Mitsubishi Electric C70 Connection Manual page 5

For Safe Use
This product is not designed or manufactured on the assumption that the product will be used for the
equipment or systems that are to be subject to any fatal consequences. Please inquire our customer
service department about any particular usage other than the normal usage as a machine tool.
1. Items related to prevention of electric shocks.
Do not open/close the front cover while the power is ON or during operation. The high voltage terminals and
charged sections will be 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 inspections.
The inside of the controller and servo 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., before
wiring works, inspections or connecting with peripheral devices. Failure to observe this could result in electric
shocks.
Earth ground the controller, servo drive unit and servomotor 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 observe
this could result in electric shocks. Contact your nearby Service Center or Service Station for replacing parts
and servicing.
Wire the controller, servo drive unit and servomotor 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.
Completely turn off the all lines of the power supply externally before wiring. Not completely turning off all power
could result in electric shock or damage to the product.
When turning on the power supply or operating the module after wiring, be sure that the module's terminal
covers are correctly attached. Not attaching the terminal cover could result in electric shock.
WARNING