Mitsubishi FR-S520-0.1K to 3.7K(-R)(-C), FR-S520-0.1K to 3.7K-NA(R), FR-S520S-0.2K to 1.5K-EC(R), FR-S520S-0.1K to 1.5K(-R) Instruction Manual

TRANSISTORIZED INVERTER

FR-

S

500

INSTRUCTION MANUAL (BASIC)

FR-S520-0.1K to 3.7K(-R)(-C)
FR-S520-0.1K to 3.7K-NA(R)
FR-S520S-0.1K to 1.5K(-R)
FR-S520S-0.2K to 1.5K-EC(R)

Thank you for choosing this Mitsubishi Transistorized inverter.
If this is the first time for you to use the FR-S500 series, please read through
this instruction manual (basic) carefully and use the inverter safely.
If you are going to use the inverter for higher-level applications, the FR-S500
instruction manual (detailed) [IB(NA)-0600027] is separately available from
where you purchased the inverter or your Mitsubishi sales representative.

CONTENTS

1. CONNECTION OF PERIPHERAL DEVICES......................................2

2. INSTALLATION METHOD ..................................................................4

3. SPECIFICATIONS OF WIRING AND TERMINALS............................5

4. OPERATION/CONTROL...................................................................15

5. ADJUSTMENT OF THE FREQUENCY SETTING

POTENTIOMETER AND INDICATOR..............................................21

6. FUNCTION LIST ...............................................................................25

7. ERRORS AND PROTECTIVE FUNCTIONS.....................................37

8. SPECIFICATIONS.............................................................................40

9. OUTLINE DRAWINGS......................................................................44

Appendix 1 Instructions for Compliance with the European
Appendix 2 Instructions for compliance with U.S. and Canadian

Standards...........................................................................46

Electrical Codes..................................................................48

This instruction manual (basic) provides handling information and precautions for
use of the equipment.
Please forward this instruction manual (basic) to the end user.
This instruction manual uses the International System of Units (SI). The
measuring units in the yard and pound system are indicated in parentheses as
reference values.

This section is specifically about safety matters

Do not attempt to install, operate, maintain or inspect the inverter until you have
read through this instruction manual (basic) and appended documents carefully
and can use the equipment correctly. Do not use the inverter until you have a
full knowledge of the equipment, safety information and instructions.
In this instruction manual (basic), the safety instruction levels are classified into
"WARNING" and "CAUTION".

WARNING

Assumes that incorrect handling may cause hazardous
conditions, resulting in death or severe injury.

CAUTION

Note that even the CAUTION level may lead to a serious consequence
according to conditions. Please follow the instructions of both levels because
they are important to personnel safety.

1. Electric Shock Prevention

Assumes that incorrect handling may cause hazardous
conditions, resulting in medium or slight injury, or may
cause physical damage only.

WARNING

! While power is on or when the inverter is running, do not open the front

cover. You may get an electric shock.

! Do not run the inverter with the front cover removed. Otherwise, you may

access the exposed high-voltage terminals or the charging part of the
circuitry and get an electric shock.

! If power is off, do not remove the front cover except for wiring or periodic

inspection. You may access the charged inverter circuits and get an electric
shock.

! Before starting wiring or inspection, check for residual voltages with a meter

etc. more than 10 minutes after power-off.

! Earth the inverter.
! Any person who is involved in the wiring or inspection of this equipment

should be fully competent to do the work.

! Always install the inverter before wiring. Otherwise, you may get an electric

shock or be injured.

! Perform setting dial and key operations with dry hands to prevent an electric

shock.

! Do not subject the cables to scratches, excessive stress, heavy loads or

pinching. Otherwise, you may get an electric shock.

! Do not change the cooling fan while power is on.

It is dangerous to change the cooling fan while power is on.

! When you have removed the front cover, do not touch the connector above

the 3-digit monitor LED display. Doing so can cause an electric shock.

A - 1

2. Fire Prevention

CAUTION

! Mount the inverter to incombustible material. Mounting it to or near

combustible material can cause a fire.

