Kikusui PLZ164W User Manual page 139

(2) External resistance control
1 mA
MAX12 V
Offset
adjustment
PLZ-4W
Connecting an external resistance in the range of 0  to 10 k to the PLZ-4W pro-
duces a wattage that is proportional or inversely proportional to the change.
Proportional control
The wattage corresponding to the external resistance of 0  is 0 W; the wattage cor-
responding to the external resistance of 10 k is 100 % of the specified range.
Inverse proportional control
The wattage corresponding to the external resistance of 10 k is 0 W; the wattage
corresponding to the external resistance of 0  is 100 % of the specified range.
Connected pins: J1-1 (signal), J1-3 (common)
J1
1
EXT R/V CONT
3
A COM
Fig. 6-34 Equivalent circuit
Pm
0 W
0
External resistor Rin
Fig. 6-35 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
0
Full scale adjustment
Pm
Proportional control
Inverse proportional control
10 k
Proportional control
Rin(k )
Po Pm
10
Inverse proportional control
Rin
Rin(k )
Po Pm 1–
10
Po: Input power
Pm: Rated power
Rin: External variable resistor
Rin approx.10 k
: Rated power
: Input power (before adjustment)
: Input power (after adjustment)
: Input power (after adjustment)
Applied Operation 6-53