Fuji Electric Frenic-Sce Instruction Manual

High Performance Inverter

Solar Pumping

Instruction Manual

Thank you for purchasing our multifunction FRENIC-Ace series of inverters.

• This product is desig ne d to dri ve a thr e e-phase motor under var iab le s p eed c ontr ol. Read through
this user's manual and become familiar with the handling procedure for correct use.

• Improper handling might result in incorrect operation, a short life, or even a failure of this product as
well as the motor.

• Deliver this manual t o the end user of this product. Kee p this manual in a safe place until t his
product is discarded.

• For how to use an optional device, refer to the instruction and installation manuals for that optional
device.

Jde085-00031a

Copyright © 2014 Fuji Electric Co., Ltd.
All rights reserved.
No part of this publ ication m ay be reproduc ed or copi ed without pr ior writte n perm ission

from Fuji Electric Co., Ltd.
All products and company nam es m entioned in t his manua l are tr adem ark s or r egistered

trademarks of their respective holders.
The information contained herein is subject to change without prior notice for

improvement.

The purpose of this user's manual is to provide accurate information in handling, setting up
and operating of the FRENIC-Ace series of inverters. Please feel free to send your
comments regarding any errors or omissions you may have found, or any suggestions you
may have for generally improving the manual.

In no event will Fuji Electric Co., Ltd. be liable for any direct or indirect damages resulting
from the application of the information in this manual.

Preface

Thank you for purchasing our m ultifunction FRENIC-Ace series of inverters for Solar Pum ping
application. This product is designed to drive three-phase induction motors or three-phase
permanent magnet synchronou s m otors under variable speed control.

This manual provides the i nformation on the FRENIC-Ace series of inverters including its
operating procedure when used in Solar Pumping application. B efore use, carefully read this
manual for proper use. Improper ha ndling might res ult in incorrect operat ion, a short life, or ev en a
failure of this product as well as t he motor .

The table below lists the other materials related to the use o f the FRENIC-Ace. Read the m in
conjunction with this manual if necessary.

Name Material No. Description

Catalog

24A1-E-0042

Product scope, features, specifications, external drawings,
and options of the product

RS

-485 Communication User' s

Manual

24A7-E-0021*

Overview of functions implemented by using FRENIC-Ace
RS-485 communications facility, its communications
specifications, Modbus RTU/Fuji general-p urpo se inv ert er
protocol, function codes and related data formats

User

’s Manual for China model 24A7-E-0043x This manual is written in English.

User

’s Manual for China model. 24A7-C-0043x This manual is written in simplified Chinese.

User

’s Manual for Japanese

model.

24A7-J-0043x This manual is written in Japanese.

*Available soon
x Is the index letter that indicates the manual version. Please refer to the latest one.

The materials are subject to c hange without notice. Be sure to obtain the latest editions for use.

i

Introduction of FRENIC Ace Solar Pumping

In the Solar Pumping applicat ion the inv ert er drives an electrical motor (pump), while the power is
supplied usually from a PV panel. FRENIC Ace Solar Pumping inverter speci fication is equipped
with dedicated functions for t he cor r ect oper ation under these spec ia l conditions:

 Solar Panel voltage set point calculation at every start (depending on current irradiance

and panel temperatur e)

 True M aximum Power Point Tracking (MPP T) function
 Detection of sudden changes of conditions (irradiance)
 Stop criteria selectable (frequency and/or power)
 Star t c rit er ia by s olar panel voltage and time (to limit the number of starts)
 Dry pump detection funct i on
 Water t ank maximum level detection fu nc t io n
 Low power detection funct ion
 Two sets of PID gains

ii

Index

Chapter 1 SAFETY PRECAUTIONS

This chapter describes the safety precautions that should be considered during t he w hol e li fe o f
the product.

Chapter 2 INSTALLATION AND WIRING

This chapter describes the i mportant points in installing and wiring the inver t er.

Chapter 3 OPERATION USING THE KEYP AD

This chapter describes keypad operation of the inv er t er.
Chapter 4 SET UP PROCEDURE
This chapter describes the set up pr ocedure of FRENIC Ace for Solar Pumping application.

Chapter 5 FUNCTION CODES

This chapter explains the function codes relevant for Sol ar pumping application. For other
parameters not descr ib ed in this manual please refe r t o FRE NIC Ace User M anual.

Chapter 6 TROUBLESHOOTING

This chapter describes troubleshooting procedures t o be fo llowed when the invert er malfunctions
or detects an alarm or a light alarm condition. In this c hapter , first chec k whether any alarm code o r
the "light alarm" indicatio n (

l-al

) is displayed or not, and then pro ceed to the troubleshooting items.

Chapter 7 SPECIFICATIONS

This chapter describes the pow er circuit input and output r at ings and basic constructive
specifications of FRENIC Ace standard model.

iii

1-1

Chapter 1 SAFETY PRECAUTIONS

Read this manual thoroughly before proceeding with installation, connections (wiring), operation, or maintenance
and inspection. Ensure you have sound knowledge of the device and familiarize yourself with all safety information
and precautions before proceeding to operate the inverter.

Safety precautions are classified into the following two categories in this manual.

Failure to heed the information indicated by this symbol may lead to dangerous
conditions, possibly resulting in death or serious bodily injuries.

Failure to heed the information indicated by this symbol may lead to dangerous
conditions, possibly resulting in minor or light bodily injuries and/or substantial
property damage.

Failure to heed the information contained under the CAUTION title can also result in serious consequences. These
safety precautions are of utmost importance and must be observed at all times.

Application

• The FRENIC-Ace is designed to drive a three-phase induction motor. Do not use it for single-phase motors
or for other purposes.

Fire or an accident could occur.

• The FRENIC-Ace may not be used for a life-support system or other purposes directly related to the human
safety.