! If the inverter has become faulty, switch off the inverter power. A continuous

flow of large current could cause a fire.

! Do not connect a resistor directly to the DC terminals P(+), N(−). This could

cause a fire.

3. Injury Prevention

CAUTION

! Apply only the voltage specified in the instruction manual to each terminal to

prevent damage etc.

! Ensure that the cables are connected to the correct terminals. Otherwise,

damage etc. may occur.

! Always make sure that polarity is correct to prevent damage etc.
! While power is on and for some time after power-off, do not touch the inverter

or brake resistor as they are hot and you may get burnt.

4. Additional instructions
Also note the following points to prevent an accidental failure, injury, electric
shock, etc.
(1) Transportation and installation

CAUTION

! When carrying products, use correct lifting gear to prevent injury.
! Do not stack the inverter boxes higher than the number recommended.
! Ensure that installation position and material can withstand the weight of the

inverter. Install according to the information in the Instruction Manual.

! Do not operate if the inverter is damaged or has parts missing.
! When carrying the inverter, do not hold it by the front cover or setting dial; it

may fall off or fail.

! Do not stand or rest heavy objects on the inverter.
! Check the inverter mounting orientation is correct.
! Prevent screws, wire fragments, other conductive bodies, oil or other

flammable substances from entering the inverter.

! Do not drop the inverter, or subject it to impact.

A - 2

CAUTION

! Use the inverter under the following environmental conditions:

Ambient
temperature

Ambient humidity 90%RH or less (non-condensing)

Storage
temperature

Ambience

Environment

Altitude,
vibration

*Temperatures applicable for a short time, e.g. in transit.

(2) Wiring

-10°C to + 50°C (14°F to 122°F) (non-freezing)

-20°C to +65°C (-4°F to 149°F) *
Indoors (free from corrosive gas, flammable gas,

oil mist, dust and dirt)
Maximum 1000m (3280.80feet) above sea level
for standard operation. After that derate by 3% for
every extra 500m (1640.40feet) up to 2500m
(8202.00feet) (91%).

2

5.9m/s

or less (conforming to JIS C0911)

CAUTION

! Do not fit capacitive equipment such as power factor correction capacitor,

radio noise filter or surge suppressor to the output of the inverter.

! The connection orientation of the output cables U, V, W to the motor will

affect the direction of rotation of the motor.

(3) Trial run

CAUTION

! Check all parameters, and ensure that the machine will not be damaged by a

sudden start-up.

(4) Operation

WARNING

! When you have chosen the retry function, stay away from the equipment as it

will restart suddenly after an alarm stop.

! The [STOP] key is valid only when the appropriate function setting has been

made. Prepare an emergency stop switch separately.

! Make sure that the start signal is off before resetting the inverter alarm. A

failure to do so may restart the motor suddenly.

! The load used should be a three-phase induction motor only. Connection of

any other electrical equipment to the inverter output may damage the
equipment.

! Do not modify the equipment.

A - 3

CAUTION

! The electronic overcurrent protection does not guarantee protection of the

motor from overheating.

! Do not use a magnetic contactor on the inverter input for frequent

starting/stopping of the inverter.

! Use a noise filter to reduce the effect of electromagnetic interference.

Otherwise nearby electronic equipment may be affected.

! Take measures to suppress harmonics. Otherwise power harmonics from the

inverter may heat/damage the power capacitor and generator.

! When parameter clear or all clear is performed, each parameter returns to

the factory setting. Re-set the required parameters before starting operation.

! The inverter can be easily set for high-speed operation. Before changing its

setting, fully examine the performances of the motor and machine.

! In addition to the inverter's holding function, install a holding device to ensure

safety.

! Before running an inverter which had been stored for a long period, always

perform inspection and test operation.

(5) Emergency stop

CAUTION

! Provide a safety backup such as an emergency brake which will prevent the

machine and equipment from hazardous conditions if the inverter fails.

(6) Maintenance, inspection and parts replacement

CAUTION

! Do not carry out a megger (insulation resistance) test on the control circuit of

the inverter.

