Introduction - Hitachi L100 Instruction Manual

4–2

Introduction

Caution Messages for Operating Procedures
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Introduction

The previous chapter gave a reference listing of all the programmable functions of the
inverter. We suggest that you first scan through the previous chapter's listing of inverter
functions to gain 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 functions interact.
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. PID Loop Operation – the L100 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.
5. Multiple motors – a single L100 inverter may be used with two or more motors in
some types of applications. This chapter shows the electrical connections involved in
multiple-motor applications.
The topics in this chapter can help you decide which features 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.
Before continuing, please read the following safety 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 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.