• Though the FRENIC-Ace is manufactured under strict quality control, install safety devices for applications
where serious accidents or property damages are foreseen in relation to the failure of it.

An accident could occur.

Installation

• Install the inverter on a base made of metal or other non-flammable material.

Otherwise, a fire could occur.

• Do not place flammable object nearby.

Doing so could cause fire.

• Inverters FRN0085E2■-4G or above, whose protective structure is IP00, involve a possibility that a human
body may touch the live conductors of the main circuit terminal block. Inverters to which an optional DC
reactor is connected also involve the same. Install such inverters in an inaccessible place.

Otherwise, electric shock or injuries could occur.

• Do not support the inverter by its front cover during transportation.

Doing so could cause a drop of the inverter and injuries.

• Prevent lint, paper fibers, sawdust, dust, metallic chips, or other foreign materials from getting into the
inverter or from accumulating on the heat sink.

• When changing the positions of the top and bottom mounting bases, use only the specified screws.

Otherwise, a fire or an accident might result.

• Do not install or operate an inverter that is damaged or lacking parts.

Doing so could cause fire, an accident or injuries.

1-2

Wiring

• If no zero-phase current (earth leakage current) detective device such as a ground-fault relay is installed in
the upstream power supply line, in order to avoid the entire power supply system's shutdown undesirable to
factory operation, install a residual-current-operated protective device (RCD)/earth leakage circuit breaker
(ELCB) individually to inverters to break the individual inverter power supply lines only.

Otherwise, a fire could occur.

• When wiring the inverter to the power source, insert a recommended molded case circuit breaker (MCCB) or
residual-current-operated protective device (RCD)/earth leakage circuit breaker (ELCB) (with overcurrent
protection) in the path of each pair of power lines to inverters. Use the recommended devices within the
recommended current capacity.

• Use wires in the specified size.

• Tighten terminals with specified torque.

Otherwise, a fire could occur.

• When there is more than one combination of an inverter and motor, do not use a multicore cable for the
purpose of handling their wirings together.

• Do not connect a surge killer to the inverter's output (secondary) circuit.

Doing so could cause a fire.

• Be sure to connect an optional DC reactor (DCR) when the capacity of the power supply transformer exceeds
500 kVA and is 10 times or more the inverter rated capacity.

Otherwise, a fire could occur.

• Ground the inverter in compliance with the national or local electric code.

• Be sure to ground the inverter's grounding terminals G.

Otherwise, an electric shock or a fire could occur.

• Qualified electricians should carry out wiring.

• Be sure to perform wiring after turning the power OFF.

Otherwise, an electric shock could occur.

• Be sure to perform wiring after installing the inverter unit.

Otherwise, an electric shock or injuries could occur.

• Ensure that the number of input phases and the rated voltage of the product match the number of phases and
the voltage of the AC power supply to which the product is to be connected.

Otherwise, a fire or an accident could occur.

• Do not connect the power supply wires to output terminals (U, V, and W).

• When connecting a DC braking resistor (DBR), never connect it to terminals other than terminals P(+) and
DB.

Doing so could cause fire or an accident.

• In general, sheaths of the control signal wires are not specifically designed to withstand a high voltage (i.e.,
reinforced insulation is not applied). Therefore, if a control signal wire comes into direct contact with a live
conductor of the main circuit, the insulation of the sheath might break down, which would expose the signal
wire to a high voltage of the main circuit. Make sure that the control signal wires will not come into contact with
live conductors of the main circuit.

Doing so could cause an accident or an electric shock.

• Before changing the switches or touching the control circuit terminal symbol plate, turn OFF the power and

wait at least five minutes for inverters FRN0115E2■-2G / FRN0072E2■-4G or below, or at least ten
minutes for inverters FRN0085E2■-4G or above. Make sure that the LED monitor and charging lamp are

turned OFF. Further, make sure, using a multimeter or a similar instrument, that the DC link bus voltage
between the terminals P(+) and N(-) has dropped to the safe level (+25 VDC or below).

Otherwise, an electric shock could occur.

• The inverter, motor and wiring generate electric noise. Be careful about malfunction of the nearby sensors
and devices. To prevent them from malfunctioning, implement noise control measures.

Otherwise an accident could occur.

1-3

Operation

• Be sure to mount the front cover before turning the power ON. Do not remove the cover when the inverter
power is ON.

Otherwise, an electric shock could occur.

• Do not operate switches with wet hands.

Doing so could cause electric shock.

• If the auto-reset function has been selected, the inverter may automatically restart and drive the motor
depending on the cause of tripping. Design the machinery or equipment so that human safety is ensured at
the time of restarting.

Otherwise, an accident could occur.

• If the stall prevention function (current limiter), automatic deceleration (anti-regenerative control), or
overload prevention control has been selected, the inverter may operate with acceleration/deceleration or
frequency different from the commanded ones. Design the machine so that safety is ensured even in such
cases.

• The key on the keypad is effective only when the keypad operation is enabled with function code F02 (=
0, 2 or 3). When the keypad operation is disabled, prepare an emergency stop switch separately for safe
operations.

Switching the run command source from keypad (local) to external equipment (remote) by turning ON the

"Enable communications link" command LE disables the key. To enable the key for an emergency
stop, select the STOP key priority with function code H96 (= 1 or 3).

• If any of the protective functions have been activated, first remove the cause. Then, after checking that the
all run commands are set to OFF, release the alarm. If the alarm is released while any run commands are set
to ON, the inverter may supply the power to the motor, running the motor.

Otherwise, an accident could occur.

• If you enable the "Restart mode after momentary power failure" (Function code F14 = 3 to 5), then the
inverter automatically restarts running the motor when the power is recovered.

Design the machinery or equipment so that human safety is ensured after restarting.

• If the user configures the function codes wrongly without completely understanding this User's Manual, the
motor may rotate with a torque or at a speed not permitted for the machine.

