Reference Manual
BLR-CM/BLR-CM3phase
Rev. 08
2018-09
13
2.4.6 CONTROL ON / FREEZE / OFF
ON:
Automatic control is running
FREEZE:
Automatic control is stopped; status of exit relays is frozen
OFF:
Automatic control is stopped; all exit relays are off
2.4.7 cos
φ1
This is the setting for target
2.4.8 SWITCH INTERVAL
The switch interval is the time delay between switching steps in regulation.
The switch interval has two different functions:
Protecting the contactors by reducing the number of switching cycles.
Building of the average of the reactive power in the time of the switch interval.
Step recognition is automatically set OFF, when switch interval is off. In regulation mode LIFO, minimum
switching interval is 1 sec longer, as the longest discharging time. In HV-version, the minimum switching time
delay is 8.7 sec.
2.4.9 STEPS
2.4.9.1
STEP TYPE
For every single step its function can be defined separatly. You can select between the following functions:
NORMAL = step is used for normal regulation algorithm
OFF = step is permanently switched of an blend out in step indication
FIX-OFF = step is permanently switched off
FIX-ON = step is permanently switched on (step is supervised and also switched off in critical situations)
The step type "Fast" in only available for BLR-CM with transistor exits. Steps, which are set "Fast" (only
possible for transistor exits) are not available for the normal regulation algorithm. For each "Fast" step a
nominal value has to be set, because the automatic step size detection is disabled in real time algorithm.
FAST = step is used for the real time algorithm. All needed steps to reach the target cosφ are switched
simultaneously. There is no delay for switching.
Not used output steps have to be set to "FIX-OFF" or "OFF". So it is ensured, that these steps are not used
for the regulation anymore. No needless alarms are caused! Fix steps are labelled by the permanent symbol
"!" next to the step number! Steps there are set "OFF" are blend out.
!
!
