Mitsubishi Electric M80 Series Maintenance Manual page 9

For Safe Use
MITSUBISHI CNC is designed and manufactured solely for applications to machine tools to be used for industrial purpos-
es.
Do not use this product in any applications other than those specified above, especially those which are substantially in-
fluential on the public interest or which are expected to have significant influence on human lives or properties.
1. Items related to prevention of electric shocks
Do not open or remove the front cover while the power is ON or during operation. The high voltage terminals
and charged sections are exposed, and this could result in electric shocks.
Do not remove the front cover even when the power is OFF, except for the wiring works or periodic inspec-
tions. The inside of the controller and drive unit are charged, and this could result in electric shocks.
Always wait at least 15 minutes after turning the power OFF. Then, check the voltage with a tester, etc., be-
fore wiring works, inspections or connecting with peripheral devices. Failure to observe this could result in
electric shocks.
Earth ground the controller, drive unit and motor according to the local laws. (In Japan, ground the 200V
Series input products with Class C or higher protective grounding and the 400V Series input with Class D
or higher protective grounding.)
All wiring works, maintenance and inspections must be carried out by a qualified technician. Failure to ob-
serve this could result in electric shocks. Contact your nearby Service Center for replacing parts and ser-
vicing.
Wire the controller, drive unit and motor after installation. Failure to observe this could result in electric
shocks.
Do not operate the switches with wet hands. Failure to observe this could result in electric shocks.
Do not damage, apply excessive stress, place heavy things on or sandwich the cables. Failure to observe
this could result in electric shocks.
Insulate the power lead using a fixed terminal block. Failure to observe this could result in electric shocks.
Before starting maintenance or inspections, turn the main circuit power and control power both OFF. Wait
at least fifteen minutes until the CHARGE lamp turns OFF, and then confirm that the input and output volt-
age are zero using a tester, etc. Failure to observe this could lead to electric shocks.
2. Items related to prevention of fire
Install the controller, drive unit, motor and regenerative resistor on non-combustible material. Installation
directly on or near combustible materials could result in fires.
If any malfunction in the unit is observed, shut off the power at the unit's power supply side. Continuous
flow of large current could result in fires.
Install an appropriate no fuse breaker (NFB) and contactor (MC) on the power input section of the drive unit
and configure the sequence that shuts the power off upon drive unit's emergency stop or alarm.
When a breaker is shared for multiple power supply units, the breaker may not function upon short-circuit
failure in a small capacity unit. Do not share a breaker for multiple units as this is dangerous.
Incorrect wiring and connections could cause the devices to damage or burn.
WARNING
CAUTION