• Starting auto-tuning involves motor rotation. Sufficiently check that motor rotation brings no danger
beforehand.

An accident or injuries could occur.

• Even if the inverter has interrupted power to the motor, if the voltage is applied to the main circuit input
terminals L1/R, L2/S, L3/T, L1/L and L2/N, voltage may be output to inverter output terminals U, V, and W.

• Even if the motor is stopped due to DC braking or preliminary excitation, voltage is output to inverter output
terminals U, V, and W.

An electric shock may occur.

• The inverter can easily accept high-speed operation. When changing the speed setting, carefully check the
specifications of motors or equipment beforehand.

Otherwise, injuries could occur.

• Do not touch the heat sink and braking resistor because they become very hot.

Doing so could cause burns.

• The DC brake function of the inverter does not provide any holding mechanism.

Injuries could occur.

• Ensure safety before modifying the function code settings.

Run commands (e.g., "Run forward" FWD), stop commands (e.g., "Coast to a stop" BX), and frequency

change commands can be assigned to digital input terminals. Depending upon the assignment states of
those terminals, modifying the function code setting may cause a sudden motor start or an abrupt change in
speed.

• When the inverter is controlled with the digital input signals, switching run or frequency command sources
with the related terminal commands (e.g., SS1, SS2, SS4, SS8, Hz2/Hz1, Hz/PID, IVS, and LE) may cause
a sudden motor start or an abrupt change in speed.

• Ensure safety before modifying customizable logic related function code settings (U codes and related
function codes) or turning ON the "Cancel customizable logic" terminal command CLC. Depending upon the
settings, such modification or cancellation of the customizable logic may change the operation sequence to
cause a sudden motor start or an unexpected motor operation.

An accident or injuries could occur.

1-4

Maintenance and inspection, and parts replacement

• Before proceeding to the maintenance/inspection jobs, turn OFF the power and wait at least five minutes
for inverters FRN0115E2■-2G / FRN0072E2■-4G or below, or at least ten minutes for inverters
FRN0085E2■-4G or above. Make sure that the LED monitor and charging lamp are turned OFF. Further,

make sure, using a multimeter or a similar instrument, that the DC link bus voltage between the terminals
P(+) and N(-) has dropped to the safe level (+25 VDC or below).

Otherwise, an electric shock could occur.

• Maintenance, inspection, and parts replacement should be made only by qualified persons.

• Take off the watch, rings and other metallic objects before starting work.

• Use insulated tools.

Otherwise, an electric shock or injuries could occur.

• Never modify the inverter.

Doing so could cause an electric shock or injuries.

Disposal

• Treat the inverter as an industrial waste when disposing of it.

Otherwise injuries could occur.

GENERAL PRECAUTIONS

Drawings in this manual may be illustrated without covers or safety shields for explanation of detail parts. Restore
the covers and shields in the original state and observe the description in the manual before starting operation.

Icons

The following icons are used throughout this manual.

This icon indicates information which, if not heeded, can result in the inverter not operating to full efficiency,
as well as information concerning incorrect operations and settings which can result in accidents.

This icon indicates information that can be useful when performing certain settings or operations.



This icon indicates a reference to more detailed information.

Chapter 2 INSTALLATION AND WIRING

2.1 Installation

(1) Installation Environment

Please install FRENIC-Ace in locations which meet the conditions specified in “Chapter 1 1.3.1 Usage
environment” of the User Manual.

(2) Installation Surface

Please install the inver ter on non-combustible matter such as metals. Also, do not mount it up si de down or
horizontally.

Install on non-combustible matter such as metals.

Risk of fire exists

(3) Surrounding Space

Secure the space shown in Figure 2.1

-1 and Table 2.1-1. When

enclosing

FRENIC-Ace in cabinets, be sure to provide adequate

ventilation

to the cabinet, as the surround ing te mpera ture ma y rise. Do

not contain

it in small enclosures with low heat dissipation capacity.



Installation of Multiple Inverters

When installing 2 or m

ore units in the same equipment or cabinet,

generally mount

them to the side of each other, not above each other.

When the inverters are mounted

above each other, attach partitioning

boards to prevent

that the heat dissipated from the lower inverter to

affect

s the upper inverter.

For

types FRN0072E2-4G, FRN0220E2-2G or below and for

ambient temperature below 4

0°C only, the units can be installed

side by

side without any spacing between them

(30°C or lower for ND and HD).

Table 2.1-1 Surrounding Space mm (inch)

Applicable Capacity A B C

200 V class: FRN0001 to 0220E2-2G
200 V class: FRN0001 to 0012E2-7G
400 V class: FRN0002 to 0072E2-4G

10

(0.39)

100

(3.9)

0

*1

400 V class: FRN0085 to 0590E2-4G

50

(1.97)

100

(3.9)

*1 A clearance of 50 mm is required to use RJ45 connector .

C: Space in front of the inverter unit

 Installation with External Cooling

The

external cooling installation reduces the generated heat inside the

panel

by dissipating approximately 70% of the total heat generated

(total heat loss)

by mounting the cooling fins protruding outside the

equipment or cabinet.
Installation with external co

oling is possible for types FRN0069E2■-2G

and

FRN0072E2■-4G or below by adding attachments (optional) for

external cooling,

and for types FRN0085E2■-4G or above by moving

the

mounting bases.

Figure 2.1-2 Installation with External

Cooling

Please refer to User Manual Chapter 11 Item 11.15 for the external
dimensions

drawing of the external cooling attachment (optional).

Prevent lint, wastepaper, wood shavings, dust, metal scrap, and

other foreign material from entering the inv erter or fro m att ac hing to
the cooling fins.

Risk of fire and risk of accidents exist

To install the FRN0085E2■-4G inverter with external cooling, change the mounting position of the mounting bases
following the procedure in Figure 2.1-3.

