User manual

61
Instruction Manual
PSI 8000 3U HS PV Series
EN
Date: 10-28-2011
Using the power supply
Overcurrent supervision
I> Default: I
Nom
= { I<… I
nom
}
Ti> Default: 100ms
= { 0…99:59h}
The overcurrent error is signalised after the response time
Ti>, if the actual value of the current falls below the adjusted
overcurrent limit. The error notication vanishes if the actual
current has exceeded the threshold again for the time Ti>.
This overcurrent error is suppressed for T
0
= 100ms after the
output was switched on.
 I> Alarm: Overcurrent
This error shuts down the power output. An alarm has to be ack-
nowledged, before the power output can be switched on again.
 I> Warning: Overcurrent
The error is notied and remains until it is acknowledged and
not persistent anymore.
 I> Signal: Overcurrent
The analogue interface (IF-A1, optional) can signalise an
overcurrent or undercurrent at one of the digital outputs.
7.6.3 Step response supervision
Step response +
The menu page Step response lets you congure the
supervision circuits for the dynamic and static comparison of
actual value and set value.
Step response Default: Us→Uo
Us→Uo Supervision of the deviance between set
value and actual value of voltage
Is→Io Supervision of the deviance between set
value and actual value of current
Supervise Default: NO
NO Supervision is inactive
Signal Supervision reports a signal
Warning Supervision reports a warning
Alarm Supervision reports a alarm
 dyn. ∆ Default: 10% I
nom
resp. U
nom
= ± {0...1,1*U
nom
} Allowed tolerance for the voltage
= ± {0...I
nom
} Allowed tolerance for the current
Note: The settling process of the power supply is determined by
the load. After a set value has changed, a certain time elapses
until the desired value is put to the power output. For instance,
it can last some seconds for the voltage to go down from 100%
to 0V at no or small load, because the output capacitors need
a time to discharge.
Supervision of a step response
The adjusted set value is compared with the measured actual
value. If there is a difference between them and this difference
is greater than the tolerance, the supervision will initiate an error
after the settling time Tsr. See gure below.
rise time
Tsr = {0…99:59h} Default: 100ms
fall time
Tsf = {0…99:59h} Default: 2s