- 23 -
Output
voltage (
%
)
0
Control input (%)
100
100
Phase control / voltage proportional output (PA-V)
Output current /control input (%)
100
Output
voltage (
%
)
0
100
25%
50%
75%
87.5%
Phase control / constant current output (current feedback)
Output
o
peration
amount
(%
)
0
Control input (%)
100
100
Cycle calculation zero voltage switching (ZC)
15-4. Control types and 5 types of output characteristics
This device enables you to switch your control type selection (2 types) according to load characteristics to either phase control by key operation
(phase angle proportional output, voltage proportional output, voltage square [electric power] proportional output, current feedback [4 modes] or
cycle calculation zero voltage switching control function [1 mode]).
Switching to current feedback can be done by selecting "Current feedback in control method" and "Current detection / alarm output function" when
you place an order.
Control type
Parameter symbol
Control type
Phase control / phase angle proportional output
Phase control / voltage proportional output
phase control / current feedback *When current detection /alarm output function (optional) is added
Phase control / voltage square (electric power) proportional output
Cycle calculation zero voltage switching control
*Remarks: Parameter symbols are displayed in the display section when power is turned on (when setting control type), depending on what type of control is selected.
15-4-1. Phase control / phase angle proportional output
You can obtain phase angle output proportional to
control input signal.
This function enables finer output control than
cycle output control.
You should use the current limit function and
variation limit function in combination for load
with significant inrush current.
15-4-2. Phase control / voltage proportional output
You can obtain output voltage proportional to control input signal.
The current limit function is necessary for large inrush current loads.
You should use the current limit function and variation limit function in
combination for load with significant inrush current.
15-4-3. Phase control / current feedback
You can obtain output current proportional to control input signal.
If control input is constant, output current is kept constant even if load or
power supply voltage fluctuate.
15-4-4. Phase control / voltage square (electric power)
proportional output
You can obtain voltage square output proportional
to control input signal. Because power relative to
constant resistance is proportional to voltage squared,
you can obtain power according to control signal
using constant resistance heaters such as nichrome
or iron-chrome.
Use the current limit function and variation limit
function in combination for load with significant
inrush current.
15-4-5. Cycle calculation zero voltage switching
You can obtain cycle output proportional to control input.
Not as much noise is produced as with phase angle control.
Current limit is disabled.
Phase control / phase angle proportional output (PA)
100
0
100
Output
voltage (
%
)
Control input (%)
Phas
e
angl
e
proport
io
n
(%)
100
0
100
Control input (%)
Phase control / voltage square proportional output (PA-W)
100
100
0
Control input (%)
Output
voltage (
%
)
100
100
0
Control input (%)
E
lectr
ic
p
ower
(
%
)