Kikusui PLZ164W User Manual page 137

(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 resistance that is proportional or inversely proportional to the change.
Proportional control
The external voltage of 0  and 10 k correspond to the maximum and minimum
resistances of the range, respectively.
Inverse proportional control
The external voltage of 10 k and 0  correspond to the maximum and minimum
resistances of the range, respectively.
Connected pins: J1-1 (signal), J1-3 (common)
J1
1
EXT R/V CONT
3
A COM
Fig. 6-30 Equivalent circuit
Gm
0S
0
External resistor Rin
Fig. 6-31 Control the resistance 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
Gm
Proportional control
Inverse proportional control
10 k
Proportional control
1
Rin(k )
Gm
R
10
0
Inverse proportional control
Rin
1
Rin(k )
1–
Gm
R
0
Gm: Rated conductance
Rin : External variable resistor
0 Rin approx.10 k
: Rated conductance (S)
: Conductance (before adjustment)
: Conductance (after adjustment)
: Conductance (after adjustment)
Applied Operation 6-51
10