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Technical Documentation
Rev. 01
Power Factor Regulator
BLR-Q(U)
Page 26 of 39
2.4.25 ALARM
In the following chapter all adjustable Alarms including trigger are listed.
Control alarm
Trigger
after 50x switching time not reaching the target cos
ϕ
and
∆
Q > smallest step
(over-/under compensation)
No current
Trigger:
I < 15mA
Reaction:
switch off steps to reach current flow or freeze (2.4.23.12)
Step fault
Trigger:
step size detection not possible
Reaction:
alarm after three not successful trials in series (alarm delay 300 sec)
Step warning
Trigger:
a) Stepsize falls below an adjustable level (delay 300 sec). This level is
percentage between stepsize and nominal stepsize in step-database
b) switch cycles exceeding the adjustable limit for switch cycles.
COS PHI
Trigger:
The actual cos
ϕ
is outside the adjustable range between
c0.80 and i0.80. The delay time can be adjusted from 1s to 36000s.
Harmonics U
Trigger:
THD U exceeds the adjusted limit between 1% and 99.9%.
Harmonics I
Trigger:
THD I exceeds the adjusted limit between 1% and 99.9%.
Overload P
Trigger:
amount of P exceeds the adjustable limit between 1kW and 99.9MW
Overload Q
Trigger:
amount of Q exceeds the adjustable limit between 1kvar and 99.9Mvar
P-export
Trigger:
alarm will be triggered as soon as kW export is recognized
Temp1 / Temp2:
Trigger:
ambient temperature exceeds the adjusted limit.
Over current:
Trigger:
I > 6Amps
It's not possible to deactivate this alarm.
BLR-Q(U) always generates a signal
via the display and alarmrelay.
Frequency alarm:
Trigger:
frequency is out of allowed range (max. range 45 – 65Hz, delay 10sec).
Over/Undervoltage:
Trigger:
Voltage is out of range. The limits depend on setting for nominal voltage
and on tolerance settings (0/ 2.4.21.8).
It's not possible to deactivate this alarm, but a bigger tolerance can be set!
In case of this alarm, the control stops, all steps are disconnected, the alarmrelay
gives signal and the “sad face” is shown.