Yaskawa VS-616PS5 Series Programming Manual - Manual (Page 41)

VS-616PS5 Programming Manual 41
Setting Range: 0 to 1000ms
Factory Default: 50ms
When using a multifunction input to switch between speed and torque mode, D5-06
can be used to allow the analog signals to be modified in preparation for the newly
selected mode.
Upon a change in command (Speed/Torque) the analog input values are retained for
the time set in D5-06 so the analog signals can be changed to accommodate the new
mode. After the D5-06 time elapses the new analog signals are accepted.
Torque Control Operation
To select torque control, set torque selection (D5-01) to “1,” or close the multi-func-
tion contact input set to speed/torque control (H1-XX = “71”) and set terminal 16 func-
tion selection to torque reference (H3-05 = “13”).
*1: When speed limit selection (D5-03) is set to “1,” the master frequency reference input from ter-
minal 13 or 14 becomes the speed limit; when speed limit selection (D5-03) is set to “2,” the set
value of D5-04 becomes the speed limit.
*2: When terminal 14 function selection is set to torque compensation (H3-09 = “14”), the terminal l4
set value can be used as the torque compensation value.
When torque reference > 0 and speed limit > 0 (winder application sequence), the fol-
lowing sequence is activated:
• When [-1 × speed limit bias (D5-05)] < motor speed (%) < [speed limit + D5-05],
torque control is activated using the set torque reference.
• When motor speed > [speed limit + D5-05], speed limiting circuit outputs a nega-
tive torque reference to prevent the motor speed from increasing.
• When motor speed < [-l × D5-05], the speed limiting circuit outputs a positive
torque reference to prevent the motor speed from increasing in the reverse direc-
tion.
D5-06 Speed/Torque Control Changeover Delay Timer A
Speed
1
1 + ST
Torque Limit
Iq
+
+
Figure 27 Torque Control Block Diagram
Limiting
Circuit
SFS
T = D5-02
+
Motor Speed
(D5-05)
Torque
Compensation *2
Torque
Reference
Speed Limit *1
Section D: Reference Parameters
D5 Torque Control