3Operation 3 Operation Safety Information „ Operation and Adjustment •Be sure to confirm the permissible range of motors and machines before operation because the Inverter speed can be changed easily from low to high. •Provide a separate holding brake if necessary. Precautions for Use „ Error Retry Function •Do not come close to the machine when using the error retry function because the machine may abruptly start when stopped by an alarm. •Be sure to confirm the RUN signal is turned off before resetting the alarm because the machine may abruptly start.
„ Operation Stop Command •Provide a separate emergency stop switch because the STOP key on the Digital Operator is valid only when function settings are performed. •When checking a signal during the power supply and the voltage is erroneously applied to the control input terminals, the motor may start abruptly. Be sure to confirm safety before checking a signal. 3-1 WARNING Do not put on or take off the Digital Operator•control circuit terminal block•terminal block cover while the input power is being supplied. Doing so may result in a serious injury due to an electric shock. Do not remove the terminal block cover during the power supply and 5 minutes after the power shutoff.
Doing so may result in a serious injury due to an electric shock. Do not operate the Digital Operator or switches with wet hands. Doing so may result in a serious injury due to an electric shock. Do not change wiring, mode change switches, optional devices or replace cooling fans while power is being supplied. Doing so may result in a serious injury due to an electric shock. CAUTION Do not touch the Inverter fins, braking resistors and the motor, which become too hot during the power supply and for some time after the power shutoff. Doing so may result in a burn.
Take safety precautions such as setting up a molded-case circuit breaker (MCCB) that matches the Inverter capacity on the power supply side. Not doing so might result in damage to property due to the short circuit of the load.