(7) Disposing of the inverter

CAUTION

! Treat as industrial waste.

(8) General instructions

Many of the diagrams and drawings in this instruction manual (basic) show the
inverter without a cover, or partially open. Never run the inverter in this status.
Always replace the cover and follow this instruction manual (basic) when
operating the inverter.

A - 4

Japanese Power Supply Harmonic Suppression Guideline

r

The "harmonic suppression guideline for household appliances and general­purpose products" issued by the Ministry of International Trade and Industry in
September, 1994 applies to the FR-S500 series. By installing the FR-BEL or FR­BAL power factor improving reactor, this product complies with the "harmonic
suppression techniques for transistorized inverters (input current 20A or less)"
established by the Japan Electrical Manufacturers' Association.

Product Checking and Parts Identification

Unpack the inverter and check the capacity plate on the front cover and the rating
plate on the inverter side face to ensure that the product agrees with your order
and the inverter is intact.

Part names and plates

Operation panel

Rating plate

Inverter type

Input rating

Output rating

Front cover

Wiring cover

Inverter type

FR - S520 -K -0.1

Symbol Voltage Class

Three-phase 200V class

S520

Single-phase 200V class

S520S

Represents
the inverter
capacity "kW ".

Removal and reinstallation of the front cover
Remove the front cover by pulling it toward
you in the direction of arrow.
To reinstall, match the cover to the inverter
front and i nsta ll it stra ight .
Removal and reinstallation of the wiring cover
The cover can be removed easily by pulling it
toward you.
To reinstall, fi t the cover to the invert er along
the guides.

Symbol Version

None

NA
EC

Serial number

Capacity plate

Inverter type

Symbol Protective Structure

Japanese
specification

North American
specification

European
specification

FR-S520(S)-0.1K to 0.75K FR-S520(S)-1.5K

None

R

C

Serial number

Standard structure
With RS-485 communication

function
Totally enclosed structure

IP40
Only for Japanese version

FR-S520-2.2K, 3.7K

Wiring cove

1

< Type with RS-485 communication function >
When using the RS-485 connector to wire the
cable, you can cut off the lug of the wiring cover
to wire it. (Cutting off the lug provides protective

Lug

structure IP10.)

CAUTION

The connector above the operation panel is for
manufacturer use. Do not touch it as doing so
may cause an electric shock.

1.

CONNECTION OF PERIPHERAL DEVICES

1.1 Basic Configuration

Power supply

Use within the permissible power supply specifications

(NFB)

or

(ELB)

(MC)

C reactor

(FR-BAL)

Earth (Ground)

Earth (Ground)

of the inverter. (Refer to page 40.)

No-fuse breaker or earth leakage circuit breaker

The breaker must be selected carefully since
an in-rush current flows in the inverter at power-on.

Magnetic contactor

Do not use this magnetic contactor to start and stop the
inverter. Doing so will cause the inverter life to be shorter.

Installation of reactors

The reactors must be used when the power factor is to be
improved or the inverter is installed near a large power supply
system (500kVA or more and wiring distance within 10m (32.81feet)).
Make selection carefully.

Inverter

The inverter life is influenced by ambient
temperature. The ambient temperature should
be as low as possible within the permissible
range. (Refer to page 42.)

Wrong wiring might lead to inverter dam age. The

DC reactor
(FR-BEL)

Devices connected to the output

Do not connect a power capacitor, surge suppressor
or radio noise filter to the output side.

Earth (Ground)

To prevent an electric shock, always ground the motor
and inverter.
For reduction o f in duction noise from the power line of the inverter,
it is recommend ed t o wire the ground cable by returnin g i t to t he
ground terminal of the inverter. (For details of noise reduction
techniques , refer to the instruc t ion manual (detailed).)

control signal lines must be kept fully away f r om
the main circuit to protect them from noise.
(Refer to page 5.)

2

Selection of peripheral devices (Selection changes with the
power supply input specifications of the inverter.)