As the type and number of screws differ by inverter type, please review the following table.

Figure 2.1-1 Installation Direction

2-1

Table 2.1-2 Type and Number of Screws, and Tightening Torque

Inverter type

Mounting base fixation screw Case attachment screw

Tightening torque

Nm (Ib-in)

FRN0085E2■-4G

to FRN0168E2■-4G

M6×20 (5 screws on top，3

screws on bottom)

M6×20

(2 screws on top only)

5.8 (51.3)

FRN0203E2■-4G

M6×20 (3 screws on top and

bottom each)

M6×12

(3 screws on top only)

5.8 (51.3)

FRN0240E2■-4G

to FRN0290E2■-4G

M5×12 (7 screws on top and

bottom each)

M5×12

(7 screws on top only)

3.5 (31.0)

FRN0361E2■-4G

to FRN0415E2■-4G

M5×16 (7 screws on top and

bottom each )

M5×16

(7 screws on top only)

3.5 (31.0)

FRN0520E2■-4G

to FRN0590E2■-4G

M5×16 (8 screws on top and

bottom each)

M5×16

(8 screws on top only)

3.5 (31.0)

1) Remove all of the mounting base fixation screws and the case attachment screws on the top of the inverter.

2) Fix the mounting bases to the case attachment screw holes using the mounting base fixation screws. A few
screws should remain after changing the position of the mounting bases.

3) Change the position of the mounting bases on the bottom side following the procedure in 1) and 2).

Figure 2.1-3 Method to Change the Mounting Base Positions

Use the specified screws in changing the mounting bases.

Risk of fire and risk of accidents exist

Inverter unit installation screw size.
Select the bolt size, considering the thickness of the mounting feet and installation surface so that the bolt

protrudes from the nut by 2 threads or more.

Inverter type

Inverter fixation screw

Tightening torque Nm (Ib-in)

200V class：FRN0030/0040E2■-2G
400V class：FRN0022/0029E2■-4G

M5 (4 screws) 3.5 (31.0)

200V class：FRN0056/0069E2■-2G
400V class：FRN0037E2■-4G to RN0203E2■-4G

M8 (4 screws) 13.5 (119)

400V class：FRN0240E2■-4G to RN0415E2■-4G

M12 (4 screws)

48 (425)

400V class：FRN0520E2■-4G to RN0590E2■-4G

M12 (6 screws)

48(425)

Mounting base fixation screw

Mounting base

(upper side)

Mounting base

(lower side)

Mounting base fixation screw

Case attachment screw

2-2

2.2 Wiring

This chapter describes the basic connection diagram alternatives for Solar Pumping application.

2.2.1 Input and output control signals.

T

able 2.2-1 describes the input control signals to the inverter.

T

able 2.2-1 Input control signals to the inverter.

INPUT DESCRIPTION SYMBOL

[12]

Water tank level analog signal. The signal from the water level sensor of the tank can
be connected to this input. The inverter will stop when the tank level becomes higher
than the level programmed in parameter U128. In order to use this signal, connect the
sensor to this input and set the desired tank level above which the pump has to stop. If
this signal is not used, set a high level in parameter U128 to avoid that the inverter
stops.

TANK LEVEL

[FWD] Run command in the FWD direction FWD

[REV] Run command in the REV direction REV

[X1]

Water tank high level digital signal. This signal is ON when the level of the tank is high.
The inverter will stop when this signal is ON. In order to use this signal, simply connect
it to the inverter; it is not required to enable it by function code.

TANK HL

T

able 2.2-2 describes the outp ut control signals f rom the inverter. The assignment of the out puts can

be changed if required. To do so, change the settings of parameters E20, E21, E27.

T

able 2.2-2 Output control signals from the inverter.

OUTPUT DESCRIPTION SYMBOL

[Y1]

Tank full output signal. This signal indicates that the water tank is full. In this situation
the inverter will not be allowed to RUN, therefore this signal is useful to
indicate/diagnose the cause of the stop.

TANK FULL

[Y2]

Low power output signal. This signal indicates that the output power is low. In case
that this signal is ON and the solar irradiance is high, it is useful to detect/diagnose that
there is a problem in the PV solar panel (for example dust, or the panel has been
covered).

LOW POWER

[30A/B/C]

This relay output is used to indicate that the inverter has tripped by alarm. The alarm
code is displayed in the inverter keypad.

ALM

2.2.2 Inverter supplied from PV panel only

There are two alternatives of connecting the PV panel to the inverter:

(1) Connected to the DC bus terminals P(+), N(-). I n this case the pre charging ci rcuit of the inve rter is not

used. Therefore, when the PV panel is connected to the inverter, high current may flow through at the
initial stage because the inverter DC link capacitor is discharged. In order to avoid the high charging
current, there are some alternatives:

o do not make the connection when the PV panel is already receiving strong irradiat ion, or
o insert a pre-charging circuit in the connection between (+) (PV panel positive pole) and P(+), or
o use the connection alternative (2) described in following pages.

