Advertisement
The Easy and Compact Inverter
FR-F700PJ for
Energy Saving
General-
Easy
purpose Motor
Energy
and
and IPM Motor
Saving
Compact
Control
Suitable for Both the General-purpose Motor
(1) The F700PJ series for both a general
-purpose motor (IM) and an IPM motor (IPM)
•The IM drive setting can be switched to IPM drive setting by
only one setting "12" (MM-EFS) in the
parameter
. (Refer to page 77 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
control indicator
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
FR-F700PJ
Inverter
Drive unit
One spare inverter
Spare inverters for both
Inverter
Drive unit
(3) What is an IPM motor?
An IPM motor is a synchronous motor with strong permanent magnets embedded in its rotor.
Why is an IPM motor more efficient?
•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.
Stator coil
Stator core
Rotor core
Permanent magnet
1
IPM motor (MM-EFS)
and the IPM Motor
(Three-Phase Induction Motor)
(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
IPM motor
1st Stage
First, replace
inverters.
IM and IPM
driven by
one inverter
[ Comparison of motor losses ]
General-purpose motor
*
Example of 22kW motors
Iron loss
Primary copper
Premium high-efficiency
100%
loss (stator side)
Secondary copper
loss (rotor side)
Other
SF-JR
Motor structure (section view)
IPM motor (synchronous motor)
General-purpose motor (induction motor)
Stator coil
Stator coil
(three-phase coil)
(three-phase coil)
Stator core
N
S
S
S
N
N
Shaft
S
S
N
N
N
S
Rotor core
Permanent
Rotor conductor
*Example of
magnets
(copper or aluminum)
6-pole motor
Inverter Control for Energy Saving
(1) Energy saving with speed control
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.
[Example of blower operation characteristic]
120
Damper control
100
80
60
High-performance
energy-saving
40
motor driven with inverter
20
*1
0
*1: Rated motor output is 100%.
(3) To save more energy – the IPM motor control
High efficiency achieved with IPM motors
The IPM motors that have permanent magnets embedded in
their rotors are even more efficient than the high-performance
energy-saving motors.
[Comparison of efficiency]
100
Premium high-efficiency IPM
motor driven with inverter
95
90
Renewal
85
completed!
80
2nd Stage
75
Next, replace
70
General-purpose motor
motors.
65
0.75
Smooth replacement from a general-purpose
motor (with the same installation size)
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.
IPM motor
SF-JR 3.7kW
Iron loss
40%
Primary copper
loss
(4) Check the energy saving e ect at a glance
Other
MM-EFS
Energy saving monitor is available. The energy saving effect can
be checked using an operation panel, output terminal (terminal
FM), or network.
Stator core
Shaft
Rotor core
Example of the monitor
display for power saving
(2) Energy saving with Optimum
excitation control
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 37 for the details.)
General-purpose motor
driven with inverter
Premium high-efficiency
(Example: Pump)
IPM motor driven with inverter
40
60
80
100
Air volume (%)
[Comparison of
Mitsubishi products]
(MM-EFS series)
IE4-equivalent efficiency level
The premium high-efficiency IPM motor "MM-EFS series"
provides efficiency that is equivalent to IE4 (super premium
efficiency), the highest efficiency
*2: As of October 2012
IEC 60034-30
Efficiency class
IE4
(super premium
efficiency)*
3
IE3
High-performance energy-saving
(premium efficiency)
motor driven with inverter
driven with inverter
IE2
1.5
2.2
3.7
5.5
7.5
11
15
(high efficiency)
Motor capacity (kW)
[Comparison of
Mitsubishi products]
IE1
(standard efficiency)
Below the class
*3: The details of IE4 can be found in IEC 60034-31.
Same size
MM-EFS371M4
The output power amount measured by the inverter can be
output in pulses. The cumulative power amount can be easily
checked.*
4
*4: This function cannot be used as a meter to certify billings.
[List of monitored items for energy saving]
Power saving monitor (kW)
Power saving rate average value (%)
Power saving rate (%)
Power cost saving average value (yen)
Power saving amount (kWh)
Annual power saving amount (kWh)
Power cost saving (yen)
Annual power cost saving (yen)
Power saving average value (kW)
•
1
Features
(General-purpose motors)
•
Connection
7
example
•
Standard
Optimum excitation control
100
8
specs.
80
More energy saving
60
•
Outline
10
40
dimensions
V/F control
20
•
Terminal connection
0
20
40
60
80
100
diagrams
13
Motor load torque (%)
•
Terminal specs.
[Comparison of Mitsubishi products]
is now available
•
Operation panel
•
15
Parameter unit
•
FR Configurator
•
19
Parameter list
class*
2
.
•
Parameter
26
Efficiency of Mitsubishi motors
details
General-purpose motor
IPM motor
Premium high-
efficiency IPM
•
(MM-EFS)
Protective
46
functions
Super line
premium series
(SF-PR)
Super line
•
Options and
eco series
47
peripheral devices
(SF-HR)
•
Super line series
Precaution on
(SF-JR)
selection and operation
•
58
Precautions on
peripheral device
selection
•
Compatible
62
motor
•
IPM motor
66
control
•
Difference and
69
compatibility with
FR-F500 (L) series
•
Warranty
74
•
Global FA centers
2
Advertisement
