Kikusui PLZ-4W Series, User Manual

Page: 145 / 218

PLZ-4W Applied Operation 6-55
(2) External resistance control
Connecting an external resistance in the range of 0 Ω to 10 k Ω to the PLZ-4W pro-
duces a voltage that is proportional or inversely proportional to the change.
Proportional control
The voltage corresponding to the external resistance of 0
Ω
is 0 V; the voltage corre-
sponding to the external resistance of 10 k Ω is 100 % of the speci fi ed range.
Inverse proportional control
The voltage corresponding to the external resistance of 10 k Ω is 0 V; the voltage
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. 6-38 Equivalent circuit
Fig. 6-39 Control the wattage using external resistance
■
The setup procedure is the same as with CC mode.
See page 6-45 “Setup procedure for external voltage control”.
1
J1
Rin
Vo ≈ Vm
Vo: Input voltage
Vm: Rated voltage
Rin: External variable resistor
0 ≤ Rin ≤ approx. 10 k Ω
Rin(k
Ω
)
10
Vo
≈
Vm
Rin(k
Ω
)
10
3
Proportional control
Inverse proportional control
1 mA
MAX12 V
A COM
EXT R/V CONT
1
–
Twist
Vm
Vm
0 V
External resistor Rin
0
Ω
: Rated voltage
: Input voltage (before adjustment)
: Input voltage (after adjustment)
: Input voltage (after adjustment)
Proportional control
Inverse proportional control
Input voltage V
o
10 k
Ω
Offset
adjustment
Full scale adjustment