D5: Torque Control - YASKAWA GA700 Technical Manual

Parameter d4-07 is applicable only if the frequency reference is set by an analog or pulse input.
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d4-08: Up/Down 2 Bias Upper Limit
No.
Name
(Hex.)
d4-08 Up/Down 2 Bias
Upper Limit
(02AF)
RUN
The set bias upper limit is saved in d4-06 [Frequency Ref Bias (Up/Down 2)]. Set d4-08 to an appropriate value
before using the Up/Down 2 function.
Note:
When d4-01 = 1 [Freq Reference Retention Select = Enabled] and b1-01 = 0 [Frequency Reference Selection 1 = Keypad], the bias
value will be added to the frequency reference if no Up/Down 2 command is received for 5 s, and will be reset to 0 afterwards. From
that point, the bias can be increased up to the limit set in d4-08 again.
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d4-09: Up/Down 2 Bias Lower limit
No.
Name
(Hex.)
d4-09 Up/Down 2 Bias
Lower limit
(02B0)
RUN
The set bias lower limit is saved in d4-06 [Frequency Ref Bias (Up/Down 2)]. Set d4-09 to an appropriate value
before using the Up/Down 2 function.
Note:
When d4-01 = 1 [Freq Reference Retention Select = Enabled] and b1-01 = 0 [Frequency Reference Selection 1 = Keypad], the bias
value will be added to the frequency reference if no Up/Down 2 command is received for 5 s. Then, the bias value will be reset to 0.
If the bias is increased using the Up 2 command, the frequency reference cannot be reduced with a Down 2 command when d4-09 = 0.
Set a negative lower limit in d4-09 to allow speed reduction in this situation.
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d4-10: Up/Down Freq Lower Limit Select
No.
Name
(Hex.)
d4-10 Up/Down Freq
Lower Limit Select
(02B6)
0 : d2-02 or Analog (larger level)
The higher value between d2-02 [Frequency Reference Lower Limit] and an analog input programmed for
Frequency Bias [H3-02, H3-06, H3-10 = 0] determines the lower frequency reference limit.
Note:
When using External Reference 1/2 Selection [H1-xx = 2] to switch between the Up/Down function and an analog input as the reference
source, the analog value becomes the lower reference limit when the Up/Down command is active. Set d4-10 = 1 to make the Up/Down
function independent of the analog input value.
1 : d2-02
The lower limit of the frequency reference can only be set with d2-02.
◆

d5: Torque Control

d5 parameters set the Torque Control function.
Torque Control is a function that controls the output torque of the motor. Torque Control can be used for roller
drives, winders, unwinders, conveyors and other machinery that utilizes tension control and push/pull
applications. When the machine side is offloaded suddenly when material runs out, Torque Control is used in
conjunction with the speed limit function to keep the rotation speed of the motor from climbing.
Torque Control can be used when A1-02 [Control Method Selection] is set to any of the following.
• 3 [Closed Loop Vector Control]
• 4 [Advanced OpenLoop Vector Control]
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
V/f CL-V/f OLV CLV AOLV
Sets the upper limit of the Up/Down 2 bias as a percentage of E1-04
[Maximum Output Frequency].
V/f CL-V/f OLV CLV AOLV
Sets the lower limit of the Up/Down 2 bias as a percentage of E1-04
[Maximum Output Frequency].
V/f CL-V/f OLV CLV AOLV
Selects how the lower frequency limit is set when using the Up/Down
function.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
11.5 d: Reference Settings
Default
(Range)
100.0%
(0.0 - 100.0%)
Default
(Range)
0.0%
(-99.9 - 0.0%)
Default Setting
(Range)
0
(0, 1)
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