EXTERNAL CONTROL
169
The input impedance for external voltage control is
10kΩ.
Use a stable voltage supply for the external voltage
control.
When using external voltage control, make sure no
more than ±11V is applied across pins 1 and 3.
Exceeding this voltage could damage the PEL-
3000(H). Exceeding 11.8V will cause an EXT.OV alarm
message to appear which also will reset the voltage
output to 0V until the external voltage is reduced back
down below 11.8V.
Use caution when using pin 3. Pin 3 is directly coupled
to the negative input terminal.
External Voltage Control – Operation
External voltage control can be used to control the
current, voltage, resistance and power for CC, CR,
CV, CP and Cx+CV modes. Configuration for each
operating mode is the same.
Input current = rated current × (external
voltage/10)
Input
Current
External
Voltage
Rated
Current
0V 10V
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