User Manual

65
Instruction Manual
PSI 8000 3U Series
EN
Date: 03-22-2011
Using the power supply
Sounds
Key sound Default: NO
= YES A short beep signalises a button press
= NO No signal if keys are pressed
Alarm sound Default: YES
= YES If an alarm or warning occurs an acoustic signal is
emitted (beep) in short intervals
= NO No acoustic signal for alarms/warnings
7.5 Conguring the graphic display
Display +
The menu page Display lets you congure all parameters
related to the graphic display.
Backlight Default: YES
= YES The backlight is permanently on
= delay 60s The backlight will be switched off with
a delay of 60s after a button or a rotary
knob has been used the last time
Contrast Default: 80%
= { 70%...90% }
The contrast can be adjusted to suit the needs of the location
where the unit is installed and for a clearer view at the values.
7.6 Supervision
Supervision +
The Supervision menu lets you congure the supervision of
output voltage, output current and output power. You can also
supervise a step function. The menu Supervision leads
you to following menu selection:
U thresholds
I thresholds
Step response
7.6.1 Voltage supervision
U thresholds +
The menu pageU thresholds lets you congure the over-
voltage threshold OVP) as well as the supervision circuits for
over- and undervoltage.
Overvoltage protection (OVP)
U ovp Default: 1,1*U
nom
= {U>… 1,1*U
nom
}
The overvoltage protection is intended to protect the power sup-
ply output. But you can also, in order to protect the load, adjust
it to the maximum allowed voltage of your load. The output is
instantly shut down if this threshold is reached.
Example: an 80V unit can be adjusted up to 88V for U
ovp
 OV It is displayed as an alarm. (See also „6.13.
Alarms, warnings and signals“)
Overvoltage supervision
U> Default: U
Nom
= { U<… U
ovp
}