Mitsubishi QD70P4 User Manual

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MELSEC-Q
11 SUB FUNCTIONS
[2] Setting the speed limit function
To use the "speed limit function", set the "speed limit value" in the parameters
shown in the following table, and write it to the QD70.
(The "speed limit value" depends on the motor used. Set it according to the motor
used.)
The setting is made valid when the PLC READY signal [Y0] turns from OFF to
ON.
Setting item
Setting
value
Setting details
Factory-set
initial value
Pr. 5
Speed limit value Set the speed limit value (max. speed during control). 10000 (pulse/s)
Refer to section "4.2 List of parameters" for setting details.
11.3 Speed change function
The "speed change function" is designed to change the speed within the "
Pr. 5
Speed
limit value" range at any point during speed control of speed-position switching control
or during JOG operation.
Set a new speed in "
Cd. 7
New speed value" and make a speed change using "
Cd. 6
Speed change request".
The acceleration and deceleration times after a speed change are the values set in
"
Cd. 8
ACC/DEC time at speed change" and "
Cd. 9
DEC/STOP time at speed
change".
The details shown below explain about the "speed change function".
[1] Control details
[2] Precautions during control
[1] Control details
The following is the operation performed during a speed change for JOG
operation.
V
V1
V2
V3
t
Cd. 8
Deceleration made at
value set in
Cd. 9
Deceleration stop made at
value set in
JOG. 1 JOG speed
JOG. 2
JOG ACC time
Pr. 6
Bias speed
at start
OFF ON OFF
JOG start
Speed change to V2
Speed change to V3
Operation performed when speed
change is not made
Cd. 8
Acceleration made at
value set in
Fig. 11.1 Speed change operation
11

Mitsubishi QD70P4 Specifications

General

Brand	Mitsubishi
Model	QD70P4
Category	Controller
Language	English