Fuji Electric frenic mini series User manual

FRENICMiniユーザーズマニュアルC■M■Y■K■
USER'S MANUAL Fuji Electric Co., Ltd.
MEH446
10 FIS
ed paper

Compact Inverter
User's Manual

Copyright © 2002 Fuji Electric Co., Ltd.
All rights reserved.
No part of this publication may be reproduced or copied without prior written permission from Fuji Electric
Co., Ltd.
All products and company names mentioned in this manual are trademarks or registered trademarks of their
respective holders.
The information contained herein is subject to change without prior notice for improvement.

i
Preface
This manual provides all the information on the FRENIC-Mini series of inverters including its operating
procedure, operation modes, and selection of peripheral equipment. Carefully read this manual for proper
use. Incorrect handling of the inverter may prevent the inverter and/or related equipment from operating
correctly, shorten their lives, or cause problems.
The table below lists the other materials related to the use of the FRENIC-Mini. Read them in conjunction
with this manual as necessary.
Name Manual No. Description
Catalog MEH441/MEH451 General description, specifications, and external drawings
of the product
Instruction
Manual INR-SI47-0754-E
A
cceptance inspection, mounting & wiring of the inverter,
operation using the keypad, running the motor for a test,
troubleshooting, and maintenance and inspection
Application
Guide MEH449
A
pplications to conveyance machinery, air conditioner
fans, centrifugal separators and washing machines for
commercial use
Documents related to FUJI's inverters
Catalogs
FRENIC5000G11S/P11S MEH403/MEH413
FVR-E11S MEH404/MEH414
FRENIC5000VG7S MEH405
User's Manuals and Technical Information
FRENIC5000G11S/P11S & FVR-E11S TECHNICAL INFORMATION MEH406
FRENIC5000VG7S SERIES USER'S MANUAL MEH407

ii
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.
This product is not designed for use in appliances and machinery on which lives depend. Consult Fuji
before considering the FRENIC-Mini series of inverters for equipment and machinery related to nuclear
power control, aerospace uses, medical uses or transportation. When the product is to be used with any
machinery or equipment on which lives depend or with machinery or equipment which could cause
serious loss or damage should this product malfunction or fail, ensure that appropriate safety devices
and/or equipment are installed.

iii


Precautions for Use
Driving a 400V
general-purpose
motor
When drivin
g
a 400V
g
eneral-purpose motor with an inverter usin
g
extremel
y
lon
g
cables, dama
g
e to the insulation of the moto
r
ma
y
occu
r
.
Use an output circuit filter (OFL) if necessar
y
after checkin
g
with the
motor manufacturer. Fu
j
i's moto
r
s do not require the use of output circui
t
filters because of their reinforced insulation.
Torque
characteristics and
temperature rise
When the inverter is used to run a
g
eneral-purpose motor, the temperature
of the motor becomes hi
g
he
r
than when it is operated usin
g
a commercial
power supply. In the low-speed range, the cooling effect will be weakened,
so decrease the output torque of the motor. If constant torque is required in
the low-speed range, use a Fuji inverter motor or a motor equipped with an
externally powered ventilating fan.
Vibration
Use of an inverter does not increase vibration of a standard motor, bu
t
when the motor is mounted to a machine, resonance ma
y
be caused b
y
the
natural frequencies, including that of the machine system.
* The use of a rubber couplin
g
or vibration dampenin
g
rubber is
recommended.
* It is also recommended to use the inverter
j
ump frequenc
y
control to
avoid resonance points.
N
ote that operation of a 2-pole motor at 60 Hz or more ma
y
cause
abnormal vibration.
In running
general-
purpose
motors
Noise
When an inverter is used with a
g
eneral-purpose motor, the motor noise
level is higher than that with a commercial power supply. To reduce noise,
raise carrier frequenc
y
of the inverter. Hi
g
h-speed operation at 60 Hz o
r
more can also result in more noise.
High-speed motors
If the set frequenc
y
is set to 120 Hz or more to drive a hi
g
h-speed motor,
test-run the combination of the inverter and motor beforehand to check for
safe operation.
Explosion-proof
motors
When drivin
g
an explosion-proof motor with an inverter, use a
combination of a motor and an inverter that has been approved in advance.
Submersible
motors and pumps
These motors have a lar
g
er rated current than
g
eneral-purpose motors.
Select an inverter whose rated output current is
g
reater than that of the
motor.
These motors differ from
g
eneral-purpose motors in thermal
characteristics. Set a low value in the thermal time constant of the moto
r
when setting the electronic thermal facility.
Brake motors
For motors equipped with parallel-connected brakes, thei
r
bra
k
in
g
powe
r
must be supplied from the primar
y
circuit (commercial powe
r
suppl
y
). If
the brake power is connected to the inverter power output circuit b
y
mistake, problems may occur.
Do not use inverters for drivin
g
motors equipped with series-connec
t
ed
brakes.
Geared motors
If the power transmission mechanism uses an oil-lubricated
g
earbox o
r
speed chan
g
er/reducer, then continuous moto
r
operation at low speed ma
y
cause poor lubrication. Avoid such operation.
Synchronous
motors
It is necessary to use software suitable for this motor type. Contact Fuji for
details.
In running
special
motors
Single-phase
motors
Sin
g
le-phase motors are not suitable for inverter-driven variable spee
d
operation. Use three-phase motors.
* Even if a sin
g
le-phase power suppl
y
is available, use a three-phase
motor as the inverter provides three-phase output.

