Mitsubishi Electric FR-E800, Инструкция по эксплуатации

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5. Speed Control
5.4 Setting the torque limit level
1
2
3
4
5
6
7
8
9
10
*1 The initial value changes from 150% to 200% when the control method is changed from V/F control or Advanced magnetic flux vector control to
Real sensorless vector control or Vector control in the FR-E820-0175(3.7K) or lower, FR-E840-0095(3.7K) or lower, FR-E860-0061(3.7K) or
lower, and FR-E820S-0110(2.2K) or lower.
*2 Torque can be limited via CC-Link, CC-Link IE TSN, and CC-Link IE Field Network Basic. CC-Link communication is unavailable when the Vector
control compatible options is installed.
NOTE
• The lower limit for the torque limit level under Real sensorless vector control is set to 30% even if a value lower than 30% is set.
• Under PM sensorless vector control, the torque limit is not activated in a low-speed range with a rated frequency of less than
10%.
• Under PM sensorless vector control, the torque limit level is reduced inversely proportional to the output frequency in the
constant output range of the rated motor frequency or higher.
 Block diagram of torque limit

Selecting the torque limit input method (Pr.810)
• Use Pr.810 Torque limit input method selection to select the method to limit the output torque for speed control.
The method in the initial setting is use of the parameter settings.
 Internal torque limit 1 (Pr.810 = "0", Pr.812 to Pr.814)
• The torque is limited by parameter setting
• In the initial value, a limit is applied to all quadrants by
Pr.22 Stall prevention operation level (Torque limit level) .
816
H720 Torque limit level during
acceleration
9999
0% to 400% Set the torque limit value during acceleration.
9999 The same torque limit as constant speed.
817
H721 Torque limit level during
deceleration
9999
0% to 400% Set the torque limit value during deceleration.
9999 The same torque limit as constant speed.
858
T040 Terminal 4 function
assignment
0 0, 4, 6, 9999
The torque limit level can be changed with setting value "4" and the
signal to terminal 4.
874
H730
OLT level setting 150% 0% to 400%
The inverter can be set to be shut off at activation of torque limit
and stalling of the motor. Set the output to be shut off.
Pr. Name Initial value
Setting
range
Description
Torque limit
<Vector control>
Speed control
Speed c
-
Iq current control
IM
Encoder
Pr.810 setting
Torque limit input
method
Operation
0 (initial value) Internal torque limit 1
Perform the torque limit operation using the parameter ( Pr.22, Pr.812 to Pr.814 ) settings.
If changing the torque limit parameters via communication is enabled, the torque limit input
can be performed via communication.
1 External torque limit Torque limit using analog voltage (current) to terminal 4 is valid.
2 (Internal torque limit 2)
• The setting value of Pr.805 or Pr.806 is used as the torque limit value.
• The torque limit via communication is enabled.