Reference Manual
BLR-CX-R / BLR-CX-T
This is the setting for target cosφ2. It will be valid when a switch over
is caused by the digital input or another programmable action.
"YES" the controller operates in P-export with the COS φ 2 as control
target.
"NO" the controller operates in P-export with the COS φ 1.
The switch interval is the time delay between switching steps in
regulation.
The switch interval has two different functions:
1. Protecting the contactors by reducing the number of
switching cycles.
2. Building of the average of the reactive power in the time
of the switch interval.
SWITCH INTERVAL STEP EXCHANGE
For step exchange, a separate switch interval is used. This is the
delay-time between switching-off an active step and switching-in the
next step to get a better power-factor.
"YES" = Step exchange is active.
"NO" = Step exchange is disabled.
Step exchange is supporting automatic control and combined filter
control algorithm to reach an optimum result. If the controller
detects that target-pf is not reached it starts searching for a step
which gives better results. If step exchange is active, the controller
can replace a switched-in step against a step which matches better,
to reach the target.
This function helps to reach target COS φ more exactly, when
capacitors have different sizes. If all capacitor banks have the same
size, this function makes no sense.
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