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Release A 35
Section 3. Local Operation
Introduction
Once you have installed the power supply, it is ready to operate in local control mode
(that is, operation at the unit’s front panel).
• See “Standard Operation” for a brief explanation of Constant Voltage and
Constant Current Mode operation.
• See “Using Over Voltage Protection (OVP)” on page 38, “Using the Shutdown
Function” on page 39, and “Using Multiple Supplies” on page 40 for information
on these topics.
• See “User Diagnostics” on page 45, for troubleshooting information for the
operator.
•Turn to Section 4. Remote Operation for descriptions of remote programming
options and remote monitoring of the supply.
Standard Operation
This power supply has two basic operating modes: Constant Voltage Mode and
Current Mode, and two control modes: Local Control Mode (default setting) and
Remote Programming Mode. Both operating modes are available regardless of
which control mode is used.
Operating
Modes and
Automatic
Crossover
The mode in which the power supply operates at any given time depends on the
combination of:
• output voltage setting V
SET
• output current limit setting I
SET
• resistance of the attached load R
L
See Figure 3.1 for a graphical representation of the relationships between these
variables.