 0
H40 Control mode select 1
0 ~ 3
0
 Set H40 – [Control mode select] to 1 (Slip compensation) in the function group 2
 This function enables the motor to run in constant speed by compensating inherent slip in an
induction motor.

H30: Set the motor type
H30 Motor type select
0.1 0.1kW
~
11.0 11.0kW
Frequency
R un C om m and
D w ell tim e
D w ell freq.
Start freq.