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The Easy and Compact Inverter

FR-F700PJ for

Energy Saving

Easy

and

Compact

Energy

Saving

General-

purpose Motor

and IPM Motor

Control

Suitable for Both the General-purpose Motor

(Three-Phase Induction Motor)

and the IPM Motor

(1) The F700PJ series for both a general

-purpose motor (IM) and an IPM motor (IPM)

IPM motor

control indicator

•

The IM drive setting can be switched to IPM drive setting by
only one setting "12" (MM-EFS) in the
parameter . (Refer to page 80 for details.)

Never drive an IPM motor in the IM drive setting.

•

One spare F700PJ inverter is enough for the two
types of motors (IM and IPM); the number of
required spare inverters is reduced by half.

•

A push on the setting dial in the monitor mode
brings up the control setting (IM, IPM).

Before

Now…

Future

Inverter

Drive unit

FR-F700PJ

Spare inverters for both

One spare inverter

IM and IPM

driven by

one inverter

(2) Simple and reliable transition from

IM to IPM

There is no need to replace the whole system at once; replace the
inverters first, then replace the motors.
When the budget is limited, equipment investment can be made over
several stages.

Equipment Investment in Stages

First, replace

inverters.

Next, replace

motors.

1st Stage

2nd Stage

Renewal

completed!

(3) What is an IPM motor?

An IPM motor is a synchronous motor with strong permanent magnets embedded in its rotor.

•No current ﬂows to the rotor (secondary side), and no secondary copper loss is generated.
•Magnetic ﬂux is generated with permanent magnets, and less motor current is required.
•Embedded magnets provide reluctance torque

, which can be used for driving.

: Reluctance torque occurs due to magnetic imbalance in the rotor.

General-purpose motor (induction motor)

IPM motor (synchronous motor)

Rotor conductor

(copper or aluminum)

Stator core

Shaft

Rotor core

Stator coil

(three-phase coil)

Stator coil

(three-phase coil)

Permanent

magnets

Shaft

Stator core

Rotor core

Example of

6-pole motor

N
S

Stator core

Stator coil

Rotor core

Permanent magnet

Motor structure (section view)

Why is an IPM motor more efficient?

IPM motor (MM-EFS)

Example of 22kW motors

[ Comparison of motor losses ]

100%

Iron loss

Primary copper

loss (stator side)

Secondary copper

loss (rotor side)

Other

General-purpose motor

Primary copper

loss

Iron loss

Other

Premium high-efficiency

IPM motor

40%

SF-JR

MM-EFS

100

0.75

1.5

2.2

3.7

5.5

7.5

Inverter Control for Energy Saving

(1) Energy saving with speed control

(3) To save more energy – the IPM motor control

(MM-EFS series)

is now available

The consumed power of a variable-torque load, such as fans, pumps,
and blowers, is proportional to the cube of its rotation speed.
This means that controlling the rotation speed to adjust the air
volume can lead to energy saving.

The IPM motors that have permanent magnets embedded in
their rotors are even more efficient than the high-performance
energy-saving motors.

(4) Check the energy saving effect at a glance

Energy saving monitor is available. The energy saving effect can

be checked using an operation panel, output terminal (terminal
FM), or network.

The output power amount measured by the inverter can be
output in pulses. The cumulative power amount can be easily

checked.

[List of monitored items for energy saving]

Power saving monitor (kW)
Power saving rate (%)
Power saving amount (kWh)
Power cost saving (yen)
Power saving average value (kW)

Power saving rate average value (%)
Power cost saving average value (yen)
Annual power saving amount (kWh)
Annual power cost saving (yen)

Example of the monitor

display for power saving

High efficiency achieved with IPM motors

The frame number of the MM-EFS is the same (same size) as
the Mitsubishi general-purpose motors (4-pole SF-JR/SF-HR
series). Replacement is easy as the installation sizes are
compatible.

Smooth replacement from a general-purpose

motor (with the same installation size)

The premium high-efficiency IPM motor "MM-EFS series"
provides efficiency that is equivalent to IE4 (super premium
efficiency), the highest efficiency class

IE4-equivalent efficiency level

[Comparison of efficiency]

Motor capacity (kW)

General-purpose motor

driven with inverter

High-performance energy-saving

motor driven with inverter

Premium high-efficiency IPM

motor driven with inverter

(2) Energy saving with Optimum

excitation control

(General-purpose motors)

The optimum excitation control achieves the highest motor

efficiency. Further energy saving can be achieved for
applications such as fans and pumps with variable load torque.
(Refer to page 40 for the details.)

(Example: Pump)

Same size

SF-JR 3.7kW

MM-EFS371M4

IEC 60034-30

Efficiency class

Efficiency of Mitsubishi motors

General-purpose motor

IPM motor

IE4

(super premium

efficiency)