BASIC USES OF Σ-SERIES PRODUCTS2.4.3 Step 2: Conducting a Test Run with the Motor Connected to the Machine44(4) To change motor speed or the direction of rotation, reset the user constants shownbelow.Cn-24,Cn-25 Electronic gear ratio (see page 81)Cn-02 bit 0 Reverse rotation mode (see page 54)If an alarm occurs or the motor fails to rotate during the above operation, connec-tor 1CN wiring is incorrect or the user constant settings do not match the host con-troller specifications.In this case, check the wiring and review the user constant settings, then repeatstep 1.Refer to Appendix E List of Alarm Displays and Appendix D List of User Constants.This is all that is required to complete step 1 (conducting a test run for motor without load).Whenever possible, perform tuning associated with the host controller and other neces-sary adjustments in step 1 (before installing the motor on the machine).2.4.3 Step 2: Conducting a Test Run with the Motor Connected tothe MachineAfter step 1 is complete, proceed to step 2 in which a test run is conducted with the motorconnected to the machine. The purpose of step 2 is to adjust the Servopack according to themachine characteristics.Conduct a test run according to the procedure described below.Purposes: 1) Autotuning2) Speed adjustmentSGDAServopack ServomotorConnect to the machine.NOTE Before proceeding to step 2, repeat step 1 (conducting a test run for the motor without load)until you are fully satisfied that the test has been completed successfully. Operation faults thatarise after the motor is connected to the machine not only damage the machine but may alsocause an accident resulting in injury or death. Therefore, all items including user constantssetting and wiring should be tested as conclusively as possible before step 1 is complete.2
