Minimum Motor Speed Frequency At The Motor Start Up - Mitsubishi Electric FR-F820-00046 Instruction Manual

Fr-f800 series
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• This function performs initial excitation to smooth the motor drive at a start.
Output
frequency
(Hz)
60
Pr.13
0
Pr. 571 setting time
STF
ON
NOTE
• When Pr.13 = 0 Hz, the starting frequency is held at 0.01 Hz.
• 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
disabled.
CAUTION
• Note that when Pr.13 is set to a value equal to or lower than the setting of Pr.2 Minimum frequency, simply turning ON
the start signal runs the motor at the frequency set in Pr.2 even if the command frequency is not given.
Parameters referred to
Pr.2 Minimum
frequencypage 271
5.5.5
Minimum motor speed frequency at the motor start
up
PM
PM
PM
Set the frequency where the PM motor starts running.
Set the deadband in the low-speed range to eliminate noise and offset deviation when setting a frequency with analog input.
Pr.
Name
13
Starting frequency
F102
 Starting frequency setting (Pr.13)
• The frequency where the IPM motor starts running can be set in the range of 0 to 60 Hz.
• When the frequency command specifies the frequency less than the one set in Pr.13 Starting frequency, the PM motor
is stopped.
When the frequency command specifies the frequency equal to the set frequency or higher, the PM motor accelerates
according to the setting of Pr.7 Acceleration time.
Output
frequency
(Hz)
60
Set frequency
Pr.13
0
Output from 0.01Hz
STF
ON
226
5. PARAMETERS
5.5 (F) Setting of acceleration/deceleration time and acceleration/deceleration pattern
Time
Initial value
Setting range
Minimum
frequency /
0 to 60 Hz
Minimum rotations
per minute
Output
frequency
Time
Description
Set the frequency where the motor starts
running.

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