YASKAWA T1000A Technical Manual page 160

5.4 d: Reference Settings
Torque
Limit
Internal
Torque
Reference
Generated Torque
(d5-08 = 1)
<1>
Speed
Limit Bias
d5-05
Line Direction
Application Example
<1> The value of delta n in the drawings depends on the ASR setting in parameters C5-
n
Indicating Operation at the Speed Limit
A digital output can be programmed to close when the drives is operating at or beyond the speed limit (H2-
Use this output to notify a PLC or some other control device of abnormal operating conditions.
n
Switching Between Torque and Speed Control
A digital output can be used to switch Torque Control and Speed Control (H1-
Control to Torque Control, the torque limit becomes the torque reference and the speed reference becomes the speed
limit. This change is reversed when switching back to Speed Control.
If required by the application, a delay time can be set up using parameter d5-06. The reference values (torque reference/
speed limit in Torque Control or speed reference/torque limit in Speed Control) are held during this switch delay time. Be
sure to change the reference values from the controller within this delay time.
Note: 1. The switching delay time d5-06 is not applied when the Stop command is entered. Here the operation switches immediately to speed
control and the drive decelerates to stop at the torque limit.
2. Set d5-01 to 0 when switching between Torque Control and Speed Control. An oPE15 alarm will be triggered if parameter d5-01 is
set to 1 while H1-
Figure 5.42
Speed/Torque control
input (H1-
Run command
Operation Mode
Frequency refernce
signal or d5-04
Torque reference signal/
Torque limit
n
d5-01: Torque Control Selection
No.
d5-01
Setting 0: Disabled
Speed Control will be active. Also use this setting when H1-
160
Torque
Torque
Δn
Δn
Limit
Speed
0
Speed
Limit
Torque
Limit
Winder
Speed Torque
Line Direction
M
is set to 71 at the same time.
OFF ON
= 71)
OFF ON
Speed Control Torque Control
Speed Ref. Speed Limit
Torque Limit Torque Reference
d5-06
Figure 5.42 Speed/Torque Control Switching Time
Parameter Name
Torque Control Selection
Operating Conditions
Torque
Torque
Limit
Speed
Speed Limit
Limit
Bias d5-05
Speed
0
Internal
Torque
Reference
Δn
Torque
Δn
Limit
Torque
Speed Torque
M
OFF
Speed Control
Speed Ref.
Torque Limit
d5-06 d5-06
= 71 (Speed/Torque Control Switch).
YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
Torque
Torque
Limit
Speed Limit
Bias d5-05
Internal
Speed Limit
Torque
Reference
Speed
0
Internal
Torque
Reference
Δn
Torque
Δn
Limit
Unwinder
Speed Torque Speed
Line Direction
M
.
= 71). When switching from Speed
ON
Torque Control
Speed Limit
Torque Reference
Setting Range
0 or 1
Torque
Δn
Δn
Speed
0
Speed
Limit Bias
Speed
d5-05
Limit
Torque
Limit
M Line Direction
= 32).
Speed Control
Speed Ref.
Torque Limit
Default
0