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Technical Documentation
Rev. 01
Power Factor Regulator
BLR-Q(U)
Page 17 of 39
2.4.21.11 CT TYPE 1A
This setting changes some internal threshold levels, to optimize the function with 1Amp CTs.
2.4.22 STEPS
Settings concerning the step data base can be found in this submenu. The following settings are possible:
2.4.22.1 DISCHARGE TIME
For every single capacitor step an own discharging time can be defined. The discharging time is a blocking
time, becoming active after switching off a step. As long as this time is running (display of "
!
" in the step indi-
cation) this step is not available for the regulation. Discharging time should be adapted to the capacitor dis-
charging unit.
For step exits, which are switching thyristor switches, discharging time can be reduced to the zero.
2.4.22.2 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-Q(U) 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
cos
ϕ
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.
2.4.22.3 SWITCH CYCLES
The number of switch cycles can be corrected or reset for ech step separately.
!