User manual

49
© 2009, Elektro-Automatik GmbH & Co. KG
EN
Using the power supply
7.6.3 Current supervision
I thresholds +
The menu page I thresholdsletsyoucongurethesupervi-
sion circuits for under- and overcurrent.
Undercurrent supervision
I< Default: 0A
= { 0… I>}
Ti< Default: 100ms
= { 0…99:99h}
The undercurrent error is signalised after the response time
Ti<, if the actual value of the current falls below the ad-justed
undercurrentlimit.The errornoticationvanishes iftheactual
current has exceeded the threshold again for the time Ti<.
This undercurrent error is suppressed for T
0
=100ms after the
power output was switched on.
 I< Alarm: Undercurrent
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: Undercurrent
Theerrorisnotiedandremainsuntilitisacknowledgedandnot
persistent anymore.
I< Signal: Undercurrent
Overcurrent supervision
I> Default: I
Nom
= { I<… I
nom
}
Ti> Default: 100ms
=
{ 0…99:99h}
The overcurrent error is signalised after the response time Ti>,
if the actual value of the current falls below the adjusted over-
current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 over-
current or undercurrent at one of the digital outputs.