FR-S520-0.1K to 3.7K(-R)(-C)
FR-S520-0.1K to 3.7K-NA(R)

No-Fuse

Motor

Output

(kW

(HP))

0.1

(1/8)

0.2

(1/4)

0.4

(1/2)

0.75
(1)

1.5
(2)

2.2
(3)

3.7
(5)

Inverter

Type

FR-S520-

0.1K
FR-S520-

0.2K
FR-S520-

0.4K
FR-S520-

0.75K
FR-S520-

1.5K
FR-S520-

2.2K
FR-S520-

3.7K

Breaker

(NFB*1) or

Earth

Leakage

Circuit

Breaker

(ELB)

30AF/5AT

30AF/5AT

30AF/5AT

30AF/10AT

30AF/15AT

30AF/20AT

30AF/30AT

Power
Factor

Improving

AC

Reactor

FR-BAL-

0.4K (*3)
FR-BAL-

0.4K (*3)
FR-BAL-

0.4K

FR-BAL-

0.75K

FR-BAL-

1.5K

FR-BAL-

2.2K

FR-BAL-

3.7K

Power
Factor

Improving

DC

Reactor

FR-BEL-

0.4K (*3)
FR-BEL-

0.4K (*3)
FR-BEL-

0.4K

FR-BEL-

0.75K

FR-BEL-

1.5K

FR-BEL-

2.2K

FR-BEL-

3.7K

Magnetic

Contactor

(MC)

S-N10 2 2

S-N10 2 2

S-N10 2 2

S-N10 2 2

S-N10 2 2
S-N11,

S-N12
S-N20 3.5 3.5

FR-S520S-0.1K to 1.5K(-R)
FR-S520S-0.2K to 1.5K-EC(R)

No-Fuse

Motor

Output

(kW

(HP))

0.1

(1/8)

0.2

(1/4)

0.4

(1/2)

0.75
(1)

1.5
(2)

*1 Choose the NFB type to meet the power supply capacity.
*2 The size of the cabl e indicated assumes the wiring length of 20m (65.62feet).
*3 The power factor may be slightly lower.

Inverter

Type

FR-S520S-

0.1K
FR-S520S-

0.2K
FR-S520S-

0.4K
FR-S520S-

0.75K
FR-S520S-

1.5K

Breaker

(NFB*1) or

Earth

Leakage

Circuit

Breaker

(ELB)

30AF/5AT

30AF/10AT

30AF/10AT

30AF/15AT

30AF/20AT

Power
Factor

Improving

AC

Reactor

FR-BAL-

0.4K (*3)
FR-BAL-

0.4K (*3)
FR-BAL-

0.75K (*3)
FR-BAL-

1.5K (*3)
FR-BAL-

2.2K (*3)

Power
Factor

Improving

DC

Reactor

FR-BEL-

0.4K (*3)
FR-BEL-

0.4K (*3)
FR-BEL-

0.75K (*3)
FR-BEL-

1.5K (*3)
FR-BEL-

2.2K (*3)

Magnetic

Contactor

(MC)

S-N10 2 2

S-N10 2 2

S-N20 2 2

S-N20 2 2

S-N21 2 2

Cables (mm2)

R, S, T U, V, W

22

Cables (mm2)

R, S

1

, N>

<L

(*2)

(*2)

U, V, W

3

2.

INSTALLATION METHOD

2.1 Installation of the Inverter

Enclosure surface mounting Mounting inside enclosure

Fix the front
cover and wiring
cover after
removing them.

When containing two or more

Leave enough clearances
and provide cooling measures.

• Install the inverter under the following conditions.

Ambient temperature

Vertical mounting

Vertical

and humidity

Temperature: -10°C to 50°C
(14°F to 122°F)
Humidity: 90%RH maximum

• The inverter consists of precision mechanical and electronic parts. Never install
or handle it in any of the following conditions as doing so could cause an
operation fault or failure.

inverters, install them in parallel
and provide cooling measures.

