Mitsubishi Electronics FR-F700-NA ユーザーズマニュアル
104
Setting of acceleration/deceleration time
and acceleration/deceleration pattern
4.7.2
Starting frequency and start-time hold function (Pr. 13, Pr. 571)
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 190)
You can set the starting frequency and hold the set starting frequency for a certain period of time.
Set these functions when you need the starting torque or want to smooth motor drive at a start.
Set these functions when you need the starting torque or want to smooth motor drive at a start.
Parameter
Number
Name
Initial Value
Setting Range
Description
13
Starting frequency
0.5Hz
0 to 60Hz
Frequency at start can be set in the
range 0 to 60Hz.
You can set the starting frequency
at which the start signal is turned
ON.
range 0 to 60Hz.
You can set the starting frequency
at which the start signal is turned
ON.
571
Holding time at a start
9999
0.0 to 10.0s
Set the holding time of Pr. 13
Starting frequency.
Starting frequency.
9999
Holding function at a start is invalid
(1) Starting frequency setting (Pr. 13)
⋅ Frequency at start can be set in the range 0 to 60Hz.
⋅ You can set the starting frequency at which the start signal is
⋅ You can set the starting frequency at which the start signal is
turned ON.
CAUTION
The inverter will not start if the frequency setting signal is less than the value set in Pr. 13.
For example, when 5Hz is set in Pr. 13, the motor will not start running until the frequency setting signal reaches 5Hz.
For example, when 5Hz is set in Pr. 13, the motor will not start running until the frequency setting signal reaches 5Hz.
(2) Start-time hold function (Pr. 571)
⋅ This function holds the output frequency set in Pr. 13 Starting
frequency during the period set in Pr. 571.
⋅ This function performs initial excitation to smooth the motor
drive at a start.
CAUTION
⋅ When the start signal was turned OFF during start-time hold, deceleration is started at that point.
⋅ At switching between forward rotation and reverse rotation, the starting frequency is valid but the start-time hold function is
⋅ At switching between forward rotation and reverse rotation, the starting frequency is valid but the start-time hold function is
invalid.
CAUTION
Note that when Pr. 13 is set to any value lower than Pr. 2 Minimum frequency, simply turning ON the start signal
will run the motor at the preset frequency even if the command frequency is not input.
will run the motor at the preset frequency even if the command frequency is not input.
♦ Parameters referred to ♦
Pr.2 Minimum frequency
Refer to page 87
Output
frequency
(Hz)
frequency
(Hz)
Time
60
Pr.13
Setting range
STF
ON
0
Output
frequency
(Hz)
frequency
(Hz)
Time
Pr. 13
Pr. 571 setting time
STF
ON
0
60
Setting range
REMARKS
When Pr. 13 = "0Hz", the starting frequency is held at 0.01Hz.