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Viewing status information Using the front panel
Foldback
symbol
Meaning of symbol
No foldback … the power module’s behavior changes from a
voltage source to a current source depending on the
connected load (constant voltage or constant current).
Linear foldback ... when the current limit is reached, the power
module’s output voltage decreases (down to 0) as does
the output current (down to 30% of the current SET
value, at short circuit).
Non-linear foldback … when the current limit is reached, the
power module’s output voltage decreases (down to
70% of the voltage SET value) while the output current
stays constant. Beyond that point, the output current
decreases as well (down to 30% of the current SET
value, at short circuit).
Retry …… when the current limit is
reached, the Power Module
shuts-down it’s output for a period of 3 seconds. Then, the
output is restored for 1 second. If the current limit is still
valid the cycle repeats itself. Up to 5 consecutive retries are
performed until the Power Module declares an error
condition and its output stays shut.
Shutdown … when the current limit is reached the power module
shuts down and a fault is generated.
Detailed module status
The detailed module status is divided into three levels of severity: information,
warnings and faults. The display will show status information for the highest
severity, hiding information relating to lower severity.
The following table summarizes the displayed detailed module status, according to
its degree of severity:
Severity Displayed data Description
Blank display – nothing to show
NOT CALIBRATED
You should never see this
DISCONNECTED
Output disconnect relay is open
* ARMED *
The module is armed, waiting for trigger
Information
RIPL lv frq
Simulated output ripple is active with:
Level.........lv = LO or HI
Frequency .frq = 50 or 60 or 100 or 120
or 400 or 800 or 2 KHz
34 XMP 2600 User’s Guide rev. 1.0