Enough clearances

10cm

1cm
(0.39inch)
or more

10cm
(3.94inch)
or more

These clearances are also necessary
for changing the cooling fan.
(1.5K or more)

(3.94inch)
or more

1cm
(0.39inch)
or more

Direct sunlight

Vertical mounting
(When mounted
inside enclosure)

Vibration

2

(5.9m/s or more)

Transportation by
holding front cover
or dial

High temperature,
high humidity

Oil mist, flammable
gas, corrosive gas,
fluff, dust, etc.

4

Horizontal placement

Mounting to
combustible
material

3.

SPECIFICATIONS OF WIRING AND TERMINALS

3.1 Terminal connection diagram (Japanese version)

FR-S520-0.1K to 3.7K (-R) (-C)

NFB

3-phase AC
power suppl y

External transistor common

Contact input common (source)

Frequency setting signals (Analog)

When using current input as the
frequency setting signal, set "4"
in any of Pr. 60 to Pr. 63 (input
terminal function selection) and
assign AU (current input selection)
to any of terminals RH, RM, RL
and STR.

24VDC power supply

Take care not to short
terminal s P C -SD.

Forward rotation start

Reverse rotation start

Multi-speed selection

Contact input common

Control input signals
(No voltage input allowed)

Frequency
setting
potentiometer
1/2W1k
(*4)

4 to 20mADC (+)

MC

3

2

1

Current input (-)

High

Middle

Low

Inverter

R
S
T

PC

STF
STR
RH
RM

RL
SD

SINK

(*3)

SOURCE

10 (+5V)

0 to 5VDC

2

0 to 10VDC

5 (Common)

4 (4 to 20mADC)

RS-485 Connector (*1)

Selected

U
V

W

P1

N

A
B
C

RUN

SE

FM

SD

Power factor improving
DC reactor
(FR-BEL: Option)

P

Alarm
output

Running
Open collector

output common

Calibration
resistor (*2)

Earth (Ground)
Grounding resistanc e 100 maximum
Grounding cable size: 2mm

Motor

IM

Ground

: Remove this

Jumper

jumper when FR-BEL
is connected.

Operation status
output

Open
collector
outputs

Indicator
1mA full-scale
Analog meter
(Digital indicator)

1mA

(+) (-)

2

Main circuit terminal, Control circuit input terminal,

Control circuit out put terminal

Remarks

*1 Only the type with RS-485 communication function
*2 Not needed when the setting dial is used for calibration. Used when

calibration must be made near the frequency meter for such a reason as a
remote frequency meter. However, the frequency meter needle may not
deflect to full-scale if the calibration resistor is connected. In this case, use
this resistor and setting dial together.

*3 You can switch between the sink and source logic positions. For details, refer

to the instruction manual (detailed).

*4 When the setting potentiometer is used frequently, use a 2W1kΩ potentiometer.

CAUTION

Keep the signal cables m ore th an 1 0cm (3.9 4inches) away from the power ca bles.

5

FR-S520S-0.1K to 1.5K (-R) (-C)

(

)

NFB

Power supply

MC

R
S

U
V

W

Motor

Remarks

• To ensure safety, connect the power input to the inverter via a magnetic
contactor and earth leakage circuit breaker or no-fuse breaker, and use the
magnetic contactor to switch power on-off.

• The output is three-phase 200V.

IM

Earth

Ground

6

3.1.1 Layout and wiring of main circuit terminals

r

FR-S520-0.1K, 0.2K, 0.4K, 0.75K (-R) (-C) FR-S520-1.5K, 2.2K, 3.7K (-R) (-C)

RST

Jumper

P1

NP

NP

Jumper

RST

Power
supply

U V W

IM

Motor

P1

R S T

Power
supply

FR-S520S-0.1K, 0.2K, 0.4K, 0.75K (-R) FR-S520S-1.5K (-R)

RS

Power
supply

Jumpe

NP

P1

U V W

IM

Motor

NP

Jumper

P1

RS

Power
supply

Screw size: M3.5

Recommended cable size:
Crimping terminal : 2-3.5

Screw tightening torque: 1.2 N⋅m
Overall wiring lengt h:

2mm

2

(14 AWG)

100m (328.08feet) maximum *

CAUTION

If the wiring length of the 0.1K or 0.2K is

Screw size: M4
Recommended cable size:

Crimping terminal :

2

2mm

(14 AWG) (1.5K, 2.2K)

2

3.5mm

2-4 (1.5K, 2.2K), 5.5-4 (3.7K)
Screw tightening torque: 1.5N⋅m
Overall wiring lengt h:

100m (328.08feet)

30m (98.43feet) or more, reduce the
carrier frequency to 1kHz.

