Press 
Press
OV | 30 | Program the OVP to 30 volts, which is less than the output voltage. |
0.000 |
| OVP voltage entered is less than the output voltage. This causes the |
| ||
|
| OVP circuit to trip. The output drops to zero, CV turns off, and Prot |
|
| turns on. |
|
|
|
Press 
Press 
Press 
OV - - - - -
0.000
Shows that the power supply shuts down because the OVP circuit has tripped.
Return display to meter mode (optional step).
Program the OVP to 45 volts, which is greater than the output voltage. Note: You cannot clear an OVP trip until you have first removed the cause of the condition.
Press Prot Clear
(
)*
40.00 | The OVP circuit is cleared, restoring the output. Prot turns off and |
| CV turns on. |
|
|
* | is the unlabeled blue key. |
|
|
Checking the Current Function
The tests in Table
Table
Procedure
Display
Explanation
Turn off the power supply and connect a #14 AWG or larger wire across the output (+) and
Turn on the unit.
Press 
Press 
Press 
Press 
several times
Press 
the same number of times
Meter mode
VOLT 80.00
CURR 1.000
1.000
Essentially zero output with Dis annunciator on.
Program output to 80 volts.
Program output to 1 ampere.
Dis annunciator turns off, CC annunciator turns on, and AMPS display shows the programmed current.
*Current decreases several milliamperes each time you press the key.
*Current increases several milliamperes each time you press the key.
Rotate the Current control counterclockwise and then clockwise
Press 
*The number of milliamperes is determined by the current programming resolution of the power supply (see "Supplemental Characteristics" in Chapter 1).
Control operates similarly to the 
and 
keys. The control is rate sensitive. Turning it more quickly causes a more rapid change in current.
You have enabled the overcurrent protection circuit. The circuit then tripped because of the output short. The CC annunciator turns off and the OCP and Prot annunciators come on. Output current is near zero.