iv
Environ-
mental
conditions
Installation
location
Use the inverter in a location with an ambient temperature ran
g
e of -10 to
50°C.
The inverter and brakin
g
resistor surfaces become hot under certain
operating conditions. Install the inverter on nonflammable material such as
metal.
Ensure that the installation location meets the environmental conditions
specified in Chapter 8, Section 8.5 "Operatin
g
Environmen
t
and Stora
g
e
Environment."
Installing a
molded case
circuit breaker
(MCCB) or earth
leakage circuit
breaker (ELCB)
Install a recommended molded case circuit breake
r
(MCCB) or an earth
leaka
g
e circui
t
b
reake
r
(ELCB) (with the exception of those exclusivel
y
desi
g
ned for protection from
g
round faults) in the primar
y
circuit of the
inverter to protect the wirin
g
. Ensure that the circui
t
b
reaker capacit
y
is
equivalent to or lower than the recommended capacity.
Installing a
magnetic
contactor (MC) in
the secondary
circuit
If a magnetic contactor (MC) is mounted in the inverter's secondary circuit
for switchin
g
the motor to commercial power or fo
r
an
y
other purpose,
ensure that
b
oth the inverter and the motor are full
y
stopped before
y
ou
turn the MC on or off.
Installing a
magnetic
contactor (MC) in
the primary circuit
Do not turn the ma
g
netic contacto
r
(MC) in the primar
y
circuit on or off
more than once an hour as an inverter fault may result.
If frequent starts or stops are required durin
g
motor operation, use
FWD/REV signals or the run/stop key.
Protecting the
motor
The electronic thermal facilit
y
of the inverter can
p
rotect the moto
r
. The
operation level and the motor type (general-purpose motor, inverter motor)
should be se
t
. For hi
g
h-speed motors o
r
water-cooled motors, set a small
value for the thermal time constant and protect the motor.
If
y
ou connect the motor thermal rela
y
to the motor with a lon
g
cable, a
hi
g
h-frequenc
y
current ma
y
flow into the wirin
g
stra
y
capacitance. This
ma
y
cause the rela
y
to trip at a current lower than the set value for the
thermal relay. If this happens, lower the carrier frequency or use the output
circuit filter (OFL).
Discontinuance of
power-factor
correcting
capacitor
Do not mount power factor correctin
g
capacitors in the inverter primar
y
circuit. (Use the DC reactor to improve the inverte
r
p
owe
r
factor.) Do no
t
use power factor correctin
g
capacitors in the inverter output circuit. An
overcurrent trip will occur, disabling motor operation.
Reducing noise
Use of a filter and shielded wires are t
y
pical measures a
g
ainst noise to
ensure tha
t
EMC directives are met. Refer to Appendices, App.
A
"Advantageous Use of Inverters (Notes on electrical noise)" for details.
Measures against
surge currents
If an overvolta
g
e trip occurs while the inverter is stopped or operated
under a li
g
ht load, it is assumed that the sur
g
e current is
g
enerated b
y
open/close of the phase-advancing capacitor in the power system.
* Connect a DC reactor to the inverter.
Combina-
tion with
peripheral
devices
Megger test
When checkin
g
the insulation resistance of the inverter, use a 500
V
me
gg
er and follow the instructions contained in the FRENIC-Mini
Instruction Manual, Chapter 7, Section 7.4 "Insulation Test."

