beautypg.com

Explanations of parameters, Manual torque boost, Maximum/minimum frequency – MITSUBISHI ELECTRIC INVERTER FR-F700 User Manual

Page 27: Base frequency, voltage, Multi-speed setting operation, Acceleration/deceleration time setting, 4 to

background image

Features

Standard

Specifications

Outline

Dimension

Drawings

Operation

Panel

Protective

Functions

Options

Instructions

Motor

Compatibility

W

arranty

Inquiry

Peripheral Devices

Why energy

savings?

Te

rminal Connection

Diagram

Te

rminal Specification

Explanation

Parameter

List

Explanations

of

Parameters

28

indicates simple mode parameters and

indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions.

Pr.

Pr.

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.

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.)

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).

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.)

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.

Manual torque boost

Pr.46 Second torque boost

Pr.0 Initial

Value

When using

the constant

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%

* If the initial set Pr. 71 value

is changed to the setting

for use with a constant-

torque motor, the Pr. 0

setting changes to the

corresponding value in

above.

Maximum/minimum
frequency

Pr.18 High speed maximum frequency

Base frequency, voltage

Pr.19 Base frequency voltage

Pr.47 Second V/F (base frequency)

Pr.

0

Pr.

46

Pr.0 Torque boost

Output
voltage

Pr.0
Pr.46

Setting
range

Base
frequency

0

100%

Output frequency(Hz)

Pr.

1, 2

Pr.

18

Pr.1 Maximum frequency

Pr.2 Minimum frequency

Output frequency
(Hz)

Pr.1
Pr.18

Pr.2

Frequency setting

Clamped at the
maximum frequency

Clamped at the
minimum frequency

5, 10V

(20mA)

0

(4mA)

Pr.

3

Pr.

19, 47

Pr.3 Base frequency

Pr.19

Output voltage (V)

Output frequency
(Hz)

Pr.3
Pr.47

Multi-speed setting operation

Pr.24 Multi-speed setting (speed4)

Pr.25 Multi-speed setting (speed 5)

Pr.26 Multi-speed setting (speed 6)

Pr.27 Multi-speed setting (speed 7)

Pr.232 Multi-speed setting (speed 8)

Pr.233 Multi-speed setting (speed 9)

Pr.234 Multi-speed setting (speed 10)

Pr.235 Multi-speed setting (speed 11)

Pr.236 Multi-speed setting (speed 12)

Pr.237 Multi-speed setting (speed 13)

Pr.238 Multi-speed setting (speed 14)

Pr.239 Multi-speed setting (speed 15)

*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.

Acceleration/deceleration time setting

Pr.20 Acceleration/deceleration reference frequency
Pr.21 Acceleration/deceleration time increments

Pr.44 Second acceleration/deceleration time

Pr.45 Second deceleration time

Pr.

4 to

Pr.

6

Pr.

24 to 27, 232 to 239

Pr.4 Multi-speed setting (high speed)

Pr.5 Multi-speed setting (middle speed)

Pr.6 Multi-speed setting (low speed)

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

Output frequency (Hz)

Speed 1

(High speed)

Speed 2
(Middle speed)

Speed 3
(Low speed)

Speed 4

Speed 5

Speed 6

Speed 7

Time

RH

RM

RL

Time

Speed 8

ON

ON

ON ON ON ON ON ON

ON

ON

ON

ON

ON ON

ON ON

ON ON ON ON

RH

RM

RL

REX

Output frequency

(Hz)

*1

Speed 9

Speed 10

Speed 11

Speed 12

Speed 13

Speed 14

Speed 15

Pr.

7, 8

Pr.

20, 21, 44, 45

Pr.7 Acceleration time

Pr.8 Deceleration time

Running
frequency

Acceleration
time

Deceleration
time

Time

Pr.20

Pr.7

Pr.8

Output

frequency

(Hz)

(60Hz)

Pr.21

Setting

Description

0

(initial value)

Increments:
0.1s
Range:
0 to 3600s

Increments and
setting range of
acceleration/
deceleration
time setting can
be changed.

1

Increments:
0.01s
Range:
0 to 360s

Explanations of Parameters