Mitsubishi Electric MELDAS MDS-R Series Technical Specification And Instruction Manual page 12

(2) Wiring
Correctly and securely perform the wiring. Failure to do so could lead to abnormal operation of
the motor.
Do not install a condensing capacitor, surge absorber or radio noise filter on the output side of
the drive unit.
Correctly connect the output side of the drive unit (terminals U, V, W). Failure to do so could
lead to abnormal operation of the motor.
When using a power regenerative power supply unit, always install an AC reactor for each
power supply unit.
In the main circuit power supply side of the unit, always install an appropriate no-fuse breaker
or contactor for each unit. No-fuse breaker or contactor cannot be shared by several units.
Always connect the motor to the drive unit's output terminals (U, V, W).
Do not directly connect a commercial power supply to the servomotor. Failure to observe this
could result in a fault.
When using an inductive load such as a relay, always connect a diode as a noise measure
parallel to the load.
When using a capacitance load such as a lamp, always connect a protective resistor as a noise
measure serial to the load.
Do not reverse the direction of a diode
which connect to a DC relay for the
control output signals such as
contractor and motor brake output, etc.
to suppress a surge. Connecting it
backwards could cause the drive unit to
malfunction so that signals are not
output, and emergency stop and other
safety circuits are inoperable.
Do not connect/disconnect the cables connected between the units while the power is ON.
Securely tighten the cable connector fixing screw or fixing mechanism. An insecure fixing could
cause the cable to fall off while the power is ON.
When using a shielded cable instructed in the instruction manual, always ground the cable with
a cable clamp, etc.
Always separate the signals wires from the drive wire and power line.
Use wires and cables that have a wire diameter, heat resistance and flexibility that conforms to
the system.
CAUTION
Servodrive unit
COM
(24VDC)
Control output
RA
signal
Servodrive unit
COM
(24VDC)
Control output
RA
signal