Frequently Asked Questions - Hitachi X200 Series Instruction Manual

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Frequently Asked Questions

Q. What is the main advantage in using an inverter to drive a motor, compared to
A. An inverter can vary the motor speed with very little loss of efficiency, unlike
Q. The term "inverter" is a little confusing, since we also use "drive" and "amplifier" to
describe the electronic unit that controls a motor. What does "inverter" mean?
A. The term
Q. Although the X200 inverter is a variable speed drive, can I use it in a fixed-speed
application?
A. Yes, sometimes an inverter can be used simply as a "soft-start" device,
Q. Can I use an inverter and AC induction motor in a positioning application?
A. That depends on the required precision, and the slowest speed the motor must
Q. Can the inverter be controlled and monitored via a network?
A. Yes. X200 inverters have built-in ModBus communications.
Q. Why does the manual or other documentation use terminology such as "200V class"
instead of naming the actual voltage, such as "230 VAC"
A. A specific inverter model is set at the factory to work across a voltage range
NOTE: The European 200V class inverter is for single phase input (-SFE), while the
USA 200V class inverter is for 3/single phase input (-NFU up to 2.2kW) and 3-phase
input (-LFU) 3.7kW.
alternative solutions?
mechanical or hydraulic speed control solutions. The resulting energy savings
usually pays for the inverter in a relatively short time.
inverter, drive,
industry. Nowadays, the term
drive inverter
, and are generally used to describe electronic, microprocessor-
based motor speed controllers. In the past,
various mechanical means to vary speed.
exclusively used to describe drives for servo or stepper motors.
providing controlled acceleration and deceleration to a fixed speed. Other
functions of the X200 may be useful in such applications, as well. However,
using a variable speed drive can benefit many types of industrial and
commercial motor applications, by providing controlled acceleration and
deceleration, high torque at low speeds, and energy savings over alternative
solutions.
turn and still deliver torque. The X200 inverter will deliver full torque while
turning the motor at 6Hz (180RPM). DO NOT use an inverter if you need the
motor to stop and hold the load position without the aid of a mechanical brake
(use a servo or stepper motion control system).
more information on network communications.
particular to the destination country for that model. The model specifications
are on the label on the side of the inverter. A European 200V class inverter
("EU" marking) has different parameter settings than a USA 200V class.
and amplifier are used somewhat interchangeably in
drive variable-frequency drive
,
variable-speed drive
variable-speed
,
also referred to
Amplifier
is a term almost
See Appendix B for