2-3

R

Ｆ

Direct current

reactor (option)

DB

Ｎ(-)

P(+)P1

U
V
W

U
V
W

M

３～

C

L1/R

L2/S
L3/T

G

Ground

terminal

(Note 6)

TH1
THC

PTC
thermistor

To [11]

To [C1]

)

R1
T1

R0
T0

Auxiliary power

input for fan

(Note 5)

｛

(Note 11)

DC/DC

(PLC)

(FWD
)

(REV
)

(X1)
(X2)
(X3)

(X4)

(X5)

(CM)

(EN1)

SINK

SOURCE

(EN2)

0V

+24VDC

<Y1>

<Y2>

<CMY>

[FM]

[11]

0V

G

E

DX+
DX-

SW6

(Note 12)

SW1

(Note 12)

(Note 8)

(Note 9)

(Note 10)

(Note 10)

Safety signal

SW5

(Note 12)

30C

30B
30A

30

Current output

(4(0) to 20 mA DC)

Voltage output

(0 to +10 V DC)

Pulse output

(25 to 32kp/s)

・Power supply voltage switching

connector “CN UX”

・Fan power supply connector “CN R” /

“CN W”

(Note 10)

CAN+
CAN-

SW6

(Note 12)

RJ45 Connector

(Note 9)

(Note 14)

(PLC)

Charge

lamp

RJ45 connector

SW2

(Note 12)

Option

connector

FMI
FMV
FMP

Motor

Data transmission and

reception (RS-485)

Keypad

Detachable terminal block

Voltage input V2
(0 to +10 V DC)

〔11〕

〔12〕

〔13〕

(Note 9)

+10VDC

Current input C1

(4(0) to 20 mA DC)

PTC thermistor input

0V

〔C1〕

Voltage input 12

(0 to +10VDC)
(0 to ±10VDC)

SW4

PTC

AI

(Note 12)

(Note 12)

SW3

C1

V2

0V

Grounding
terminal

(Note15)

(Note 15)

(Note 15)

U1

U2

CN UX

FAN

NC

CN R

CN W

Circuit breaker

(MCCB)

R1

R2

Rx

(+)

(-)

Run forward command (FWD)

Run reverse command (REV)

Tank High Level

detection (TANK HL)

Alarm output
(ALM)

Tank level

detection (TANK

LEVEL)

TANK FULL

LOW POWER

(Note 4)

Figure 2.2-1 Wiring diagram when inverter is supplied from PV panel connected to DC bus terminals.

When using this wiring please ensure that the motor is not regenerating. In case of regeneration the DC link
voltage of the inverter will rise damaging the PV panels. In order to avoid regeneration when operation command
is removed please set function code H11=1 (Coast to a stop). If regeneration cannot be avoided (for example,
controlled deceleration is always required), please use connection alternative (2) below.

(2) Connected to the AC supp ly input s and N(-). In this case the precharging circuit of the inverter is used,

limiting the initial charging current of the inverter DC link capacitor. In this case be aware that the
maximum frequency of charging cycles is two times per hour. When using this connection the current
rating of the input rectifier must be considered. Please consult Fuji Electric to make the inverter
selection.

2-4

R

Ｆ

Direct current

reactor (option)

DB

Ｎ(-)

P(+)P1

U
V
W

U
V
W

M

３～

C

L1/R

L2/S
L3/T

G

Ground

terminal

(Note 6)

TH1
THC

PTC
thermistor

To [11]

To [C1]

)

R1
T1

R0
T0

Auxiliary power

input for fan

(Note 5)

｛

(Note 11)

DC/DC

(PLC)

(FWD)
(REV)

(X1)
(X2)
(X3)

(X4)

(X5)

(CM)

(EN1)

SINK

SOURCE

(EN2)

0V

+24VDC

Run forward command (FWD)

Run reverse command (REV)

Tank High Level

detection (TANK HL)

<Y1>

<Y2>

<CMY>

[FM]

[11]

0V

G

E

DX+
DX-

SW6

(Note 12)

SW1

(Note 12)

(Note 8)

(Note 9)

(Note 10)

(Note 10)

Safety signal

SW5

(Note 12)

30C

30B
30A

Alarm output
(ALM)

30

Current output

(4(0) to 20 mA DC)

Voltage output

(0 to +10 V DC)

Pulse output

(25 to 32kp/s)

・Power supply voltage switching

connector “CN UX”

・Fan power supply connector “CN R” /

“CN W”

(Note 10)

CAN+
CAN-

SW6

(Note 12)

RJ45 Connector

(Note 9)

(Note 14)

(PLC)

Charge

lamp

RJ45 connector

SW2

(Note 12)

Option

connector

FMI
FMV
FMP

Motor

Data transmission and

reception (RS-485)

Keypad

Detachable terminal block

Voltage input V2
(0 to +10 V DC)

〔11〕

〔12〕

〔13〕

(Note 9)

+10VDC

Current input C1

(4(0) to 20 mA DC)

PTC thermistor input

0V

〔C1〕

Voltage input 12

(0 to +10VDC)
(0 to ±10VDC)

SW4

PTC

AI

(Note12)

(Note 12)

SW3

C1

V2

0V

Grounding
terminal

Tank level

detection (TANK

LEVEL)

(Note 15)

(Note 15)

(Note 15)

U1

U2

CN UX

FAN

NC

CN R

CN W

Circuit breaker

(MCCB)

R1

R2

Rx

TANK FULL

LOW POWER

(+)

(-)

(Note 4)

Figure 2.2-2 Wiring diagram when inverter is supplied from PV panel connected to AC input and N(-) terminals.

2-5

2.2.3 Inverter supplied from PV panel and AC supply

When the inverter can be supplied from PV panel and AC supply at the same time, as shown in figure 2.2-4,
please insert magnetic contactors in both PV panel supply and AC supply and make the necessary interlock to
avoid that both supplies are connected at the same time. Additionally to the magnetic contactors, insert blocking
diodes with the suitable rating between the PV panel and the inverter.

