Warnings and Cautions for Troubleshooting and Maintenance
WARNING: Wait at least five (5) minutes after turning OFF the input | ...... 6–2 |
power supply before performing maintenance or an inspection. Other- | |
wise, there is the danger of electric shock. | |
WARNING: Make sure that only qualified personnel will perform | ...... 6–2 |
maintenance, inspection, and part replacement. Before starting to work, | |
remove any metallic objects from your person (wristwatch, bracelet, | |
etc.). Be sure to use tools with insulated handles. Otherwise, there is a | |
danger of electric shock and/or injury to personnel. | |
WARNING: Never remove connectors by pulling on its wire leads (wires | ...... 6–2 |
for cooling fan and logic P.C.board). Otherwise, there is a danger of fire | |
due to wire breakage and/or injury to personnel. | |
CAUTION: Do not connect the megger to any control circuit terminals | .... 6–10 |
such as intelligent I/O, analog terminals, etc. Doing so could cause | |
damage to the inverter. | |
CAUTION: Never test the withstand voltage (HIPOT) on the inverter. | .... 6–10 |
The inverter has a surge protector between the main circuit terminals | |
above and the chassis ground. | |
HIGH VOLTAGE: Be careful not to touch wiring or connector terminals | .... 6–14 |
when working with the inverters and taking measurements. Be sure to | |
place the measurement circuitry components above in an insulated housing before using them.
General Warnings and Cautions
WARNING: Never modify the unit. Otherwise, there is a danger of electric shock and/ or injury.
CAUTION: Withstand voltage tests and insulation resistance tests (HIPOT) are executed before the units are shipped, so there is no need to conduct these tests before operation.
CAUTION: Do not attach or remove wiring or connectors when power is applied. Also, do not check signals during operation.
CAUTION: Be sure to connect the grounding terminal to earth ground.
CAUTION: When inspecting the unit, be sure to wait five minutes after tuning OFF the power supply before opening the cover.