Mitsubishi Electric A173UHCPU Programming Manual page 8

(6) Usage methods
Immediately turn OFF the power if smoke, abnormal sounds or odors are emitted from the
control unit, servo amplifier or servomotor.
Always execute a test operation before starting actual operations after the program or
parameters have been changed or after maintenance and inspection.
The units must be disassembled and repaired by a qualified technician.
Do not make any modifications to the unit.
Keep the effect or magnetic obstacles to a minimum by installing a noise filter or by using
wire shields, etc. Magnetic obstacles may affect the electronic devices used near the control
unit or servo amplifier.
Use the units with the following conditions.
Item
Input power
Input frequency
Tolerable momentary
power failure
(7) Remedies for errors
If an error occurs in the self diagnosis of the control unit or servo amplifier, confirm the
check details according to the instruction manual, and restore the operation.
If a dangerous state is predicted in case of a power failure or product failure, use a
servomotor with magnetic brakes or install a brake mechanism externally.
Use a double circuit construction so that the
magnetic brake operation circuit can be
operated by emergency stop signals set
externally.
If an error occurs, remove the cause, secure
the safety and then resume operation.
The unit may suddenly resume operation
after a power failure is restored, so do not go
near the machine. (Design the machine so
that personal safety can be ensured even if
the machine restarts suddenly.)
(8) Maintenance, inspection and part replacement
Perform the daily and periodic inspections according to the instruction manual.
Perform maintenance and inspection after backing up the program and parameters for the
control unit and servo amplifier.
Do not place fingers or hands in the clearance when opening or closing any opening.
Periodically replace consumable parts such as batteries according to user's manual, or the
instruction manual for the product you are using.
CAUTION
Conditions
According to the separate instruction manual.
According to the separate instruction manual.
According to the separate instruction manual.
CAUTION
CAUTION
− VII −
Shut off with servo ON signal OFF,
alarm, magnetic brake signal.
Servo motor
Magnetic
brakes
Shut off with the
emergency stop
signal(EMG).
RA1
EMG
24VDC