6.1.22.2. Causes and examine methods

(1) Examine the Motor power line.

n Check the wiring that connects the Robot and Controller.

n Check the Robot’s internal wiring.

n Check the Controller’s internal wiring.

(2) Examine the CNBS cable between the Controllers’ internal Servo Board and the Servo AMP.

(3) Replace other components.

(1) Examine the power line

Please turn off the primary power and remove the U, V, and W of drive unit for the corresponding axis and examine if short circuit exists in each phase. Please use equipment such as the multi meter (tester) and examine each phase’s wiring one by one.

Warning

Be cautious. Examination while the power is on may cause an electrocution.

n Check the wiring that connects the Robot and Controller

Please remove the wirings that connect the controller, Robot or the drive unit to examine each phases (U, V, W) for ground, or a short circuit. If a short circuit is found, please replace the wire.

Figure 1.102 Basic Installation Diagram of the Robot and Control Period

n Check the Robot’s internal wiring.

Examine for a short circuit, faulty on a wiring that connected to Robot’s internal motor is required.

Figure 1.103 Robot’s Internal Wiring

n Check the Controller’s internal wiring.

Examine on a controller’s internal AMP and installed wiring is required.

Figure 1.104 Controller internal side (Power unit)

(2) Examine the CNBS cable between the Controller’s internal Servo Board (DSP board) and the Drive Unit.

Please examine if the CNBS cable is installed properly. If the cable is not installed properly, or the cable is faulty, this error may occur.

Figure 1.105 Controller internal side (CNBS Cable)

(3) Replace other components.

Replace the component in order of Servo Board → Servo Drive Unit → Motor to confirm the occurrence of an error’.

Figure 1.106 Replacing other parts (such as servo boards, servo drive units, and motors)

6.1.22.2. Causes and examine methods​

6.1.22.2. Causes and examine methods