3–3

SJ300 Inverter

Using Keypad Devices

Inverter Front Panel Keypad

The SJ300 Series inverter front keypad contains all the elements for both monitoring and programming parameters. The keypad layout (OPE–SRE) is shown below. All other programming devices for the inverter have a similar key arrangement and function.

 

Parameter Display

 

 

 

Power LED

Run/Stop LED

 

 

 

 

 

 

Alarm LED

 

HITACHI

POWER

 

Display Units LEDs

 

 

ALARM

Program/Monitor LED

RUN

 

5 0.0

HZ

 

 

Hertz

PRG

 

V

 

kW

Volts or Amperes

 

 

A

 

 

 

 

 

%

 

 

(kW = both ON)

 

 

 

 

 

 

 

 

 

 

 

 

Percent

Run Key Enable LED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RUN

 

STOP

 

 

 

 

 

 

RESET

 

 

 

Potentiometer Enable LED

 

 

 

 

MAX

Run Key

 

 

MIN

 

 

 

 

 

 

 

 

Potentiometer

Stop/Reset Key

FUNC.

1

2

STR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Key and Indicator Legend

•Run/Stop LED – ON when the inverter output is ON and the motor is developing torque, and OFF when the inverter output is OFF (Stop Mode).

•Program/Monitor LED – This LED is ON when the inverter is ready for parameter editing (Program Mode). It is normally OFF when the parameter display is monitoring data (Monitor Mode). However, the PRG LED will be ON whenever you are monitoring the value of parameter D001. (When the keypad is enabled as the frequency source via A001=02, you can edit the inverter frequency directly from D001 monitor display by using the Up/Down keys.)

•Run Key – Press this key to run the motor (the Run Enable LED must be ON first). Parame- ter F004, Keypad Run Key Routing, determines whether the Run key generates a Run FWD or Run REV command.

•Run Key Enable LED – is ON when the inverter is ready to respond to the Run key, OFF when the Run key is disabled.

•Stop/Reset Key – Press this key to stop the motor when it is running (uses the programmed deceleration rate). This key will also reset an alarm that has tripped.

•Potentiometer (OPE–SRE only) – allows an operator to directly set the motor speed when the potentiometer is enabled for output frequency control

•Potentiometer Enable LED – ON when the potentiometer is enabled for value entry (OPE–SRE only).

•Parameter Display – a 4-digit, 7-segment display for parameters and function codes.

•Display Units: Hertz/Volts/Amperes/kW/% - These LEDs indicate the units associated with the parameter display. When the display is monitoring a parameter, the appropriate LED is ON. In the case of kW units, both Volts and Amperes LEDs will be ON. An easy way to remember this is that kW = (V x A)/1000.

•Power LED – This LED is ON when the power input to the inverter is ON.

•Alarm LED – This LED is ON when an alarm condition has tripped the inverter. Clearing the alarm will turn this LED OFF again. See Chapter 6 for details on clearing alarms.

•Function Key – This key is used to navigate through the lists of parameters and functions for setting and monitoring parameter values.

• Up/Down ( 1 , 2 ) Keys – Use these keys to alternately move up or down the lists of parameter and functions shown in the display, and increment/decrement values.

•Store ( STR ) Key – When the unit is in Program Mode and the operator has edited a param- eter value, press the Store key to write the new value to the EEPROM. This parameter is then displayed at powerup by default. If you want to change the powerup default, navigate to a new parameter value and press the Store key.