1 INTRODUCTION
1.4 Wiring check
15
1
• Check that the power to be supplied to the converter unit is not connected to the power outputs (U/V/W) of the drive unit.
Otherwise, the drive unit and the servo motor will malfunction.
• Check that the grounding terminal of the servo motor is connected to the grounding terminal of the CNP3_ connector of the
drive unit.
• Check that the CN2A connector and the encoder of the A-axis servo motor, the CN2B connector and the encoder of the B-
axis servo motor, and the CN2C connector and the encoder of the C-axis servo motor are securely connected in the drive
unit using a motor cable or encoder cable.
I/O signal wiring
• Check that I/O signals are connected correctly.
If the DO forced output mode is used, the pins of the CN3 connector can be forcibly switched on/off. This mode is used to
check the wiring. In this case, switch on the control circuit power supply only. Refer to the following page for information on
connecting I/O signals.
Page 48 Example I/O signal connections
• Check that a voltage exceeding 24 V DC has not been applied to the pins of the CN3 connector.
M
U
V
W
U
V
W
Drive unit
Servo motor
M
E
E
Drive unit
Servo motor
