Larsen & Toubro C*2000 Series, Руководство пользователя

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Chapter 8 Application
8-9
Cx2000 AC Drive
 H31: Enter the pole number on the Motor nameplate.
 H32: Enter the slip frequency in accordance with the following formula and motor nameplate.
120
P rpm
f f
r s
Where,
fs
= Rated slip frequency
f r
= Rated frequency
rpm
= Motor rated RPM
P
= Motor pole number
Ex) Rated freq.: 60Hz, Rated RPM: 1740rpm, Poles: 4,
 H33: Enter the motor nameplate rated current.

H34: Enter the measured current when the motor is running at rated frequency after the load is
removed. Enter 50% of the rated motor current when it is difficult to measure the motor no load current.

H36: Enter motor efficiency on the nameplate.

H37: Select load inertia based on motor inertia as shown below.
H37 Load inertia rate 0 Less than 10 times motor inertia
1 About 10 times motor inertia
2 Greater than 10 times motor inertia

As the loads are heavier, the speed gap between rated RPM and synchronous speed is widening (see
the figure below). This function compensates for this inherent slip.
Hz f
s
2
120
4 1740
60
S yn ch ro n o u s
sp e e d
M o to r re te d
R P M
R P M
L o a d
S lip
co m p e n sa tio n