Hitachi SJ Series, Руководство пользователя

Страница: 460 / 786

12-25-13
Chapter 12
About the inverter function
Analog monitor adjustment mode: [FM] output
• Setting the analog monitor adjustment mode
[Cd-10] to 01 fixes the output of the [FM] output
terminal.
(Example) Outputting the output current monitor with
the PWM output
• I want to perform outputting with a PWM output of
100% when a current corresponding to the inverter
rated current flows.
(The standard point is the inverter rated current.)
Code Name
Output scale range
(Corresponding to 0 to 10 V
/ 0 to 20 mA)
dA-02
Output
current
monitor (0.00 to 2.00) × Inverter
rated current (A)
Set [Cd-01]=00 and [Cd-03]=(dA-02). Setting
[Cd-10] to 01 outputs PWM from the [FM] terminal
in accordance with [Cd-12].
When the standard point at which you want to
perform outputs is the rated current value, since
the rated current has a maximum scale of Rated
current × 2.00, set a point that is half of it. First set
[Cd-12] to 50.0% (corresponding to the inverter
rated current).
In this state, since the full scale of the output current
monitor is Rated current × 2.00, the [FM] terminal
outputs PWM of 50% duty, which is an output at the
rated current (= Rated current × 2.00 × 50.0%).
• With the fixed output, an output set with [Cd-12] is
made for the full-scale value of the monitor
selected with [Cd-03].
Adjust the inclination with [Cd-14]. Change
[Cd-14] to make an adjustment toward the point
from which PWM of 100% duty is output.
(For example, see and wait with a range from
190.0
％
to 210.0
％
.)
[Cd-13]=0.0%
、
[Cd-14]=200.0%
Returning [Cd-10] to 00 starts the PWM output of
[FM] that is adjusted.
1
2
3
4
Output current (A)
t/T(%)
100
0
Rated current × 2
(A)
0A
50
Rated current (A)
[Cd-14]=200.0%
Output current (A)
t/T(%)
100
0
Rated current × 2
(A)
0A
50
Rated current (A)