YASKAWA GA700 Technical Manual page 685

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Indicating Operation at the Speed Limit
When the motor is within or exceeds the speed limit, the drive outputs a signal to the PLC or other such control
devices and lets the user know that an error has occurred. Set any MFDO function selections [H2-01 to H2-04] to
32 [During Spd Limit inTorqueControl] to enable this function.
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Switching Between Torque and Speed Control
Use a digital input to switch Torque Control and Speed Control. Set H1-xx = 71 [MFDI Function Select = Speed/
Torque Control Switch] to enable this function.
When switching from Speed Control to Torque Control, the torque limit becomes the torque reference and the
speed reference becomes the speed limit. When switching from Torque Control to Speed Control, the torque
reference becomes the torque limit and the speed limit becomes the speed reference. When the application of
delay time becomes necessary for switching between Speed Control and Torque Control, set d5-06 [Speed/Torque
Changeover Time]. The reference value of the Torque Control and Speed Control when the switchover signal was
input are maintained during this switch delay time. Change the reference values from an external control device
within this delay time.
Note:
• Set d5-01 = 0 [Torque Control Selection = Speed Control] when switching between Torque Control and Speed Control. An oPE15
[Torque Control Setting Error] will be triggered if d5-01 = 1 [Torque Control] is set while H1-xx = 71 is set at the same time.
• If the Stop command is input, the delay time set in d5-06 will not be applied. In this case, Torque Control will immediately switch to
Speed Control and ramp to stop.
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d5-01: Torque Control Selection
No.
Name
(Hex.)
d5-01 Torque Control
Selection
(029A)
0 : Speed Control
Speed Control is enabled. The drive controls the speed according to C5-01 to C5-07 [Speed Control (ASR) Setting
Parameters].
Also use this setting when switching the Speed Control and Torque Control by setting H1-xx = 71 [MFDI
Function Select = Speed/Torque Control Switch].
1 : Torque Control
Torque Control is always enabled.
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d5-02: Torque Reference Delay Time
No.
Name
(Hex.)
d5-02 Torque Reference
Delay Time
(029B)
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Figure 11.66 Speed/Torque Control Switching Time
V/f CL-V/f OLV CLV AOLV
Enables/disables Torque Control.
V/f CL-V/f OLV CLV AOLV
Sets the primary delay time constant for the torque reference filter.
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)
0
(0, 1)
Default
(Range)
Determined by A1-02
(0 - 1000 ms)
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