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3. SIGNALS AND WIRING
CAUTION
Connect the servo amplifier power output (U/V/W) to the servo motor power input
(U/V/W) directly. Do not let a magnetic contactor, etc. intervene. Otherwise, it may
cause a malfunction.
U
Servo motor
M
V
W
U
V
W
U
Servo motor
MV
W
U
V
W
Servo amplifier
Servo amplifier
3.1 Input power supply circuit
CAUTION
Always connect a magnetic contactor (MC) between the main circuit power supply,
and L
1 and L2 of the servo amplifier to configure a circuit that shuts down the
power on the servo amplifier's power supply side. If a magnetic contactor (MC) is
not connected, continuous flow of a large current may cause a fire when the servo
amplifier malfunctions.
Use the trouble (ALM) to switch power off. Otherwise, a regenerative transistor
fault or the like may overheat the regenerative resistor, causing a fire.
Before unplugging the CNP1 connector from the servo amplifier, disconnect the
lead of the built-in regenerative resistor from the CNP1 connector. Otherwise, the
lead of the built-in regenerative resistor may break.
For main circuit power supply of servo amplifier, check the model of servo amplifier
and input the correct voltage. If a voltage exceeding the upper limit shown in the
servo amplifier input voltage specification is input, the servo amplifier malfunctions.
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