U V W

IM

Motor

U V W

IM

Motor

(12 AWG) (3.7K)

maximum *

* When automatic torque boost is selected i n Pr. 98 "automatic torque boost selection

(motor capacit y)": 30m (98.43feet) maximum.

CAUTION

The power supply cables must be connected to R, S, T. If they are connected

•

to U, V, W, the inverter will be damaged. (Phase sequence need not be
matched.)
(For use with a single-phase power supply, the power supply cables must be
connected to R and S.)
Connect the motor to U, V, W.

•

Turning on the forward rotation switch (signal) at this time rotates the motor
counterclockwise when viewed from the load shaft.

7

3.2 Terminal connection diagram (North America version)

FR-S520-0.1K to 3.7K-NA (R)

MC

3-phase AC
power supply

External transistor common

Contact input common (source)

Multi-speed selection

Control input signals
(No voltage input allowed)

Frequency setting signals (Analog)

Frequency
setting
potentiometer
1/2W1k
(*3)

When using current input as the
frequency setting signal, set "4"
in any of Pr. 60 to Pr. 63 (input
terminal function selection) and
assign AU (current input selection)
to any of terminals RH, RM, RL
and STR.

NFB

24VDC power supply

Take care not to short
terminals PC-SD.

Forward rotation start
Reverse rotation start

High

Middle

Low

Contact input common

3

2

1

Current input (-)

4 to 20mADC (+)

Main circuit terminal, Control circuit input terminal, Control circuit output terminal

Inverter

R
S
T

PC

STF
STR
RH
RM

RL
SD

SINK

(*2)

SOURCE

10 (+5V)

0 to 5VDC

2

0 to 10VDC

5 (Common)

4 (4 to 20mADC)

RS-485 Connector (*1)

Selected

U

V

W

P1

N

A
B

C

RUN

SE

AM

Power factor improving
DC reactor
(FR-BEL: Option)

P

Alarm
output

Running
Open collector

output common

5

Earth (Ground)
Grounding resistanc e 100 maximum
Grounding cable size: 2mm

Motor

IM

Earth
(Ground)

Jumper:

jumper when FR-BEL
is connected.

Remove this

Operation status
output

Open
collector
outputs

(+)

Analog signal
output
(0 to 5VDC)

(-)

2

Remarks

*1 Only the type with RS-485 communication function
*2 You can switch between the sink and source logic positions. For details, refer

to the instruction manual (detailed).

*3 When the setting potentiometer is used frequently, use a 2W1kΩ potentiometer.

CAUTION

Keep the signal cables m ore th an 1 0cm (3.9 4inches) away from the power ca bles.

8

3.2.1 Layout and wiring of main circuit terminals

r

FR-S520-0.1K, 0.2K, 0.4K, 0.75K-NA (R) FR-S520-1.5K, 2. 2K, 3.7K-NA (R)

Jumpe

NP

P1

NP

Jumper

RST

Power

supply

Screw size: M3.5

Recommended cable size:
Crimping terminal : 2-3.5

Screw tightening torque: 1.2 N⋅m
Overall wiring lengt h:

CAUTION

If the wiring length of the 0.1K or 0.2K is
30m (98.43feet) or more, reduce the
carrier frequency to 1kHz.

* When automatic torque boost is selected i n Pr. 98 "automatic torque boost selection

(motor capacit y)": 30m (98.43feet) maximum.

