Step 5 – Set the motor rated frequency This is the maximum frequency the motor can run and allows the J7 to properly control the motor. Read the rated frequency (in Hz) on the motor nameplate, and enter this into parameters n09 and n11. Step 6 – Set the operation command This is the method for motor run and stop commands (i.e. how the inverter will start and stop the motor). The two basic operations are for the RUN and STOP/RESET keys on the Digital Operator, or for one of multi-function inputs through the control circuit terminals. To set the operation command, enter the appropriate value into parameter n02: 0 = RUN and STOP/RESET keys on the Digital Operator are enabled.
1 = Multi-function inputs through the control circuit terminals. The diagram to the below shows how to connect a switch to start/stop the motor in the forward direc- tion in “2-wire control”. Set parameter n02=1. To enable a separate switch for reverse rotation on con- trol terminal S2, set parameter n36=2 (this is actually the factory default setting for n36). FWD RUN/STOP REV RUN/STOP Step 7 – Set the frequency reference This is the method for selecting the source for the motor speed command. The factory default is for the potentiometer on the digital Operator (FREF adjuster), in which case no setting is required.
Frequency reference can also come from an external potentiometer, an analog output from a PLC, or up to 8 pre-programmed speeds held in the inverter and selected via the multi-function inputs. For example, to accept frequency reference from an external potentiometer, or a 0-10V analog out from a PLC, set parameter n03=2. ( ) FS FREQUENCY SETTING POWER +12V, 20mA MASTER SPEED FREQUENCY REFERENCE (0 TO +10V) FR FC(0V)