Hitachi NT2021XA Instruction Manual page 42

Chapter 2 Syntax
- Sample program : Program to make the inverter alternately repeat forward rotation of the motor at 60 Hz and reverse
rotation of the motor at 10 Hz
Label Mnemonic
U(00)=
ACCEL=
DECEL=
LOOP SET-Freq=
FW=
wait
delay off
wait
delay on
SET-Freq=
wait
RV=
Wait
goto
- Example of operation (timing chart)
TC (0)
Comparison
for matching
TD (0)
Y (00)
delay on Y (00) TD (0) 1000
parameter1 parameter2
1
RUN =
FW TD(0)
RUN =
RV TD(0)
FM =
0
RUN =
LOOP
2^31-1
1000
Timing chart for operation using the delay on and delay off instructions
parameter3 parameter4 parameter5
1000
1000
1000
6000
1
15.00
0
1.00
1000
U(00)
0
1500
delay off Y (00) TD (0) 1500
2-26
: The output frequency for reverse rotation
is 10 Hz.
: Set the acceleration time to 10 seconds.
: Set the deceleration time to 10 seconds.
: Accelerate the forward rotation speed up
to 60 Hz.
: Wait until the motor operates at 60 Hz.
: Start the 15-second timer counter.
: Turn the FW terminal off after 15 seconds
elapse.
: Wait until the motor stops.
: Start reverse rotation after 1 second
elapses.
: Accelerate the reverse rotation speed up
to 10 Hz.
: Wait until the output frequency reaches
10 Hz.
: Decelerate and stop the motor.
: Wait until the motor stops.
timer off TD (0)
2^31-1