Ext-50 - 53 (Speed Limit For Torque Mode Operation) - LG SV-iS5 Instruction Manual

Chapter 6 - Parameter Description [EXT]
[Voltage]
The AM terminal outputs inverter output voltage. The
output value is determined by,
AM Output Voltage = (Output voltage / Max. output
voltage) × 10V X AM Output Gain (EXT41~42)/ 100
[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 X AM Output Gain (EXT41~42)/ 100
[Torque]
The AM terminal outputs inverter output torque. The
output value is determined by,
AM Output Voltage = (Output Torque / Rated Torque
current) × 10V X AM Output Gain (EXT41~42)/ 150
EXT-50~53 [Speed limit for Torque mode
operation]
LCD
Code Description
display
EXT- Speed Speed Limit
50 Limit Level
EXT- Speed Speed Limit
51 Bias Bias
EXT- Speed Speed Limit
52 Gain Gain
EXT- Speed Limit
Speed Dir
53 Direction
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
Morek IT OÜ, Rauna 24, 76506 Saue Harjumaa, Estonia. www.morek.eu Tel. +372 604 1423 Fax +372 604 1447 morek@morek.eu
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.
DRV_00
Torque
Command
Related parameters : FU2-39 [Control mode selection]
Factory Setting
setting range
0 –
100[%]
100[%]
0 –
100[%]
200[%]
1 1 – 10
0
1 (Reverse)
(Forward)
1
(Forward)
142
Output torque
EXT_51
Speed Bias
EXT_50
Speed Limit
FU1-20 [max Freq]
EXT-27[Trq + Limit] EXT-28[Trq - Limit]
Speed
EXT_51
Speed Bias