MITSUBISHI ELECTRIC 700 Series - Manual (Page 32)

27
Inverter Status Monitoring, Special Registers
for Control
1
P
L
C
FU
N
C
TI
O
N
(2) Set frequency (RAM) (D9144)
The D9144 data is written to the RAM as a set frequency. The unit is 0.01Hz.
(For example, 6000 indicates 60.00Hz.)
When the speed is set, the speed is either 1r/min or 0.1r/min.
The range where the frequency can be set is 0 to 12000 (0 to 120.00Hz).
When the frequency setting is written normally, the write completion signal (X24)
turns on, and at the same time, 0 is set to D9150.
If any value outside the range is written, HFFFF is set to D9150 as soon as the
write completion signal (X24) turns on, resulting in abnormal completion. If
abnormal completion occurs, the set frequency is not changed.
<Set frequency write (RAM) program example>
The following program changes the set frequency (RAM) to 30Hz.
POINT
• The frequency can be set in the PU operation mode and NET operation
mode. Refer to the inverter instruction manual (applied).
Set frequency write (RAM) setting request
Normal write
Abnormal write
Turns on set frequency
write (RAM) command pulse.
Check whether set frequency
write (RAM) completion signal
turned on to judge whether write
was performed normally or not.
Stores 3000 (30Hz) into D9144,
and turns on set frequency write
(RAM) command.
(Until completion signal turns on)