Release 3.1
57
Section 3. Local Operation
Introduction
Once you have installed the power supply and have connected both the AC input
power and the load as covered in Section 2. Installation, the power supply is ready
to operate in local control mode (that is, operation at the unit’s front panel).
•
See “Standard Operation” on page 57
for a brief explanation of Constant Voltage
and Constant Current Mode operation.
•
See “Using Over Voltage Protection (OVP)” on page 61 to “Over Temperature
Protection (OTP)” on page 70 for more about power supply functions such as
OVP, shutdown function, OTP, and using multiple supplies.
•
See “User Diagnostics” on page 71
for troubleshooting information for the
operator.
•
Turn to Section 4. Remote Operation for descriptions of remote programming
options and remote monitoring of the power supply.
Standard Operation
This power supply has two basic operating modes: Constant Voltage Mode and
Constant 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
Whether controlled by local or remote programming, the power supply has two basic
operating modes: Constant Voltage Mode and Constant Current Mode. 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.
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