PLZ-4WL
85
5
Ext
e
rnal
C
ontr
o
l
Controlling Constant Resistance Mode (CR Mode) Externally
When you apply an external voltage of 0 V to 10 V to the PLZ-4WL, the resistance varies in
accordance with the voltage.
An external voltage of 0 V results in the maximum resistance. An external voltage of 10 V
results in the minimum resistance.
The precision of the PLZ-4WL cannot be guaranteed for voltages below 0 V or above 10 V.
Connected pins: J1-1 (signal), J1-2 (common)
To avoid noise interference, use a highly stable, low-noise external voltage source and
twisted signal wires.
1
Turn the POWER switch off.
2
Connect the external voltage across pins 1 and 2 of the J1 connector.
3
Turn the POWER switch on, and make sure that the load is off.
4
Set the operation mode and the current range.
If you also want to control the current range externally, be sure to set the range to H.
5
From the menu, select “2. Configuration” > “3.External” > “Control CC/
CR/CP” > “ON.”
Doing so enables the external control of CC, CR, and CP mode.
6
Turn the power switch off and then on again.
The menu settings are applied.
CAUTION
To avoid damaging the PLZ-4WL, observe the following precautions.
• The maximum voltage that can be applied across pins 1 and 2 of the J1 connector is ±11 V.
Do not apply a voltage that exceeds this value.
• Pin 2 of the J1 connector is connected the negative load input terminal. Make sure that the
wire of pin 2 does not touch any of the other pins.
Gm×Ein
10
1
R
0
R
0
: Operating resistance
Ein : External voltage
0 ≤ Ein ≤ 10 V
Gm
: Rated conductance
1
2
J1
+
Ein
A COM
EXT CONT MODE
Approx. 10 kΩ
Twist
–
Gm
Gm
0S
External voltage Ein
0 V 10 V
: Rated conductance (S)
Conductance
See