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Programming 48

The following figure shows the timing diagram of speed/torque selection.

Fig. 37 Speed / Torque Control Selection Timing Diagram

Timing Diagram Description

 When the speed/torque control selection contact is OFF, speed control is activated.

· Speed reference during speed control depends on the frequency reference selection (B1-01) setting. To use terminal A1

or A2 as the master frequency reference, set b1-0l to “l”.

· Torque limit during speed control is the smaller of the absolute value of terminal A3 torque limit, 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 maintained and the smaller of the absolute value of

terminal A3 torque limit, or the values 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 ON, torque control is activated.

· Speed limit during torque control is the master frequency reference at terminal A1 or A2 when speed limit selection (D5-

03) is set to “1”, and is the speed limit value (D5-04) when D5-03 = “2”, regardless of the frequency reference selection

(B1-01) setting.

· During torque control, the terminal A2 or A3 analog input value becomes the torque reference.

 By giving a stop command during torque control, operation changes to speed control automatically, and the motor

decelerates to stop. The torque limit during deceleration 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. Terminal A1 speed reference/speed limit and the terminal A2 or A3 torque limit/torque

reference are stored in the inverter until the time set to D5-06 elapses.

Speed Control Torque Control

Speed Control Torque Control Speed Control (decel to stop)

OFF ON OFF ON

STOP

RUN

Speed Reference Speed Limit

Torque Limit Torque Reference

Speed/Torque

Selection Command

(Terminal S8 Input)

Run Command

Control Method

Terminal A1 Input

Terminal A2 or A3 Input

Sequence

  

(H3-09 or H3-05 = 13)

YASKAWA CIMR-F7U4018 User Manual

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