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Installation:
For installation, all valid standards and safety precautions have to be kept!
1) Check that the measurement
and control voltage, supply
frequency and current transformer
rating comply with the ratings
given on the rear of the relay.
2) Mount the relay in the switch panel by
means of two fixing brackets.
3) Connect the protection earth to PE-
connection on metal case.
4) Connect up in accordance with the
wiring diagram.
5) Remove the link of the CT terminals
.
Commissioning:
BLR-CX is preset:
After BLR-CX is powered-on, a countdown of 90 sec is running. After countdown is finished, the
discharging time blockade oft he capacitors is active. During these two delays, no control outputs of
BLR-CX can be active. The countdown can be interrupted by pushing (esc) button, in this case also
the discharging time blockade starts before the regulation starts with the preset parameters.
BLR-CX is not preset:
During the countdown is running, automatic initialisation of BLR-CX can be started by pushing (
)
button. After the discharge blocking time (default 75s), the controller is detecting not used switching
outputs and lock them out. For the case of an faulty connection of the polarity for voltage and current,
the controller detect it and correct it.
After automatic initialisation is finished, BLR-CX starts its control function and is recognizing capacitor
size during standard operation. Settings of c/k values and switching program are not necessary. When
mains conditions are not suitable for automatic initialization, it will be interrupted. BLR-CX is showing
then error code:
“Ai Abrt“. If multiple repeat shows no results, then the setting instructions of reference manual should
be considered. (not scope of delivery).
Display “Auto“: Message “Auto“ shows, that control function is working. When „Auto“ is not
displayed, then control function is stopped. Reasons for this are: manual operation is active, control
function is switched-off, meas. current is less than 15mA, temperature is too high, voltage is out of
range or harmonic level of voltage is too high.
Over- and undervoltage monitoring: BLR-CX is equipped with over- and undervoltage monitoring.
The allowed range of voltage depends on nominal voltage. When nominal voltage is out of range,
message U Alarm is shown. Then the setting of nominal voltage has to be adjusted to local ratings.
Default is ULL 400V
Activation of measuring value display: To enable the display of all possible measurement values
the CT ratio has to be set. Otherwise the measurement menu of the BLR-CX only contains values
which are only depending to the voltage.
