Mitsubishi Electric FR-F800 Series Instruction Manual page 232

NOTE
• The reference frequency during acceleration/deceleration depends on the setting of Pr.29 Acceleration/deceleration pattern
selection. (Refer to
• The RT signal can be assigned to an input terminal by setting Pr.178 to Pr.189 (Input terminal function selection). Changing
the terminal assignment may affect other functions. Set parameters after confirming the function of each terminal.
• The RT signal is the Second function selection signal. The RT signal also enables other second functions. (Refer to
• The RT signal is assigned to terminal RT in the initial status. Set "3" in one of Pr.178 to Pr.189 (Input terminal function
selection) to assign the RT signal to another terminal.
 Setting the acceleration/deceleration time in the low-speed range (Pr.791,
Pr.792)
• If torque is required in the low-speed range (less than 10% of the rated motor frequency) under PM motor control, set a
value larger than the setting of Pr.7 Acceleration time (Pr.8 Deceleration time) in Pr.791 Acceleration time in low-
speed range (Pr.792 Deceleration time in low-speed range) so that the mild acceleration/deceleration is performed in
the low-speed range. (When the RT signal is turned ON, the second acceleration/deceleration time is prioritized.)
Acceleration time
in low-speed range
Slope set by Pr. 791
NOTE
• Set Pr.791 (Pr.792) to a value larger than the Pr.7 (Pr.8) setting. If a value smaller than Pr.7 (Pr.8) is set in Pr.791 (Pr.792),
the Pr.791 (Pr.792) setting is regarded as the same setting as the Pr.7 (Pr.8) setting.
• Refer to
Parameters referred to
Pr.3 Base frequencypage 552
Pr.10 DC injection brake operation
Pr.29 Acceleration/deceleration pattern
Pr.125, Pr.126 (Frequency setting gain
Pr.178 to Pr.189 (Input terminal function
Pr.264 Power-failure deceleration time 1, Pr.265 Power-failure deceleration time
5.5.2
The acceleration/deceleration pattern can be set according to the application.
In addition, the backlash measures that stop acceleration/deceleration by the frequency or time set with parameters at
acceleration/deceleration can be set.
Pr.
29 Acceleration/deceleration pattern
F100 selection
140 Backlash acceleration stopping
F200 frequency
141 Backlash acceleration stopping
F201 time
142 Backlash deceleration stopping
F202 frequency
143 Backlash deceleration stopping
F203 time
Downloaded from ManualsNet.com
page 231.)
Acceleration time
Slope set by Pr.7
page 641 for the rated motor frequency of the MM-EFS or MM-THE4 motor.
frequencypage 560
selectionpage 231
frequency)page 357
selection)page 373
Acceleration/deceleration pattern
Name
search engine
Low-speed range
(rated motor frequency/10)
Time
Deceleration time
in low-speed range
Slope set by Pr.792
Deceleration time
Slope set by Pr.8
2page 478
Initial
Setting range
value
0 Linear acceleration/deceleration
1 S-pattern acceleration/deceleration A
0 2 S-pattern acceleration/deceleration B
3 Backlash measure
6 Variable-torque acceleration/deceleration
1 Hz 0 to 590 Hz
0.5 s 0 to 360 s
Set the stopping frequency and time during backlash
measures.
Valid by backlash measures (Pr.29 = "3").
1 Hz 0 to 590 Hz
0.5 s 0 to 360 s
5.5 (F) Setting of acceleration/deceleration time and acceleration/deceleration pattern
page 377.)
Description
5. PARAMETERS
1
2
3
4
5
6
7
8
9
10
231