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Ext-50~53 [speed limit for torque mode operation – HP 30 HP30 User Manual

Page 151

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Chapter 6 - Parameter Description [EXT]

6-59

AM Output Voltage = (Output voltage / Max. output
voltage) × 10V

[DC link vtg]
The AM terminal outputs the DC link voltage of inverter.
The output value is determined by,
AM Output Voltage = (DC link voltage / Max. DC link
voltage) × 10V

[Torque]
The AM terminal outputs the Torque of the motor. The
output value is determined by,
AM Output Voltage = (Torque current/ Rated Torque
current ) * 10V* AM output gain (EXT-41~42) / 150

EXT-50~53 [Speed limit for Torque mode
operation]

Related parameters : FU2-39 [Control mode selection]
FU1-20 [max Freq]
EXT-27[Trq + Limit] EXT-28[Trq - Limit]

Code

LCD

display

Description

Factory

setting

Setting

range

EXT-

50

Speed

Limit

Speed Limit

Level

100[%]

0 –

100[%]

EXT-

51

Speed

Bias

Speed Limit

Bias

10[%]

0 –

200[%]

EXT-

52

Speed

Gain

Speed Limit

Gain

1

1 – 10

EXT-

53

Speed Dir

Speed Limit

Direction

1

(Forward)

0

(Reverse)

1

(Forward)



By setting speed limit, this parameter prevents the motor
from rotating excessively high speed due to no-load or light
load connection during Vector_TRQ in FU2-39 [Control
mode].
Set as the percent of EXT-50 [Speed limit level] and EXT-
51 [Speed Limit Bias] to FU1-20 [Max Freq].

If EXT-53 [Speed Limit Direction]= FWD, EXT-51 [Speed
Limit Bias]

FWD Torque control is set, the FWD Torque control is
shown as below. In other words, when the motor rotates in
Forward direction, FWD torque is kept controlled in the

range of EXT-50 [Speed Limit Level] + EXT-51 [Speed
bias]. When the motor rotates in Reverse direction, REV
torque is controlled in EXT-51[Speed Limit Bias] and
torque is controlled constant in the above speed range.
EXT-52 [Speed limit gain] is the curve value to reduce the
FWD torque or to increase to the constant torque in
Reverse direction.

Speed

Output torque

EXT_51

Speed Bias

DRV_00

Torque

Command

EXT_51

Speed Bias

EXT_50

Speed Limit