Mitsubishi Electric fr-e700 series, Инструкция по эксплуатации

Страница: 189 / 608

Parameter Adjust the output torque (current) of the motor
FR-E700 SC EC/ENE 6 - 35
6.3 Adjust the output torque (current) of the motor
6.3.1 Manual torque boost (Pr. 0, Pr. 46)
You can compensate for a voltage drop in the low-frequency region to improve motor torque reduc-
tion in the low-speed range. Motor torque in the low-frequency range can be adjusted to the load to
increase the starting motor torque.
Switch-over between parameters 0 and 46 is possible via the RT input signal.
햲
The above parameter can be set when Pr. 160 "User group read selection" = 0.
Purpose Parameter that must be set
Refer to
Section
Set starting torque manually Manual torque boost Pr. 0, Pr. 46, 6.3.1
Automatically control output current
according to load Advanced magnetic flux vector control,
General-purpose magnetic flux vector control Pr. 71, Pr. 80,
Pr. 81, Pr. 90,
Pr. 450, Pr. 800 6.3.2
6.3.3
Compensate for motor slip to secure
low-speed torque Slip compensation (V/F control and general-
purpose magnetic flux vector control only) Pr. 245–Pr. 247 6.3.4
Limit output current to prevent
inverter trip Stall prevention operation Pr. 22, Pr. 23,
Pr. 66, Pr. 156,
Pr. 157 6.3.5
Pr.
No.
Name Initial Value
Setting
Range
Description Parameters referred to
Refer to
Section
0
Torque boost
FR-E720S-008SC to 050SC,
FR-E740-016SC and 026SC
6%
0–30% Set the output voltage at 0Hz as %.
3
19
71
178–184
Base frequency
Base frequency voltage
Applied motor
Input terminal function
selection 6.5.1
6.5.1
6.8.2
6.10.1
FR-E720S-080SC and 110SC,
FR-E740-040SC to 095SC
4%
FR-E740-120SC and 170SC 3%
FR-E740-230SC and 300SC 2%
46
Second torque
boost
햲
9999
0–30%
Set the torque boost value when the
RT signal is on.
9999 Without second torque boost
V/F V/F V/F