v
Control circuit
wiring length
When usin
g
remote control, limit the wirin
g
len
g
th between the inverte
r
and operator box to 20 m or less and use twisted shielded cable.
Wiring length
between inverter
and motor
If lon
g
wirin
g
is used between the inverter and the motor, the inverter will
overheat or trip as a result of overcurrent (hi
g
h-frequenc
y
current flowin
g
into the stra
y
capacitance) in the wires connected to the phases. Ensure
that the wiring is shorter than 50 m. If this length must be exceeded, lower
the carrier frequency or mount an output circuit filter (OFL).
Wiring size
Select cables with a sufficient capacit
y
b
y
referrin
g
to the current value o
r
recommended wire size. For details about the ambient temperature an
d
wire t
y
pes, refer to Chapter 6, Section 6.2 "Selectin
g
Wires and Crimp
Terminals" and Appendices, App. G "Allowable Current of Insulate
d
Wires."
Wiring type Do not use multicore cables.
Wiring
Grounding Securely ground the inverter using the grounding terminal.
Driving general-
purpose motor
Select an inverter accordin
g
to the applicable motor ratin
g
s listed in the
standard specifications table for the inverter.
When high starting torque is required or quick acceleration or deceleration
is required, select an inverter with a capacit
y
one size
g
reater than the
standard. Refer to Chapter 7, Section 7.1 "Selecting Motors and Inverters"
for details.
Selecting
inverter
capacity
Driving special
motors
Select an inverter that meets the following condition:
Inverter rated current > Motor rated current
Transpor-
tation and
storage
When transportin
g
or storin
g
inverters, follow the procedures and selec
t
locations that meet the
environmental conditions listed in the FRENIC-Mini Instruction Manual, Chapter 1, Section 1.3
"Transportation" and Section 1.4 "Storage Environment."

vi
How this manual is organized
This manual contains chapters 1 through 9, appendices and glossary.
Part 1 General Information
Chapter 1 INTRODUCTION TO FRENIC-Mini
This chapter describes the features and control system of the FRENIC-Mini series, and the recommended
configuration for the inverter and peripheral equipment.
Chapter 2 PARTS NAMES AND FUNCTIONS
This chapter contains external views of the FRENIC-Mini series and an overview of terminal blocks,
including a description of the LED display and keys on the keypad.
Chapter 3 OPERATION USING THE KEYPAD
This chapter describes inverter operation using the keypad. The inverter features three operation modes
(Running, Programming and Alarm modes) which enable you to run and stop the motor, monitor running
status, set function code data, display running information required for maintenance, and display alarm
data.
Part 2 Driving the Motor
Chapter 4 BLOCK DIAGRAMS FOR CONTROL LOGIC
This chapter describes the main block diagrams for the control logic of the FRENIC-Mini series of
inverters.
Chapter 5 RUNNING THROUGH RS485 COMMUNICATIONS (OPTION)
This chapter describes an overview of inverter operation through the RS485 communications facility. Refer
to the user's manual of RS485 communication for details.
Part 3 Peripheral Equipment and Options
Chapter 6 SELECTING PERIPHERAL EQUIPMENT
This chapter describes how to use a range of peripheral equipment and options, FRENIC-Mini's
configuration with them, and requirements and precautions for selecting wires and crimp terminals.
Part 4 Selecting Optimal Inverter Model
Chapter 7 SELECTING OPTIMAL MOTOR AND INVERTER CAPACITIES
This chapter provides you with information about the inverter output torque characteristics, selection
procedure, and equations for calculating capacities to help you select optimal motor and inverter models. It
also helps you select braking resistors.

vii
Part 5 Specifications
Chapter 8 SPECIFICATIONS
This chapter describes specifications of the output ratings, control system, and terminal functions for the
FRENIC-Mini series of inverters. It also provides descriptions of the operating and storage environment,
external dimensions, examples of basic connection diagrams, and details of the protective functions.
Chapter 9 FUNCTION CODES
This chapter contains overview lists of seven groups of function codes available for the FRENIC-Mini
series of inverters and details of each function code.
Appendices
App.A Advantageous Use of Inverters (Notes on electrical noise)
App.B Suppressing Harmonics for General-purpose Inverters
App.C Japanese Guideline for Suppressing Harmonics for Customers Receiving High Voltage or Special
High Voltage
App.D Effect on Insulation of General-purpose Motors Driven with 400 V Class Inverters
App.E Inverter Generating Loss
App.F Conversion from SI Units
App.G Allowable Current of Insulated Wires
App.H Replacement Information
Glossary
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 prove handy when performing certain settings or
operations.
This icon indicates a reference to more detailed information.