R

Ｆ

Direct current

reactor (option)

DB

Ｎ(-)

P(+)P1

U
V
W

U
V
W

M

３～

C

L1/R
L2/S
L3/T

Magnetic

contactor (MC)

Circuit breaker

(MCCB) or earth

leakage breaker

(ELCB)

G

Ground

terminal

(Note 2, 3)

(Note 6)

TH1
THC

PTC
thermistor

To [11]

To [C1]

)

R1
T1

R0
T0

Auxiliary power

input for fan

(Note 5)

｛

(Note 11)

DC/DC

(PLC)

(FWD)
(REV)

(X1)
(X2)
(X3)

(X4)

(X5)

(CM)

(EN1)

SINK

SOURCE

(EN2)

0V

+24VDC

<Y1>

<Y2>

<CMY>

[FM]

[11]

0V

G

E

DX+
DX-

SW6

(Note 12)

SW1

(Note 12)

(Note 8)

(Note 9)

(Note 10)

(Note 10)

Safety signal

SW5

(Note 12)

30C

30B
30A

30

Current output

(4(0) to 20 mA DC)

Voltage output

(0 to +10 V DC)

Pulse output

(25 to 32kp/s)

・Power supply voltage switching

connector “CN UX”

・Fan power supply connector “CN R” /

“CN W”

(Note 10)

CAN+
CAN-

SW6

(Note 12)

RJ45 Connector

(Note 9)

(Note 14)

(PLC)

Charge

lamp

RJ45 connector

SW2

(Note 12)

Option

connector

FMI
FMV
FMP

Motor

Data transmission and

reception (RS-485)

Keypad

Detachable terminal block

Voltage input V2

(0 to +10 V DC)

〔11〕

〔12〕

〔13〕

(Note 9)

+10VDC

Current input C1

(4(0) to 20 mA DC)

PTC thermistor input

0V

〔C1〕

Voltage input 12

(0 to +10VDC)
(0 to ±10VDC)

SW4

PTC

AI

(Note12)

(Note 12)

SW3

C1

V2

0V

Grounding
terminal

(Note 15)

(Note 15)

(Note 15)

U1

U2

CN UX

FAN

NC

CN R

CN W

200V system

200V to 240V

50/60 Hz

400V system

380V to 480V

50/60 Hz

Circuit breaker

(MCCB)

R1

R2

Rx

(+)

(-)

Magnetic

contactor (MC)

(Note 2, 3)

Run forward command (FWD)

Run reverse command (REV)

Tank High Level

detection (TANK HL)

Alarm output
(ALM)

Tank level

detection (TANK

LEVEL)

TANK FULL

LOW POWER

(Note 4)

Figure 2.2-3 Wiring diagram when inverter is supplied from PV panel and AC supply.

2-6

• The PV panel is a DC voltage/current source. Therefore in all cases please ensure that the polarity is
respected when performing the connection between the inverter and the PV panel, otherwise either
equipment may be damaged

Risk of fire and risk of damage exist.

Notes for all drawings:

(Note 1) Install recommended circuit breakers (MCCB) or residual-current-operated protective device (RCD)/

earth leakage breakers (ELCB) (with overcurrent protective function) on the inputs of each inverter
(primary side) for wiring protection. Do not use breakers which exceed the recommended rated current

.

(Note 2) Install recommended magnetic contactors (MC) as necessary on each inverter as these will be used to

disconnect the inverter from the power supply separately from the MCCB or the RCD / ELCB.
Additionally, when installing coils such as MC or solenoid close to the inverter, connect surge absorbers
in parallel.

(Note 3) Make the necessary interlock to avoid that both PV panel supply and AC supply are connected at the

same time. Not preventing this may cause damage to the equipment.

(Note 4) Used for the protection of the PV panel and the wiring. Alternatively fuses can be also used. Please

use recommended types by the PV panel maker. The use of additional protection devices (like surge
protection devices) may be also recommended by the PV panel maker.

(Note 5) Use this terminal when supplying the inverter with DC voltage from the PV panel. Applicable for types

FRN0203E2■-4G or above. Please consult Fuji Electric.

(Note 6) Remove the shorting bar between the inverter main circuit terminals P1-P(+) before connecting the

direct current reactor (DCR) (option).
It must be connected in the following cases:
ND mode: T y pes FRN0139 E2■-4G or above, HD/ HND mode: T y pes FRN01 68E2■-4G or above, HHD
mode: Types FRN0203E2■-4G or above.
Use the direct current reactor (option) when the power supply transformer capacity is above 500 kVA
and the transformer capacity is over 10 times the rated capacity of the inverter, or when “thyristor load
exists” in the same power system. In case of PV panel supply only, DCR is not required for any
capacity.

(Note 8) This terminal is used for grounding the motor. Grounding the motor using this terminal is recommended

in order to suppress inverter noise.

(Note 9) Use twisted lines or shielded lines for the control signals.

Generally, the shielded line requires grounding, but when the effect of externally induced noise is large,
connecting to [CM] may suppress the eff ect of noise. Separate the line from the main circuit wiring and
do not enclose in the same duct. Separation distance of over 10 cm is recommended. When crossing
the main circuit wiring, make the intersection perpendicular.

(Note 10) The various functions listed for terminals [X1] to [X5] (digital inputs), terminals [Y1] to [Y2] (transistor

outputs), and terminal [FM] (monitor output) show the recommended functions for Solar Pumping
application.

(Note 11) These are conne ctors for switching the main circuit. For details, refer to “2.2.7 Switching connectors”.

(Note 12) The various switches on the control printed circuit board define the settings for the inverter operation.

For details, refer to “2.2.6 Operating slide switches”.

(Note 14) Shorting bars are connected between the safety function terminals [EN1], [EN2], and [PLC] as factory

default. Remove the shorting bars when using this function.

(Note 15)

and are separated and insulated.

(Note 16) Charge lamp does not exist in the inverters FRN0069E2■-2G/FRN0044E2■-4G/FRN0012E2■-7G or

below.

0V

0V

2-7

2.2.4 Removal and attachment of the front cover/terminal cover and wiring guide

Always remove the RS-485 communication cable from the RJ-45 connector before removing the front cover.

Risk of fire and risk of accidents exist.

(1) Types FRN0020E2■-2/ FRN0012E2■-4/ FRN0011E2■-7 or below

1) Loosen the screws of the terminal cover. To remove the terminal cover, put your finger in the dimple of the
terminal cover and then pull it up toward you.

