Fuji Electric Frenic-Mini User manual

Compact Inverter
User's Manual

Copyright © 2002-2005 Fuji Electric FA Components & Systems Co., Ltd.
All rights reserved.
No part of this publication may be reproduced or copied without prior written permission from Fuji Electric
FA Components & Systems 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.
Listed below are the other materials related to the use of the FRENIC-Mini. Read them in conjunction with
this manual as necessary.
• FRENIC-Mini Instruction Manual (INR-SI47-0791-E)
• RS485 Communication User's Manual (MEH448)
• Catalog (MEH441/MEH451)
• Application Guide (MEH449)
• RS485 Communications Card Installation Manual (INR-SI47-0773)
• Rail Mounting Base Installation Manual (INR-SI47-0774)
• Mounting Adapter Installation Manual (INR-SI47-0775)
• FRENIC Loader Instruction Manual (INR-SI47-0903-E)
• Remote Keypad Instruction Manual (INR-SI47-0843-E)
• Built-in Braking Resistor Installation Manual (INR-SI47-0838)
The materials are subject to change without notice. Be sure to obtain the latest editions for use.
Documents related to Fuji inverters
Catalogs
FRENIC5000G11S/P11S (MEH403/MEH413)
FVR-E11S (MEH404/MEH414)
FRENIC-Eco (MEH442)
FRENIC5000VG7S (MEH405)
User's Manuals and Technical Information
FRENIC5000G11S/P11S & FVR-E11S Technical Information (MEH406)
FRENIC-Eco User's Manual (MEH456)
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 your Fuji
Electric representative 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
nPrecautions for Use
Driving a 400V
general-purpose
motor
When driving a 400V general-purpose motor with an inverter using
extremely long wires, damage to the insulation of the motor may occur. Use
an output circuit filter (OFL) if necessary after checking with the motor
manufacturer. Fuji motors do not require the use of output circuit filters
because of their good insulation.
Torque
characteristics
and temperature
rise
When the inverter is used to run a general-purpose motor, the temperature
of the motor becomes higher than when it is operated using 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
When an inverter-driven motor is mounted to a machine, resonance may be
caused by the natural frequencies of the machine system.
Note that operation of a 2-pole motor at 60 Hz or higher may cause
abnormal vibration.
* The use of a rubber coupling or vibration dampening rubber is
recommended.
* Use the inverter's jump frequency control feature to skip the resonance
frequency zone(s).
In running
general-
purpose
motors
Noise
When an inverter is used with a general-purpose motor, the motor noise
level is higher than that with a commercial power supply. To reduce noise,
raise carrier frequency of the inverter. Operation at 60 Hz or higher can also
result in higher noise level.
High-speed
motors
If the set frequency is set to 120 Hz or more to drive a high-speed motor,
test-run the combination of the inverter and motor beforehand to check for
safe operation.
Explosion-proof
motors
When driving 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 larger rated current than general-purpose motors.
Select an inverter whose rated output current is greater than that of the
motor.
These motors differ from general-purpose motors in thermal characteristics.
Set a low value in the thermal time constant of the motor when setting the
electronic thermal overload protection.
In running
special
motors
Brake motors
For motors equipped with parallel-connected brakes, their braking power
must be supplied from the primary circuit. If the brake power is connected
to the inverter's power output circuit by mistake, the brake will not work.
Do not use inverters for driving motors equipped with series-connected
brakes.