Hitachi X200 Series 25, Pre-test and Operational Precautions, Powering the Inverter

2−25

Pre-test and Operational Precautions

The following instructions apply to the powerup test, or to any time the inverter is powered and operating. Please study the following instructions and messages before proceeding with the powerup test.

1.The power supply must have fusing suitable for the load. Check the fuse size chart presented in Step 5, if necessary.

2.Be sure you have access to a disconnect switch for the drive input power if necessary. However, do not turn OFF power during inverter operation unless it is an emergency.

3.Turn the keypad potentiometer to the minimum position (full counter-clockwise).

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, there is the danger of injury.

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 and/or injury.

CAUTION: Check the following before and during the Powerup test. Otherwise, there is the danger of equipment damage.

•Is the shorting bar between the [+1] and [+] terminals installed? DO NOT power or operate the inverter if the jumper is removed.

•Is the direction of the motor rotation correct?

•Did the inverter trip during acceleration or deceleration?

•Were the rpm and frequency meter readings as expected?

•Were there any abnormal motor vibration or noise?

Inverter Mounting and installation

Powering the Inverter

If you have followed all the steps, cautions and warnings up to this point, you’re ready to apply power. After doing so, the following events should occur:

•The POWER LED will illuminate.

•The numeric (7-segment) LEDs will display a test pattern, then stop at 0.0.

•The Hz LED will be ON.

If the motor starts running unexpectedly or any other problem occurs, press the STOP key. Only if necessary should you remove power to the inverter as a remedy.

NOTE: If the inverter has been previously powered and programmed, the LEDs (other than the POWER LED) may illuminate differently than as indicated above. If necessary, you can initialize all parameters to the factory default settings. See “Restoring Factory Default Settings” on page 6-8.