U V W

IM

Motor

2

2mm

(14 AWG)

100m (328.08feet) maximum *

P1

R S T

Power
supply

Screw size: M4
Recommended cable size:

Crimping terminal :
Screw tightening torque: 1.5N⋅m

Overall wiring lengt h:

2

2mm

(14 AWG) (1.5K, 2.2K)

2

3.5mm

2-4 (1.5K, 2.2K), 5.5-4 (3.7K)

100m (328.08feet)

U V W

Motor

(12 AWG) (3.7K)

IM

maximum *

CAUTION

The power supply cables must be connected to R, S, T. If they are connected

•

to U, V, W, the inverter will be damaged. (Phase sequence need not be
matched.)
Connect the motor to U, V, W.

•

Turning on the forward rotation switch (signal) at this time rotates the motor
counterclockwise when viewed from the load shaft.

<When single-phase power input is provided for three-phase power input inverter
(NA version only)>

Reduce the output current.

•

FR-S520-"K-NA inverter 0.1 0.2 0.4 0.75 1.5 2.2 3.7
Rated output current (A) 0.4 0.8 1.5 2.5 4.0 5.0 7.0
Power supply capacity (kVA) 0.4 0.8 1.5 2.5 4.5 5.5 9.0
AC input power (kW ) 1.1 6.4 4.5 6.4 11.2 12.9 17.4

Set m9 (Pr. 637) "current detection filter".

•

Setting "801" in the manufacturer setting parameter C8 enables you to set the
m9 parameter.

CAUTION

Parameters other than m9 can also be made to be displayed, but never alter
these since they are manufacturer setting parameters.

m9 Setting Description

0 Single-phase pow er input

- - -

(Factory setting)

Three-phase power input

CAUTION

Always return the C8 parameter to 0 (factory setting) after you have finished the
setting of m9.

9

3.3 Terminal connection diagram (European version)

FR-S520S-0.2K to 1.5K-EC (R)

MC

NFB

Power supply

External transistor common

Contact input common (source)

Frequency setting signals (Analog)

24VDC power supply

Take care not to short
terminals PC-SD.

Forward rotation start
Reverse rotation start

High

Multi-speed selection

Contact input common

Control input signals
(No voltage input allowed)

Frequency
setting
potentiometer
1/2W1k
(*3)

When using current input as the
frequency setting signal, set "4"
in any of Pr. 60 to Pr. 63 (input
terminal function selection) and
assign AU (current input selection)
to any of terminals RH, RM, RL
and STR.

Main circuit terminal, Control circuit input terminal, Control circuit output terminal

3

1

Current input (-)

4 to 20mADC (+)

Middle

Low

2

Inverter

L

1

N

PC

STF
STR
RH
RM

RL
SD

SINK

(*2)

SOURCE

10 (+5V)

0 to 5VDC

2

0 to 10VDC

5 (Common)

4 (4 to 20mADC)

RS-485 Connector (*1)

Selected

U

V

W

P1

A
B

C

RUN

SE

AM

Power factor improving
DC reactor
(FR-BEL: Option)

Alarm
output

Running
Open collector

output common

5

Earth (Ground)
Grounding resistanc e 100 maximum
Grounding cable size: 2mm

Motor

IM

Earth
(Ground)

: Remove this

Jumper

jumper when FR-BEL
is connected.

Operation status
output

Open
collector
outputs

(+)

Analog signal
output

(-)

(0 to 5VDC)

2

Remarks

*1 Only the type with RS-485 communication function
*2 You can switch between the sink and source logic positions. For details, refer

to the instruction manual (detailed).

*3 When the setting potentiometer is used frequently, use a 2W1kΩ potentiometer.

• The output is three-phase 200V.

CAUTION

• Keep the signal cables more tha n 10cm (3.94inches) away from the power cables.

• To ensure safety, connect the power input to the inverter via a magnetic

contactor and earth leakage circuit breaker or no-fuse breaker, and use the
magnetic contactor to switch power on-off.

10

3.3.1 Layout and wiring of main circuit terminals

r

FR-S520S-0.2K, 0.4K, 0. 75K-EC (R)

Jumpe

P1

-

+

L1 N

Power
supply

Screw size: M3.5

Recommended cable size: 2mm
Crimping terminal : 2-3.5
Screw tightening torque: 1.2 N⋅m
Overall wiring length: 100m (328.08feet) maximum *

CAUTION

If the wiring length of the 0.2K is 30m (98.43fe et) or more, reduce the carrier frequency
to 1kHz.

