Fuji Electric FRENIC-HVAC User Manual page 589

y98 Bus Link Function (Mode selection)
Refer to the description of H30.
y99 Loader Link Function (Mode selection)
This is a link switching function for FRENIC Loader. Rewriting the data of y99 to enable
RS-485 communications from Loader helps Loader send the inverter the frequency and/or
run commands. Since the data to be set in the function code of the inverter is automatically set
by Loader, no keypad operation is required.
With Loader being selected as a run command source, if the computer runs out of control and
cannot be stopped by a stop command sent from Loader, disconnect the RS-485
communications cable from the port 1 or the USB cable, connect a keypad instead, and reset
the y99 data to "0." The setting of "0" in y99 means that the run and frequency command
source specified by H30 takes place instead of FRENIC Loader.
Note that the inverter cannot save the setting of y99. When the power is turned off, the data in
y99 is lost (y99 is reset to "0").
Data for y99
0
1
2
3
Frequency command
Follow H30 and y98 data
Via RS-485 link (FRENIC Loader)
Follow H30 and y98 data
Via RS-485 link (FRENIC Loader)
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6.3 Details of Function Codes
(Refer to H30.)
Function
Run command
Follow H30 and y98 data
Follow H30 and y98 data
Via RS-485 link (FRENIC Loader)
Via RS-485 link (FRENIC Loader)