PLZ-4W
Applied Operation 6-47
(2) External resistance control
Connecting an external resistance in the range of 0
Ω
to 10 k
Ω
to the PLZ-4W pro-
duces an input current that is proportional or inversely proportional to the change.
Proportional control
The input current corresponding to the external resistance of 0
Ω
is 0 A; the input
current corresponding to the external resistance of 10 k
Ω
is 100 % of the speci
fi
ed
range.
Inverse proportional control
The input current corresponding to the external resistance of 10 k
Ω
is 0 A; the input
current corresponding to the external resistance of 0
Ω
is 100 % of the speci
fi
ed
range.
Connected pins: J1-1 (signal), J1-3 (common)
Fig. 6-26
Equivalent circuit
Fig. 6-27
Control the current using external resistance
J1
Rin
Io: Input current
Im: Rated current
Rin: External variable resistor
0
≤
Rin
≤
Approx. 10 k
Ω
Rin(k
Ω
)
10
Io
≈
Im
Rin(k
Ω
)
10
1 mA
MAX12 V
1
3
A COM
EXT R/V CONT
Proportional control
Inverse proportional control
1 –
Io
≈
Im
Twist
Im
Im
0A
External resistor Rin
0
Ω
Input current Io
: Rated current
: Input current (before adjustment)
: Input current (after adjustment)
: Input current (after adjustment)
10k
Ω
Proportional control
Inverse proportional control
Offset
adjustment
Full scale adjustment
Содержание PLZ-4W Series
Страница 10: ...VIII Contents PLZ 4W ...
Страница 20: ...1 10 General Information PLZ 4W ...
Страница 38: ...2 18 Installation and Preparation PLZ 4W ...
Страница 90: ...5 30 Basic Operation PLZ 4W ...
Страница 192: ...9 10 Specifications PLZ 4W ...
Страница 214: ...A 22 Appendix PLZ 4W ...