FR-S520S-1.5K-EC (R)

+

-

P1

Screw size: M4
Recommended cable size:2mm
Crimping terminal : 2-4
Screw tightening torque: 1.5N⋅m
Overall wiring lengt h: 100m (328.08feet)

U V W

2

(14 AWG)

Jumper

L1 N

Power
supply

2

(14 AWG)

IM

Motor

maximum *

U V

Motor

W

IM

Remarks

* When automatic torque boost is selected in Pr. 98 "automatic torque boost

selection (motor capacity)": 30m (98.43feet) maximum.

CAUTION

For power input wiring, connect L1 to R/L1 of the terminal block and N to

•

S/L2 of the terminal block.
Connect the motor to U, V, W.

•

Turning on the forward rotation switch (signal) at this time rotates the motor
counterclockwise when viewed from the load shaft.
Do not connect the power supply to U, V and W.

•

11

3.4 Main Circuit

3.4.1 Explanation of main circuit terminals

Symbol Terminal Name Description

R, S, T* AC power input Connect to the commercial power supply.
U, V, W Inverter output Connect a three-phase squirrel-cage motor.

N <->

P <+>, P1

* R, S, <L1, N> terminals for single-phase power input.

DC voltage
common
Power factor
improving DC
reactor connection

Earth (Ground)

CAUTION

< > Terminal names in parentheses are those of the EC version.

DC voltage common terminal. Not isolated from the power
supply and inverter output.
Remove the jumper from across terminals P <+> -P1 and
connect the optional power factor improving DC reactor (FR­BEL).
For grounding the inverter chassis.
Must be earthed.

3.5 Control Circuit

3.5.1 Explanation of control circuit terminals

Symbol Terminal Name Description

Forward rotation

STF

start
Reverse rotation

STR

start

RH

Contact input

Multi-speed

RM

selection

RL

SD

Contact input

(*1)

common (sink)

External transistor
common

PC

24VDC power
supply

(*1)

Frequency setting

10

2

4

Contact input
common (source)
Frequency setting
power supply

Frequency
setting

(Voltage signal)

Frequency
setting

(Current signal)

Input signals

Turn on the STF signal
to start forward rotation
and turn it off t o stop.
Turn on the STF signal
to start reverse rotation
and turn it off t o stop.
You can select mult iple speeds by
shorting any of terminals RH, RM
and RL signal.
The priorities of the speed
commands are in order of jog,
multi-speed sett ing (RH, RM, RL,
REX) and AU.
Common terminal for contact inputs (terminal s STF, STR,
RH, RM, RL) and indicator connection (terminal FM).
Isolated from terminals 5 and SE.
When connecting t he transistor output (open collector
output) of a programma ble controller (PLC) etc., connect
the positive external power supply for transistor output to
this terminal to prevent a malfunction due to l eakage
current. It can be used as a 24V 0.1A DC power supply
across PC-SD termi nals. Acts as the common termi nal of
the contact input signals when source l ogic is selected.
5VDC, permissible l oad current 10mA.

Inputting 0 to 5VDC (0 to 10V) provides the maximum
output frequency at 5V (10V) and makes input and output
proportional.
Use Pr. 73 "0 to 5V, 0 to 10V selection" to switch between
5V and 10V.
Input resistance 10kΩ. Maximum permissible input voltage
20V.

Input 4 to 20mA DC. Factory-adjusted to be 0Hz at 4mA
and 60Hz <50Hz for EC version> at 20mA. Maximum
permissible input current 30mA. Input resistance
approximately. 250Ω.
Turn ON signal AU for current input.
Use any of Pr. 60 to Pr. 63 (input terminal function
selection) t o set the AU signal.

A stop command is given if STF
and STR signal turn ON at the
same time.

12

The terminal function
changes with the
setting of input
terminal function
selection (Pr. 60 to
Pr. 63). (*4)