Explanations Of Parameters; Manual Torque Boost; Maximum/Minimum Frequency; Base Frequency, Voltage - Mitsubishi Electric FR-F700 Manual

Explanations of Parameters

Pr. Pr.

Manual torque boost

0 46
Pr.0 Torque boost
You can compensate for a voltage drop in the low-frequency region
to improve motor torque reduction in the low-speed region.
Motor torque in the low-frequency range can be adjusted to the
load to increase the starting motor torque.
The starting torque boost can be changed by switching terminal RT.
When simple magnetic flux vector control is selected in Pr. 80, the
settings of Pr. 0 and Pr. 46 are invalid.
100%
Output
voltage
Pr.0
Setting
Pr.46
range
Output frequency(Hz)
0
Maximum/minimum
Pr. Pr.
1, 2 18
frequency
Pr.1 Maximum frequency
Pr.18 High speed maximum frequency
You can limit the motor speed.
Clamp the upper and lower limits of the output frequency.
When you want to perform operation above 120Hz, set the upper
limit of the output frequency to Pr. 18 .
(When Pr. 18 is set, Pr. 1 automatically switches to the frequency
of Pr. 18. When Pr. 1 is set, Pr. 18 is automatically changed to the
frequency set in Pr. 1.)
Output frequency
(Hz)
Pr.1
Pr.18
Pr.2
0
(4mA)
Clamped at the
minimum frequency
Pr. Pr.

Base frequency, voltage

3 19, 47
Pr.3 Base frequency
Pr.19 Base frequency voltage
Used to adjust the inverter outputs (voltage, frequency) to the motor rating.
When operating a standard motor, generally set the rated frequency of
the motor to Pr. 3 Base frequency. When running the motor using
commercial power supply-inverter switch-over operation, set Pr. 3 to
the same value as the power supply frequency.
When you want to change the base frequency when switching multiple
motors with one inverter, use the Pr. 47 Second base frequency.
Use Pr. 19 Base frequency voltage to set the base voltage (e.g. rated
motor voltage).
Pr.19
indicates simple mode parameters and
Pr.
Pr.46 Second torque boost
When using
Pr.0 Initial
the constant
Value
torque motor
0.75K 6% ←
1.5K to 3.7K 4% ←
5.5K, 7.5K 3% 2%*
←
11K to 37K 2%
←
45K, 55K 1.5%
75K or more 1% ←
Base
* If the initial set Pr. 71 value
frequency
is changed to the setting
for use with a constant-
torque motor, the Pr. 0
setting changes to the
corresponding value in
above.
Pr.2 Minimum frequency
Clamped at the
maximum frequency
Frequency setting
5, 10V
(20mA)
Pr.47 Second V/F (base frequency)
Output frequency
(Hz)
Pr.3
Pr.47
indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions.
Pr.
Pr. Pr. Pr.
4 to 6
Multi-speed setting operation
Pr.4 Multi-speed setting (high speed)
Pr.6 Multi-speed setting (low speed)
Pr.24 Multi-speed setting (speed4)
Pr.26 Multi-speed setting (speed 6)
Pr.232 Multi-speed setting (speed 8)
Pr.234 Multi-speed setting (speed 10)
Pr.236 Multi-speed setting (speed 12)
Pr.238 Multi-speed setting (speed 14)
Can be used to change the preset speed in the parameter with
the contact signals.
Any speed can be selected by merely turning on-off the contact
signals (RH, RM, RL, REX signals).
The inverter operates at frequencies set in Pr. 4 when RH signal is
on, Pr. 5 when RM signal is on and Pr. 6 when RL signal is on.
Frequency from speed 4 to speed 15 can be set according to the
combination of the RH, RM, RL and REX signals. Set the running
frequencies to Pr. 24 to Pr. 27, Pr. 232 to Pr. 239. (In the initial value
setting, speed 4 to 15 are unavailable.)
Speed 1
(High speed)
Speed 5
Speed 2
Speed 6
(Middle speed)
Speed 4
Speed 3
(Low speed)
ON ON ON ON
RH
ON ON ON ON
RM
ON ON ON
RL
*1 When turning RH, RM and RL off and REX on with "9999" set in Pr. 232
"multi speed setting (8 speed), the inverter operates at frequency set in
Pr. 6.
Pr. Pr.
7, 8 20, 21, 44, 45
Acceleration/deceleration time setting
Pr.7 Acceleration time
Pr.20 Acceleration/deceleration reference frequency
Pr.21 Acceleration/deceleration time increments
Pr.45 Second deceleration time
Used to set motor acceleration/deceleration time.
Set a larger value for a slower speed increase/decrease or a
smaller value for a faster speed increase/decrease.
Use Pr. 7 Acceleration time to set the acceleration time required to
reach Pr. 20 Acceleration/deceleration reference frequency from 0Hz.
Use Pr. 8 Deceleration time to set the deceleration time required to
stop from the Pr. 20 Acceleration/deceleration reference frequency.
Pr.20
(60Hz)
Running
frequency
(initial value)
Time
Deceleration
Acceleration Pr.7 Pr.8
time time
24 to 27, 232 to 239
Pr.5 Multi-speed setting (middle speed)
Pr.25 Multi-speed setting (speed 5)
Pr.27 Multi-speed setting (speed 7)
Pr.233 Multi-speed setting (speed 9)
Pr.235 Multi-speed setting (speed 11)
Pr.237 Multi-speed setting (speed 13)
Pr.239 Multi-speed setting (speed 15)
Speed 10
Speed 11
Speed 12
Speed 9
Speed 13
Speed 8
Speed 14
Speed 15
Speed 7
ON ON ON ON
Time
RH
ON ON ON ON
RM
ON ON ON ON
RL
ON ON ON ON ON ON ON ON
REX
*1
Pr.8 Deceleration time
Pr.44 Second acceleration/deceleration time
Pr.21
Description
Setting
Increments:
0 0.1s
Increments and
Range: setting range of
0 to 3600s
acceleration/
deceleration
Increments:
time setting can
0.01s
1
be changed.
Range:
0 to 360s
Time
28