Mitsubishi Electric FR-D720-0.2K-G, Инструкция по эксплуатации

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Adjustment of the output torque (current) of the motor
4.5.2 Start torque adjustment (Pr. 785)
 Use Pr. 785 to set the maximum torque generated in the low-speed range lower than 10% of the rated speed.
 Set a large value to generate a large starting torque.
 Continuous operation at the rotation speed lower than 10% of the rated speed even with no load may cause the motor
overload trip fault (E.THM) depending on the operating time because a current flows regardless of load generation.
For continuous operation at the speed lower than 10% of the rated speed, set
Pr. 785 to the value shown in the following
table or lower.
 In the low speed range lower than 10% of the rated speed,
Pr. 22 Stall prevention operation level
is disabled. Thus, a drive
unit failure, such as the overcurrent protection and the loss of synchronism detection, may occur when a torque equal to or
larger than the
Pr. 785 setting is applied.
Reduction of the motor torque in the low-speed range lower than 10% of the rated speed can be improved.
Parameter
Number
Name Initial Value Setting Range Description
785 PM control torque boost
9999
0 to 150%
Set the maximum torque generated in the
low-speed range lower than 10% of the rated
speed.
9999 Set as 100%
The above parameters can be set when Pr. 160 Extended function display selection = "0". (Refer to page 161.)
Motor Drive Unit Model
PM Motor
Capacity
Pr. 785 Setting
S-PM geared motor
FR-D720-0.2K to 1.5K-G 0.1kW to 0.75kW 80% or less
FR-D720-2.2K to 3.7K-G 1.5kW to 2.2kW 50% or less
FR-D740-0.4K to 1.5K-G 0.2kW to 0.75kW 80% or less
FR-D740-2.2K to 3.7K-G 1.5kW to 2.2kW 50% or less
PM motors other than above
FR-D720-0.2K to 3.7K-G
FR-D740-0.4K to 3.7K-G
- 50% or less
NOTE
 Keep the short-time torque to Pr. 785 setting or lower.