CHAPTER 7 MAINTENANCE AND INSPECTION

7.7 Troubleshooting

The servomotor does not operate.

7

Check the connections and contact statuses of the * Before checking the connections of cables and connectors, make sure to turn off

cables or connectors for power supply and others. the power.

Check On01 (feedback speed).

Check Sn01.

* This is necessary because if deceleration feature has been applied or the motor is

operated in extremely low speed, the motor operation status cannot be checked by

visual check. Furthermore, there is a possibility of mechanical slip.

Abnormal (The motor is not in operable

condition.)

Check the cause by referring to section 6.3.

Not abnormal

Check if an alarm is raised or not.

An alarm is raised.

Check the cause by referring to section 7.3.

No alarm is raised.

Check if any command such as FWD/REV, pulse,

analog voltage, or START, etc. has been input.

Abnormal (No such command has been

inp ut.)

･ Check the sequence of the host controller.

･ Check the diagnosis of the PC loader.

Not abnormal

Check the relevant parameters.

Not abnormal

(1) In the case of pulse operation

･ PA1_01 (control mode selection)

･ PA1_03 (command pulse input method

and form setting)

(2) In the case of multi-step speed selection

operation

･ PA1_41 to 47 (manual feed speed )

･ PA3_1 to 30 (CONT signal assignment)

(3) In the case of analog command

･ PA3_31 (speed command scale)

･ PA3_35 (zero clamp level)

(4) In the case of start positioning

･ PA1_01 (control mode selection)

･ PA2_40 (internal positioning data selection)

･ Internal positioning data

(5) In the case of Modbus communications

･ PA2_97 (communication protocol selection)

･ PA2_72 (station number)

Contact us.

7-20 Troubleshooting