Yaskawa VS-616PS5 Series Programming Manual - Manual (Page 43)

VS-616PS5 Programming Manual 43
Sequence Description
• When the speed/torque control selection contact is OPEN, speed control is acti-
vated:
• Speed reference during speed control depends on the frequency reference
selection (B1-01) setting. To use terminal 13 or 14 as the master frequency ref-
erence, set Bl-0l to “l.”
• Torque limit during speed control is the smaller of the absolute value of terminal
16 torque limit (H3-05 = 13), or the values set in the torque limit parameters (L7-
01 to L7-04).
• When a stop command is given during speed control, speed control is main-
tained and the smaller of the absolute value of terminal l6 torque limit, or the val-
ues set in the torque limit parameters (L7-01 to L7-04), is used as the torque
limit. Then the motor decelerates to stop.
‚ When the speed/torque control selection contact is CLOSED, torque control is
activated:
• Speed limit during torque control is:
• the master frequency reference at terminal 13 or 14 when speed limit selection
(D5-03) is set to “1”
• the speed limit value (D5-04) when D5-03 = “2,” regardless of the frequency ref-
erence selection (B1-01) setting.
• During torque control, the terminal 16 analog input value becomes the torque
reference.
ƒ By giving a stop command during torque control, operation changes to speed con-
trol automatically, and the motor decelerates to stop. The torque limit during deceler-
ation to stop becomes the values set in the torque limit parameters (L7-01 to L7-04).
Note:The control mode actually changes after the speed/torque control selection command changes and
after the reference delay timer (D5-06) elapses. The terminal 13 speed reference/speed limit and the
terminal 16 torque limit/torque reference are stored in the inverter until the time set to D5-06 passes.
Speed Control Torque Control Speed Control Torque Control Speed Control (decel to stop)
OFF ON OFF ON
STOP RUN
Speed Reference Speed Limit Speed Reference Speed Limit
Torque Limit Torque Reference Torque Limit Torque Reference
Speed/Torque
Selection Command
(Terminal 8 Input)
Run Command
Control Method
Terminal 13 Input
Terminal 16 Input
Sequence
• ‚ • ‚ ƒ
Figure 28 Speed/Torque Control Selection Timing Diagram
Section D: Reference Parameters
D5 Torque Control