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Delta Electronics AC Motor Drive VFD-VE Series User Manual

Page 94

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Chapter 4 Parameters|

Revision August 2008, 03VE, SW V2.04

4-45

0

20

40

60

80

100

100

90
80
70
60
50
40
30
20
10

01-02 voltage%

0

1

-0

1

F

re

q

u

e

n

c

y

%

1.5 Power curve

Square curve

00-12

Constant/Variable Torque Selection

Control

mode

VF VFPG SVC

FOCPG

Factory setting: 0

Settings

0

Constant Torque (100%)

1

Variable Torque (125%)

When “1” is selected, the oL level is 125% of rated drive current. All other overload ratings will

not change, example: 150% of rated drive current for 60 seconds.

00-13

Optimal Acceleration/Deceleration Setting

Control

mode

VF VFPG SVC

FOCPG

Factory setting: 0

Settings

0

Linear accel./decel. I

1

Auto accel., linear decel.

2

Linear accel., auto decel.

3

Auto accel./decel. I

4

Stall prevention by auto accel./decel. (limited by 01-12 to 01-21)

It can decrease the drive’s vibration during load starts and stops by setting this parameter.

Also it will speed up to the setting frequency with the fastest and smoothest start-up current

when it detects small torque. At deceleration, it will auto stop the drive with the fastest and the

smoothest deceleration time when the regenerated voltage of the load is detected.