Chapter 3 Front-Panel Operation
Programming Overvoltage Protection
31
3
5 Exit the OVP menu.
The “CHANGED” message is highlighted for a second to show that the new OVP
trip level is now in effect. If the OVP settings are not changed, “NO CHANGE” will
be displayed. The power supply will exit the OVP menu and the display will return
to the meter mode. Check that the
OVP annunciator turns on.
Checking OVP Operation
To check OVP operation, raise the output voltage to near the trip point. Then very
gradually increase the output by turning the knob until the OVP circuit trips. This will
cause the power supply output to drop to near zero, the
OVP annunciator to blink, and
the
CC annunciator to turn on. The “OVP TRIPPED” message also appears on the
display.
Clearing the Overvoltage Condition
When the OVP condition occurs (the “OVP TRIPPED” message is shown on the
display), the OVP annunciator blinks. When it was caused by an external voltage
source such as a battery, disconnect it first. Clear the overvoltage condition by
adjusting output voltage level or by adjusting OVP trip level.
The following steps show how to clear the overvoltage condition and get back to
normal mode operation. In the following steps, the display will go back to “OVP
TRIPPED” if you let the display time out after about several seconds.
• Adjust output voltage level
1 Lower the output voltage level.
Lower the output voltage level below the OVP trip point after pressing key.
The OVP and Limit annunciators are blinking.
2 Move to the clear mode.
Press key twice to move to the OVP CLEAR mode. The “OVP ON” message
appears on the display. Turn the knob to the right until the above message appears on
the display.
CHANGED
OVP CLEAR
To Next Page
Loading...
Need help?
General
