Mitsubishi Electric M80 Series Maintenance Manual page 13

When using the RS-232C device as a peripheral device, caution must be paid for connector connection/dis-
connection. Always use a double-OFF type AC power supply switch on the device side, and connect/dis-
connect the connector with the AC power supply on the device side OFF.
NC unit
Using a stabilized power supply without overcurrent protection may cause the unit's failure due to miswir-
ing of 24V.
12V, 5V, and 3.3V output from connectors are to supply the power for dedicated peripheral devices. Do not
use for other equipment to supply the power since we do not guarantee the NC operation by voltage down
or noise sneaking.
When using an inductive load such as a relay, always connect a diode in parallel to the load to prevent a
counter-electromotive force.
When the rush current exceeds the maximum output current, always connect a protective resistor serially
to the load to suppress rush currents.
The wires from the surge absorber should be connected without extensions.
(4) Set up
Do not cancel the emergency stop before confirming the basic operation.
Always set the stored stroke limit. Failure to set this could result in collision with the machine end.
If the battery low warning is issued, save the machining programs, tool data and parameters in an input/
output device, and then replace the battery. When the battery alarm is issued, the machining programs, tool
data and parameters may be destroyed. Reload the data after replacing the battery.
Do not adjust the spindle when possible risks associated with adjustment procedures are not thoroughly
taken into consideration.
Be careful when touching spindle's rotating section, or your hand may be caught in or cut.
(5) Adjustments
Check and adjust programs and each parameter before starting operation. Failure to observe this could re-
sult in unpredictable operations depending on the machine.
Do not make drastic adjustments or changes as the operation could become unstable.
Device
RS-232C
CAUTION
Switch
WARNING
CAUTION
CAUTION
AC socket