Remote Setting Function - Mitsubishi Electric FR-A800 Series Instruction Manual

 Variable-torque acceleration/deceleration (Pr.29 = "6")
• This function is useful for variable-torque load such as a fan and blower to accelerate/decelerate in short time.
Linear acceleration/deceleration is performed in the area where the output frequency > base frequency.
Output frequency
Set frequency
Pr.3 Base frequency
NOTE
• When the base frequency is out of the range 45 to 65 Hz, the linear acceleration/deceleration is performed even if Pr.29 = "6".
• Even if Pr.14 Load pattern selection = "1 (variable torque load)", variable torque acceleration/deceleration setting is
prioritized and the inverter operates as Pr.14 = "0 (constant torque load)".
• For the variable torque acceleration/deceleration time setting, set the time period to reach Pr.3 Base frequency. (Not the time
period to reach Pr.20 Acceleration/deceleration reference frequency.)
• The variable torque acceleration/deceleration is disabled during PM sensorless vector control. (Linear acceleration/
deceleration is performed.)
Parameters referred to
Pr.3 Base frequencypage 707
Pr.7 Acceleration time, Pr.8 Deceleration time, Pr.20 Acceleration/deceleration reference
Pr.10 DC injection brake operation
Pr.14 Load pattern
Pr.178 to Pr.189 (Input terminal function
5.8.3
Even if the operation panel is located away from the enclosure, contact signals can be used to perform continuous variable-
speed operation, without using analog signals.
Pr.
59 Remote function
F101 selection
 Remote setting function
• When Pr.59 ≠ "0" (remote setting enabled), the functions of the signals are as shown in the following table.
Signal name
STF/STR
RH
RM
RL
Terminal 2 (analog signal)
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[Variable-torque acceleration/deceleration]
Pr.7 Pr.8
Acceleration time Deceleration time
frequencypage 715
selectionpage 708
selection)page 521

Remote setting function

Initial Setting
Name
value
0
1
2
3
0
11
12
13
Function
Forward/Reverse
Acceleration
Deceleration
Clear
Main speed
search engine
Time
RH, RM, RL signal
range
function
Multi-speed setting
Remote setting
Remote setting
Remote setting
Remote setting
Remote setting
Remote setting
The inverter accelerates the motor in the forward or reverse direction up to
the main speed or to the frequency stored by the remote setting function.
The set frequency increases according to the Pr.44 setting.
The set frequency decreases according to the Pr.45 setting.
The set frequency is cleared and the main speed is applied.
The setting of the main speed is used as a base. The main speed is
increased by the RH signal and decreased by the RM signal.
5.8 (F) Setting of acceleration/deceleration time and acceleration/deceleration pattern
frequencypage 367
Description
Frequency setting
storage
—
Enabled
Disabled
Not available
Disabled
(Turning OFF the STF/STR
signal clears the remotely-
set frequency.)
Enabled
Disabled
Disabled
Available
(Turning OFF the STF/STR
signal clears the remotely-
set frequency.)
Description
1
2
3
4
5
6
7
8
9
10
Deceleration to the
main speed or lower
377
5. PARAMETERS