Hitachi SJ300-037HFE 사용자 설명서

Orientation to Inverter Features

In

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Please take a few moments to unpack your new SJ300 inverter and perform these steps:

1. Look for any damage that may have occurred during shipping.
2. Verify the contents of the box include:

a. One SJ300 inverter
b. One Instruction Manual (supplied by printed book for –FU/–FR models, supplied on 

CR-ROM for –FE models)

c. One SJ300 Quick Reference Guide
d. One packet of desiccant—discard (not for human consumption)

3. Inspect the specifications label on the front or side of the inverter. Make sure it matches the 

product part number you ordered.

The SJ300 Series inverters vary in size according to the current output rating and motor size for 
each model number. All feature the same basic keypad and connector interface for consistent 
ease of use. The inverter construction has a heat sink at the back of the housing. The fans 
enhance heat sink performance. Mounting holes are pre-drilled in the heat sink for your conve-
nience. Never touch the heat sink during or just after operation; it can be very hot.

The electronics housing and front panel are built onto the front of the heat sink. The front panel 
has three levels of physical access designed for convenience and safety:

• First-level access – for basic use of inverter and editing parameters during powered opera-

tion (power is ON)

• Second-level access – for wiring the inverter power supply or motor (power is OFF)

• Third-level access – for accessing the expansion bay for adding/removing expansion boards 

(power is OFF)

1. First-level Access - View the unit just as it 

came from the box as shown. The
OPE-SRE or OPE-S digital operator 
keypad comes installed in the inverter. The 
four-digit display can show a variety of 
performance parameters. LEDs indicate 
whether the display units are Hertz, Volts, 
Amperes, or kW. Other LEDs indicate 
Power (external), and Run/Stop Mode and 
Program/Monitor Mode status. Membrane 
keys Run and Stop/Reset, and a Min/Max 
frequency control knob (OPE-SRE only) 
control motor operation. These controls 
and indicators are usually the only ones 
needed after the inverter installation is 
complete.

The 

FUNC., , , 

and 

STR 

keys 

allow an operator to change the inverter’s 
functions and parameter values, or to select 
the one monitored on the 4-digit display. 
Note that some parameters may not be 
edited if the inverter is in Run mode.

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