Kikusui PLZ164W User Manual page 141

(2) External resistance control
1 mA
MAX12 V
EXT R/V CONT
Offset
adjustment
PLZ-4W
Connecting an external resistance in the range of 0  to 10 k 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  is 0 V; the voltage corre-
sponding to the external resistance of 10 k is 100 % of the specified range.
Inverse proportional control
The voltage corresponding to the external resistance of 10 k is 0 V; the voltage
corresponding to the external resistance of 0  is 100 % of the specified range.
Connected pins: J1-1 (signal), J1-3 (common)
J1
1
3
A COM
Fig. 6-38 Equivalent circuit
Vm
0 V
0
External resistor Rin
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".
Twist
Full scale adjustment
Vm
Proportional control
Inverse proportional control
10 k
Proportional control
Rin(k )
Vo Vm
10
Inverse proportional control
Rin
Rin(k )
Vo Vm 1–
10
Vo: Input voltage
Vm: Rated voltage
Rin: External variable resistor
0 Rin approx.10 k
: Rated voltage
: Input voltage (before adjustment)
: Input voltage (after adjustment)
: Input voltage (after adjustment)
Applied Operation 6-55