Appendix 3 Control and Monitoring Specific Inverter Data
Appendix 3-6
(2) iS7 Inverter Output Frequency Monitoring
Special D register of PLC ▶ option card for inverter output frequency monitoring
Special D
Register
Function Detailed Description
D4471 Output Freq.
Current output Freq. x 100
(Ex. If D4471 value is 3125,
current output freq. is 31.25 Hz.)
Exemplary program ▶
1) Set up iS7 inverter parameters as follows.
Code Function Name Set Value
DRV01 Cmd Frequency 29.00 Hz
DRV06 Cmd Source Keypad
DRV07 Freq Ref Src Keypad-1
2) Run the KGLWIN and make out following program.
3) On the inverter’s digital loader, press “FWD” for forward operation to 29.00Hz.
4) Now, the D4471 will read “2900” as shown below.
5) Set up DRV01 (Cmd Frequency) to “30.00Hz.” The D4471 will be changed to “03000” and the M0024
relay will be ON.
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