Hitachi SJ700-2 Series - SET-Freq

Chapter 5 Instruction Words
5 - 30
Variable name Range of values Default Unit Data size Attribute
SET-Freq
Output frequency
setting
0 to 40000 0 0.01 Hz
Unsigned
1-word data
Readable
and writable
- Explanation
This variable can be used to read and write the frequency specified by the output frequency setting
(F001) in the inverter. (See Notes 1 and 2.) The setting of this variable corresponds to inverter
parameter "F001". The data written to this variable is not stored in the inverter's EEPROM. This variable
will restore the initial setting when the inverter power is turned off. When the inverter receives an
operation command (FW = 1 or RV = 1), it accelerates the motor up to the frequency that was set last.
Note 1: To reflect the frequency written in this variable as the set frequency, you must change the setting
of frequency source setting (A001) to "07" (PRG).
Note 2: This variable can be read regardless of the setting of "A001". The currently applied set frequency
is read from this variable.
- Sample program: Program to alternately repeat forward rotation of the motor at 60 Hz and reverse
rotation at 10 Hz
(Code area [Code Window])
entry
LOOP SET-Freq= 6000 : Set the output frequency to 60 Hz.
FW= 1 : Start forward rotation of the motor.
wait FA1 = 1 : Wait until the output frequency reaches the set
frequency.
wait 10.00 : Operate the motor for 10 seconds.
FW= 0 : Decelerate and stop the motor.
wait RUN = 0 : Wait until the motor stops.
SET-Freq= 1000 : Change the set frequency to 10 Hz.
RV= 1 : Start reverse rotation of the motor.
wait FA1 = 1 : Wait until the output frequency reaches the set
frequency.
wait 10.00 : Operate the motor for 10 seconds.
RV= 0 : Decelerate and stop the motor.
wait RUN = 0 : Wait until the motor stops.
goto LOOP
end
(Parameter)
A001 = 07