Starting Frequency And Start-Time Hold Function - Mitsubishi Electric FR-A700 Instruction Manual

Parameter
6.11.2

Starting frequency and start-time hold function

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.
Pr.
Name
No.
13
Starting frequency
571
Holding time at start
Starting frequency setting (Pr. 13)
The motor is started with the specified start frequency as soon as the frequency inverter
receives a start signal and a frequency setting that is greater than or equal to the preset starting
frequency.
frequency [Hz]
Forward rotation
NOTE The inverter will not start if the frequency setting signal is less than the value set in Pr. 13.
Example
When 5Hz is set in Pr. 13, the motor will not start running until the frequency setting signal
reaches 5Hz.
m
WARNING:
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.
FR-A700 EC
Initial Value Setting Range Description
0.5Hz 0–60Hz
0.0–10.0s
9999
9999
Hz
Output
60
Pr.13
0
ON
Frequency at start can be set in
the range 0 to 60Hz.
You can set the starting fre-
quency at which the start signal
is turned on.
Set the holding time of Pr. 13
"Starting frequency".
Holding function at a start is
invalid
Fig. 6-78:
Starting frequency parameter
t
Acceleration and deceleration
Parameters referred to
2 Minimum
frequency
Refer to
Section
6.8.1
I000008C
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