Commissioning Instructions
Rev. 03
Power Factor regulator BLR-CM
Page 2 of 4
Attention: The present manual is for the first commissioning. For further explanations and more possible settings, please
check the reference manual.
For ease of use and adjustment the BLR-CM user interface consists of a combination of graphical LCD display and 4 soft-press-keys.
The following flow chart shows step by step how to commission the BLR-CM. The steps below should be followed by pressing the high-
lighted soft-press-keys on the BLR-CM.
Standard version of BLR-CM is supporting English, German and French.
Function of the setting of nominal voltage is to make a definition about the nominal
voltage of the system. The threshold levels for under- and overvoltage are based on this
as well as the ratings of the capacitor sizes in step database, which are used for control
and monitoring. The capacitor sizes, which are stored in step database, are also r
the nominal voltage.
Independent of connection of the voltage measuring channel, nominal voltage is
always the phase-phase voltage!
The CT FACTOR is the ratio of current transformer. (e. g. 1000/5 = ratio 200).
For current measuring a CT always have to be used!
VT FACTOR is the ratio of the voltage transformer. If the regulator is connected directly
to the measurement voltage without VT the value 1 has to be used
Automatic initialization is switching all exits. During this test it can get information,
which exits are working and it can correct the connection of the measuring channels for
voltage and current by internal settings.
Automatic initialization can be started only when the “happy face” is shown (voltage
and current are ok) and when CONTROL is not set to status OFF or FREEZE manually or by alarm-system. If
CONTROL setting is FREEZE done by AI, then a restart is possible.
When AI is running, the status line of BLR-CM shows the message: “AI ACTIVE”. The maximum number of
switching operations during AI is 10 per exit (normally between 2 and 5). AI is taking care about the setting of
discharge time for each exit. If there is a very long discharge time necessary, AI will take a certain time.
The following messages from AI are possible:
ALARM: AI OK
AI is finished completely. Please check if all used exits are shown with their number in the display and please
check if BLR-CM is working correctly.
ALARM: STEPS (CONTROL setting is: FREEZE)
Capacitors cannot be detected, because they are not controlled by controller or the rating is smaller as limit.
AI ABORTED (CONTROL setting is: FREEZE)
AI couldn’t be finished. The reason could be permanent load variation during AI. Please try it again or do the
settings manually.
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
This is the setting for target COS PHI1. It will be valid during normal operation
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.
Building of the average of the reactive power in th
e time of the switch inte
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