2) Pull out the wiring guide toward you.

3) After routing the wires, attach the wiring guide and the terminal cover reversing the steps above.

Figure 2.2-1 Removal of the Terminal Cover and the Wiring Guide (for FRN0006E2S-2)

(2) Types FRN0030E2■-2 to FRN0069E2■-2 and FRN0022E2■-4 to FRN0044 E2■-4

1) Loosen the screws of the terminal cover. To remove the terminal cover, put your finger in the dimple of the
terminal cover and then pull it up toward you.

2) Pull out the wiring guide toward you.

3) After routing the wires, attach the wiring guide and the terminal cover reversing the steps above.

Figure 2.2-2 Removal of the Terminal Cover and the Wiring Guide (for FRN0069E2■-2)

2-8

(3) Types FRN0088E2■-2/ FRN0115E2■-2/ FRN0072E2■-4/ FRN0085E2■-4

1) Loosen the screws of the front cover. Hold both sides of the front cover with the hands, slide the cover
downward, and pull. Then remove it to the upward dir ect ion.

2) Push the wiring guide upward and pull. Let the wiring guide slide and remov e it.

3) After routing the wires, attach the wiring guide and the front cover reversing the steps above.

Figure 2.2-3 Removal of the Front Cover and the Wiring Guide (for FRN0072E2■-4)

(4) Types FRN0085E2■-4 or above

1) Loosen the screws of the front cover. Hold both sides of the front cover with the hands and slide it upward to
remove.

2) After routing the wires, align the front cover top edge to the screw holes and attach the cover reversing the
steps in Figure 2.2-4.

Open the keypad case to view the control printed circuit board.

Tightening torque: 1.8 N·m(15.9 Ib-in) (M4)

3.5 N·m(31.0 Ib-in) (M5)

Figure 2.2-4 Removal of the front cover (for FRN0203E2■-4)

Screw

Screw

Front cover

Keypad case

Front

cover attachment screw

Front cover

Wiring guide

Push upward and pull.
Let the guide slide.

2-9

2.2.5 Main circuit terminals

Terminal layout diagram (main circuit terminals)

Figure 2.2-7 Main circuit terminals layout

The following terminals will have high voltage when power is ON.
Main circuit: L1/R, L2/S, L3/T, P1, P(+), N(-), DB, U, V, W, R0, T0, R1, T1
Insulation level

Main circuit - Casing : Basic insulation (overvoltage category III, degree of contamination 2)
Main circuit - Control circuit : Enhanced insulation (overvoltage category III, degree of contamination 2)

Risk of electric shock exists

For recommended wire sizes please refer to the User Manual.

2-10

[ 1 ] Description of terminal functions (main circuit terminal)

Classification

Terminal

symbol

Terminal name Specification

Main circuit

L1/R, L2/S,
L3/T

Main power
input

Terminals to connect three-phase power source.

L1/L, L2/N

Main power
input

Terminals to connect single-phase power source.

U, V, W Inverter output Terminals to connect three-phase motors.

P (+), P1

For direct
current reactor
connection

Terminals to connect DC reactor (DCR) for power factor enhancement.
It must be connected in the following cases:
ND mode: Types FRN0139E2■-4G or above.
HD/HND mode: Types FRN0168E2■-4G or above.
HHD mode: Types FRN0203E2■-4G or above.

It is not required to connect a DC reactor when supplying the inverter only from PV

panel.

P (+), N (-)

For direct
current bus
connection

Terminals to connect to DC supply voltage from PV panel.

P (+), DB

For braking
resistor
connection

Terminals to connect a braking resistor (optional). Wiring length: Below 5 meters.
(Types FRN0220E2■-2G/FRN0072E2■-4G or below)

G

For inverter
chassis (case)
grounding

Grounding terminal for inverter chassis (case).

R0, T0

Auxiliary power
input for control
circuit

When it is desired to retain the alarm signal for the activation of the protective
function at even inverter main power supply sh

ut off or when continuous display of

the keypad is desired, connect this terminal to the power supply.
(Types FRN0185E2■-2G/FRN0059E2■-4G

or above)

R1, T1

Auxiliary power
input for fan

Ordinarily, these terminals do not need to be connected. Connect these terminals
to AC power supply when operating with direct current power input (such as in
combination with PWM converters).
(Types FRN0203E2■-4G or above)

Follow the sequence below when wiring.

(1) Inverter ground terminal (zG)
(2) Inverter output terminals (U, V, W), motor ground terminal (zG)

(3) Direct current reactor connection terminals (P1, P(+))*
(4) Braking resistor connection terminals (P(+), DB)*
(5) Direct current bus connection terminals (P(+), N(-))*

(6) Main power supply input terminals (L1/R, L2/S, L3/T) or (L1/L, L2/N)

*

Connect if necessary

2-11

2.2.5 Control circuit terminals (common to all models)

[ 2 ] Terminal layout diagram (control circuit terminals)

FRNE2-A, E, K, U

FRNE2-C

Figure 2.2-8 Control circuit terminals layout

The following terminals will have high voltage when the power is ON.
Control terminals: AUX-contact (30A, 30B, 30C, Y5A, Y5C)
Insulation level
Contact output – control circuit : Enhanced insulation (overvoltage category II, degree of contamination 2)

Risk of electric shock exists

[ 3 ] Description of terminal functio ns ( control circuit terminal)

Table 2.2.6-3 Functional Description of Control Circuit Terminals (continued)

Classification

Terminal

symbol

Terminal name

Functional description

Digital input

[EN1]
[EN2]

Enable input

(1) When terminals [EN1]-[PLC] or terminals [EN2]-[PLC] are OFF, the inverter output

transistors stop functioning. (Safe Torque Off: STO)
Be sure to operate terminals [EN1] and [EN2] simultaneously; otherwise an ecf ala rm is

issued and the operation of the inverter will be disabled.
To enable the Enable function, remove the short bar.

