Mitsubishi Electric FR-E800, Instruction Manual

Page: 209 / 484

208
9. (F) Settings for Acceleration/Deceleration
9.5 Minimum motor speed frequency at the motor start up
9.5
Minimum motor speed frequency at the motor start
up
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.
 Starting frequency setting (Pr.13)
• The frequency where the PM 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 .
NOTE
• Under induction motor control (under V/F control, Advanced magnetic flux vector control, Real sensorless vector control, and
Vector control), the output starts at the frequency set in Pr.13 . Under PM sensorless vector control, the output always starts
at 0.01 Hz.
• The inverter does not start if the frequency setting signal has a value lower than that of Pr.13 . For example, while Pr.13 = 20
Hz, the inverter output starts when the frequency setting signal reaches 20 Hz.
Parameters referred to
Pr.2 Minimum frequency

page 253
Pr.7 Acceleration time

page 196
Pr. Name Initial value Setting range Description
13
F102
Starting frequency
Minimum frequency /
minimum rotations per minute
0 to 60 Hz
Set the frequency where the motor starts
running.
CAUTION
• Note that when Pr.13 is set to a value equal to or lower than 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.
PM PM PM
Output
frequency
(Hz)
Set frequency
Output
frequency
Output from 0.01Hz
Time
60
Pr.13
Setting range
STF ON
0