YASKAWA U1000 Series - Page 241

5.4 d: Reference Settings
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual 241
Parameter Details
5
Figure 5.51
Figure 5.51 Speed/Torque Control Switching Time
■ d5-01: Torque Control Selection
Setting 0: Disabled
Speed Control will be active. Also use this setting when H1- = 71 (Speed/Torque Control Switch).
Setting 1: Enabled
Torque Control is always enabled.
■
d5-02: Torque Reference Delay Time
A filter with the time constant set in parameter d5-02 can be applied to the torque reference signal in order to eliminate
oscillation that results from an unstable torque reference signal. A higher filter time will stabilize control, but also reduce
the responsiveness.
■
d5-03: Speed Limit Selection
Parameter d5-03 determines how the speed limit is set.
Setting 1: Frequency Reference Input
The frequency reference value at the active reference source (digital operator, External reference 1 or External reference
2) will be used as speed limit. Note that in this case all settings for accel/decel times (C1-01 to C1-08) and S-curves
(C2-01 to C2-04) will apply for the speed limit.
Setting 2: Parameter d5-04
The speed limit is set by parameter d5-04.
■
d5-04: Speed Limit
Sets the speed limit during torque control if parameter d5-03 is set to 2. Refer to Speed Limitation and Speed Limit Bias
on page 240.
No. Parameter Name Setting Range Default
d5-01 Torque Control Selection 0 or 1 0
No. Parameter Name Setting Range Default
d5-02 Torque Reference Delay Time 0 to 1000 ms Determined by A1-02
No. Parameter Name Setting Range Default
d5-03 Speed Limit Selection 1 or 2 1
No. Parameter Name Setting Range Default
d5-04 Speed Limit -120 to 120% 0%
d5-06
Speed/Torque control
switch (H1- = 71)
Run command
OFF ON OFF ON
d5-06
OFF ON
Operation Mode
Speed Control Torque Control Speed Control Torque Control
Frequency reference
signal or d5-04
Speed Ref. Speed Limit Speed Ref. Speed Limit
Torque LimitTorque Limit Torque Reference Torque Reference
Speed Control
d5-06
Speed Ref.
Torque Limit
Torque reference signal/
Torque limit
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