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V7.00
24905_EDEBD
A0272-5019-1_EN
25
Function with too low power consumption:
Settings:
The settings can be changed in the menu Extra => Settings => System =>
Parameters => Limits => Lim-U => Lim +Ie
Possible settings:
Permissible limit violation between 0% and 90% of rated current
Monitoring of limit violation active or off
Action in case of an error:
Alarm relay switches
No action, just a message via the display and KBR eBus
In case of an error, there is only a message,
no stages are switched off.
4.4
Temperature monitoring of stages
The overtemperature stage switching behavior
is as follows:
1.) Reducing the cabinet temperature when the alarm
threshold is exceeded (prerequisite: min. 2 cabinets)
When the alarm temperature is exceeded and a dwell time of
3 minutes has elapsed, the device tries to replace the stage with an equivalent stage
(same stage power, detuning and type (thyro/contactor)) from a cabinet with lower
temperature. After a dwell time of another 3 minutes, the device tries to replace the next
stage.
If the cabinet temperature falls under the alarm temperature (not yet below hysteresis
limit), no further stage is replaced. (the hysteresis is not working!)
2.) Temperature as selection criterion when switching stages on or off
If the alarm temperature has been exceeded in a cabinet, the temperature is used as a
criterion for selecting the stage to be switched.
If several stages with the same stage power and detuning factor are available, the stage
with the higher cabinet temperature is preferred for switching off.
For
switching on
, the stage with the lowest cabinet temperature is preferred.
The temperature is only used as a selection criterion if the alarm temperature is exceeded,
as otherwise the stage "circular switching" does not work anymore.
3.) Emergency shut-down
If the switch-off temperature is exceeded, only one stage is switched off at first. The next
stage is not switched off until a dwell time of 2 minutes has elapsed.
If the temperature falls below the switch-off temperature (not yet below hysteresis), no
Range of functions