Changing The Setting Range And Increments Of The Acceleration/Deceleration Time (Pr.21); Setting Multiple Acceleration/Deceleration Times (Rt Signal, Pr.44, Pr.45, Pr.147) - Mitsubishi Electric FR-F800 Instruction Manual

(F) Setting of acceleration/deceleration time and acceleration/deceleration pattern
Changing the setting range and increments of the acceleration/
deceleration time (Pr.21)
• Use Pr.21 to set the acceleration/deceleration time and minimum setting range.
Setting value "0" (initial value): 0 to 3600 s (minimum setting increments 0.1 s)
Setting value "1": 0 to 360 s (minimum setting increments 0.01 s)
NOTE
• Changing the Pr.21 setting changes the acceleration/deceleration time setting (Pr.7, Pr.8, Pr.16, Pr.44, Pr.45, Pr.264, Pr.265,
Pr.582, Pr.583, Pr.791, Pr.792, Pr.1477, Pr.1478). (The Pr. 611 Acceleration time at a restart setting is not affected.)
Setting multiple acceleration/deceleration times (RT signal, Pr.44, Pr.45,
Pr.147)
• Pr.44 and Pr.45 are valid when the RT signal is ON or when the output frequency is equal to or higher than the frequency
set in Pr.147 Acceleration/deceleration time switching frequency.
• Even at the frequency lower than the Pr.147 setting, turning ON the RT signal will switch the acceleration/deceleration time
to the second acceleration/deceleration time. The priority of the signals and settings is RT signal  Pr.147 setting.
• When "9999" is set in Pr. 45, the deceleration time becomes equal to the acceleration time (Pr. 44).
• If the Pr.147 setting is equal to or less than the Pr.10 DC injection brake operation frequency or the Pr.13 Starting
frequency setting, the acceleration/deceleration time switches to the Pr.44 (Pr.45) when the output frequency reaches or
exceeds the Pr.10 or Pr.13 setting.
Pr.147 setting
9999 (initial value)
0.00 Hz
0.01 Hz ≤ Pr.147 ≤ set frequency
Set frequency < Pr.147
Output frequency
(Hz)
Set
frequency
Pr. 7 Pr. 44
RT signal
• Switching frequency for each control method
Control method
V/F control
Advanced magnetic flux vector control
PM motor control
NOTE
• The reference frequency during acceleration/deceleration depends on the Pr.29 Acceleration/deceleration pattern
selection setting. (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 acts as the second function selection signal and makes the other second functions valid. (Refer to
• RT signal is assigned to the terminal RT in the initial status. Set "3" in any of Pr.178 to Pr.189 (input terminal function
selection) to assign the RT signal to another terminal.
Acceleration/deceleration time
Pr.7, Pr.8
Pr.44, Pr.45
Output frequency < Pr.147: Pr.7, Pr.8
Pr.147 ≤ output frequency: Pr.44, Pr.45
Pr.7, Pr.8
Pr. 44 Pr. 8
(Pr. 45)
ON
Switching frequency
Output frequency
Output frequency before the slip compensation.
Estimated speed converted as frequency
page 191.)
Description
Acceleration/deceleration time is not
automatically changed.
Second acceleration/deceleration time is
applied from the start.
Acceleration/deceleration time is
automatically changed.
Not changed as the frequency has not
reached the switchover frequency.
Time
page 333.)
189
PARAMETERS
5
GROUP
F