86
PLZ-4WL
Controlling Constant Power Mode (CP Mode) Externally
When you apply an external voltage of 0 V to 10 V to the PLZ-4WL, the power varies in
accordance with the voltage.
An external voltage of 0 V results in a power of 0 W. An external voltage of 10 V results in a
power of 100 % of the specified range.
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.
1
2
J1
+
Ein
Po
Pm×Ein
10
Po: Input
power
Pm: Rated
power
Ein: External
voltage
0 ≤ Ein ≤ 10 V
A COM
EXT CONT MODE
Approx. 10 kΩ
Twist
–
Pm
Pm
Input power
Po
0
W
External voltage Ein
0 V 10 V
: Rated power
See