Introduction - Hitachi WJ200-001S Instruction Manual

42

Introduction

The previous material in Chapter 3 gave a reference listing of all the programmable
functions of the inverter. We suggest that you first scan through the listing of inverter
functions to fain a general familiarity. This chapter will build on that knowledge in the
following ways:
1. Related functions – Some parameters interact with or depend on the settings in
other functions. This chapter lists "required settings" for a programmable function to
serve as a cross-reference and an aid in showing how function interacts.
2. Intelligent terminals – Some functions rely on an input signal on a control logic
connector terminal, or generate output signals in other cases.
3. Electrical interfaces – This chapter shows how to make connections between the
inverter and other electrical devices.
4. Auto Tuning Performance – This chapter shows how to perform auto tuning so to
achieve good performance of the motor control.
5. Positioning Performance – This chapter shows how to realize simple positioning by
using encoder (PG) feedback.
6. PID Loop Operation – The WJ200 has a built-in PID loop that calculates the optimal
inverter output frequency to control an external process. This chapter shows the
parameters and input/output terminals associated with PID loop operation.
7. Multiple motors – A single WJ200 inverter may be used with two or more motors in
some types of applications. This chapter shows the electrical connections and inverter
parameters involved in multiple-motor applications.
The topics in this chapter can help you decide the features that are important to your
application, and how to use them. The basic installation covered in Chapter 2
concluded with the powerup test and running the motor. Now, this chapter starts from
that point and shows how to make the inverter part of a larger control or automation
system.
Caution Messages for Operating Procedures
Before continuing, please read the following Caution messages.
CAUTION: The heat sink fins will have a high temperature. Be careful not to touch
them. Otherwise, there is the danger of getting burned.
CAUTION: The operation of the inverter can be easily changed from low speed to high
speed. Be sure to check the capability and limitations of the motor and machine before
operating the inverter. Otherwise, it may cause injury to personnel.
CAUTION: If you operate a motor at a frequency higher than the inverter standard
default setting (50Hz/60Hz), be sure to check the motor and machine specifications
with the respective manufacturer. Only operate the motor at elevated frequencies after
getting their approval. Otherwise, there is the danger of equipment damage.