(2) T he input mode for terminals [EN1] and [EN2] is fixed to source. The mode cannot be

switched to sink.

(3) Short-circuit terminals [EN1]-[PLC] and [EN2]-[PLC] with short bars when the Enable

input function is not used. (Keep the short bar connected).

<EN terminal circuit specification>

PLC

Photo coupler

CM

<Control circuit block>

6.6 kΩ

DC+24 V

EN1

6.6 kΩ

EN2

Shorting

bar

[PLC] Programma-

ble controller
signal power
source

(1) T he termi nal is used for c onnecting the output signal power source of the programm able

controller (rated voltage DC +24 V (power supply voltage fluctuation range: DC +22 to
+27 V) maximum 100 mA).

(2) The terminal can also be used for the power source for the load connected to the

transistor output. For details, refer to the page on transistor output.

Contact output

Enhanced insulation
(Max. 250 VAC overvoltage category II,

degree of contamination 2)

Contact output

Enhanced insulation
(Max. 250 VAC overvoltage category II,

degree of contamination 2)

Item Min. Max.

Operating
voltage
(SOURCE)

ON level 22 V 27 V
OFF level 0 V 2 V

Operating current at ON
(at input voltage 24 V)

- 4.5 mA

Allowable leak current at OFF - 0.5 mA

2-12

Table 2.2.6-3 Functional Description of Control Circuit Terminals (continued)

Classification

Terminal

symbol

Terminal name Functional description

Transistor output

[Y1] Transistor

output 1

(1) Various signals (running signal, frequency reached signal, overload forecast signal,

etc) set up by function code E20, E21 can be output. For details, refer to “Chapter 5
Function Codes”.

(2) The operating mode between transistor output terminals [Y1], [Y2] and terminal CMY

can be switched to “ON (active ON) at signal output” or “OFF (active OFF) at signal
output”.

<Transistor output circuit specification>

Photo coupler

<Control circuit block>

Y1 to

Y2

CMY

31 to 35V

Voltage

Current

Figure 2.2-14 Transistor Output Circuit

• Connect surge absorbing diode on both ends of the excitation coil when
c

onnecting control relays.

• When a power source is needed for the circuit to be connected, terminal PLC
can be used as a power source terminal (DC24 V (power supply volt

age

f

luctuation range: DC22 to 27 V), maximum 50 mA). In this case, terminal

[CMY] must be shorted to terminal [CM].

SW8 switches the [Y2] terminal output between a general-purpose output assigned by
function code E21 and a functional safety circuit failure output SRCF. The factory default
of SW8 is a general-purpose output.

When SRCF is assigned to terminal [Y2]:
if terminal [Y2] is ON, it means "No ecf alarm."
if terminal [Y2] is OFF, it means "ecf alarm has occurred."

Note that when SRCF is assigned, the operating mode between terminals [Y2] and [CMY]
is fixed at "active ON" (ON at signal output).

For details about an ecf alarm, refer to Section 6.3.2 "Causes, checks and measures of
alarms."

[Y2] Transistor

output 2

[CMY] Transistor

output common

This terminal is the common terminal for transistor output signals.
This terminal is insulated against terminals [CM] and [11].



When connecting the programmable controller to terminals [Y1], [Y2].

The circuit configuration example for connecting the inverter transistor output to the programmable controller
is shown in Figure 2.2

-15. Circuit (a) in Figure 2.2-15 shows the programmable controller input circuit as sink

input and circuit (b) shows as the source input case.

C0

DC+24 V

Programmable

controller

Sink type input

Photo coupler

<Control circuit block>

Y1,
Y2

CMY

31 to
35 V

Current

C0

Programmable

controller

Source type

input

DC+24 V

Photo coupler

<Control circuit block>

Y1 to
Y2

CMY

31 to
35 V

Current

(a) Connec tion diagram for sink input type

programmable controller

(b) Connection diagram for source input

type programmable controller

Figure 2.2-15 Example of Connection Circuit Configuration with Programmable Controller

Item Maximum

Operating
voltage

ON level

3 V

OFF level

27 V

Max load current at ON

50 mA

Leak current at OFF

0.1 mA

2-13

2.2.6 Operating slide switches

Operation of the various switches should be conducted after more than 5 minutes has elapsed since power
is shut off for types smaller than FRN0069E2

-2

and FRN0072E2-4 and after more than 10 minutes

has elapsed for types larger than FRN0085E2

-4

. Confirm that the LED monitor and the charge lamp are
turned off, and that the direct current intermediate circuit voltage between the main circuit terminals P(+) - N(-)
is below the safe voltage (below DC+25 V) with the tester before operating the switches.

Risk of electric shock exists.

The I/O terminal specification can be changed, such as switching the analog output form, by operating the various
slide switches on the printed circuit board (Figure 2.2-22 Slide Switches Positions on the Control Printed Circuit
Board).

To operate the various slide switches, remove the front cover and make the control printed circuit board visible.
(For types larger than FRN0085E2-4, also open the keypad case).



Refer to Section 2.2.2 "Removal and attachment of the front cover and wiring guide" to remove the front

cover and to open/close the keypad case.

The slide switches positions on the control printed circuit board are shown below.

FRNE2-A, E, K, U FRNE2-C

Figure 2.2-9 Slide Switches Locations on the Control Printed Circuit Board

SW1 SW2 SW3 SW4 SW5 SW6

SW7

only on
FRN



E2

-

C

SW8

Factory default

FRN

E2

-E

―

Factory default

FRN

E2

-A, C, K, U

―

Use pointed devices (such as tweezers) to operate the switches. Avoid touching other electronic parts
when moving the switches. The switch will be at open state when the slider is in the middle, so make
sure to push the slider to the ends.

2-14