Mitsubishi Electric FR-V500 Instruction Manual page 88

Parameter Name
7 Acceleration time
8 Deceleration time
Acceleration/
20 deceleration
reference speed
Acceleration/
21 deceleration time
increments
Second
44 acceleration/
deceleration time
Second
45
deceleration time
Third acceleration/
110
deceleration time
Third deceleration
111
time
<Setting>
• Use Pr. 21 to set the acceleration/deceleration time and minimum setting range.
Value "0" (factory setting) 0 to 3600s (minimum setting increments: 0.1s)
Value "1" 0 to 360s (minimum setting increments: 0.01s)
Changing the Pr. 21 value changes the setting of Pr. 7, Pr. 8, Pr. 44, Pr. 45, Pr. 110 and Pr. 111.
CAUTION
Changing the Pr. 21 setting changes the acceleration/deceleration time setting (Pr. 7, Pr. 8, Pr. 16, Pr. 44,
Pr. 45, Pr. 110, Pr. 111)
<Example>
When Pr.21="0" and the setting of Pr.7="5.0"s, and if the setting of Pr.21 is changed to "1", the setting
value of Pr.7 will change to "0.5"s.
• Use Pr. 7, Pr. 44 and Pr. 110 to set the acceleration time taken to reach the speed set in Pr. 20 from 0r/min.
• Use Pr. 8, Pr. 45 and Pr. 111 to set the deceleration time taken to reach 0r/min from the speed set in Pr. 20.
• Use Pr. 180 to Pr. 183 and Pr. 187 to assign the terminals used to input the RT and X9 signals.
CAUTION
• Pr. 44 and Pr. 45 are valid when the RT signal is on.
When the RT signal is on, the other second functions (Pr. 450 to Pr. 454, Pr. 815, Pr. 830 to Pr. 837) are
also valid.
• Pr. 110 and Pr. 111 are valid when the X9 signal is on.
When the X9 signal is on, Pr. 820 to Pr. 827 are also valid.
• When both RT and X9 are on, Pr. 110 and Pr. 111 are valid.
• Switching the RT and X9 signals during operation does not change the acceleration/deceleration time
imediately when position control is exercised with the conditional position control function (Pr. 419 =
"0") by the contact input.
REMARKS
• Changing the Pr. 20 "acceleration/deceleration reference speed" setting does not adjust the speed gain setting signal. To
adjust the gain, adjust the calibration function (Pr. 903).
• When the setting of Pr. 7, Pr. 8, Pr. 44, Pr. 45, Pr. 110 or Pr. 111 is 0.03 or less under V/F control, the acceleration/
deceleration time is 0.04s.
• However short the acceleration/deceleration time setting is, the actual motor acceleration/deceleration time cannot be made
shorter than the shortest acceleration/deceleration time that is determined by the mechanical system J (moment of inertia)
and the motor torque.
Related parameters
• Jog acceleration/deceleration time ⇒ Pr. 16 "jog acceleration/deceleration time" (Refer to page 85.)
• RT signal, X9 signal setting ⇒ Pr. 180 to Pr. 183, Pr. 187 (input terminal function selection) (Refer to page 150.)
Setting
Factory Setting
Range
5s/15s 0 to 3600s
(5.5K or less/7.5K or
0 to 360s
more)
5s/15s 0 to 3600s
(5.5K or less/7.5K or
0 to 360s
more)
1 to 3600
1500r/min
r/min
0 0, 1
0 to 3600s
5s
0 to 360s
0 to 3600s
0 to 360s
9999
9999
0 to 3600s
5s
0 to 360s
0 to 3600s
0 to 360s
9999
9999
79
Basic functions (Pr. 0 to Pr. 9)
Remarks
Simple mode
Simple mode
Extended mode
0: 0 to 3600s
Extended mode
1: 0 to 360s
Pr. 21 = 0
Extended mode
Pr. 21 = 1
Pr. 21 = 0
Pr. 21 = 1
Extended mode
Acceleration time =
deceleration time
Pr. 21 = 0
Extended mode
Pr. 21 = 1
Pr. 21 = 0
Pr. 21 = 1
Extended mode
Acceleration time =
deceleration time
3