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Choosing a Programming Device
Configuring
Drive Parameters
3–2
Choosing a Programming Device
Introduction
Hitachi variable frequency drives (inverters) use the latest electronics technology for
getting the right AC waveform to the motor at the right time. The benefits are many,
including energy savings and higher machine output or productivity. The flexibility
required to handle a broad range of applications has required ever more configurable
options and parameters—inverters are now a complex industrial automation component.
And this can make a product seem difficult to use, but the goal of this chapter is to make
this easier for you.
As the powerup test in Chapter 2 demonstrated, you do not have to program very many
parameters to run the motor. In fact, most applications would benefit only from program-
ming just a few, specific parameters. This chapter will explain the purpose of each set of
parameters, and help you choose the ones that are important to your application.
If you are developing a new application for the inverter and a motor, finding the right
parameters to change is mostly an exercise in optimization. Therefore, it is okay to begin
running the motor with a loosely tuned system. By making specific, individual changes
and observing their effects, you can achieve a finely tuned system. And, the SJ200 Series
inverters feature intelligent sensorless vector control (iSLV) to eliminate the need for
manually setting motor parameters, or even to do an auto-tuning procedure.
Introduction to Inverter Programming
The front panel keypad is the first and best way to get to know the inverter’s capabilities.
Every function or programmable parameter is accessible from the keypad. The other
devices simply imitate the keypad’s layout and inverter access, while adding another
valuable aspect to the system. For example, the Digital Operator/Copy Unit can transfer
one inverter’s parameter settings to another inverter, while still providing standard
operator keypad control. In this way, you can use a variety of programming devices with
basically the same keypad skills. The following table shows various programming
options, the features unique to each device, and the cables required.
NOTE: When an external digital operator device such as an OPE–SRmini or
SRW–0EX is connected to the inverter, the inverter’s keypad is automatically disabled
(except for the Stop Key).
Device
Part
Number
Parameter
Access
Parameter
setting
storage
Cables (choose one)
Part number Length
Inverter keypad,
removable
OPE–SRmini Monitor and
program
EEPROM in
inverter
ICS–1 1 meter
ICS–3 3 meters
Digital Operator/
Copy Unit
SRW–0EX Monitor and
program
EEPROM in
operator panel
ICS–1 1 meter
ICS–3 3 meters