ABB REB650, Technical Manual

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Comparator
V<BattVoltLowLim
Comparator
U<BattVoltHiLim
V_BATT
PU_VLOW
PU_VHI
AL_VLOW
AL_VHI
ANSI11000292-1-en.vsd
0-tReset
0
0
0-tDelay
0-tReset
0
0
0-tDelay
ANSI11000292 V1 EN
Figure 124: Functional module diagram
The battery rated voltage is set with the RtdBattVolt setting. The value of the
BattVoltLowLim and BattVoltHiLim settings are given in relative per unit to the
RtdBattVolt setting.
It is possible to block the function outputs by the
BLOCK
input.
Low level detector
The level detector compares the battery voltage
V_BATT
with the set value of the
BattVoltLowLim setting. If the value of the
V_BATT
input drops below the set value of
the BattVoltLowLim setting, the pickup signal
PU_VLOW
is activated.
The measured voltage between the battery terminals
V_BATT
is available through the
Monitored data view.
High level detector
The level detector compares the battery voltage
V_BATT
with the set value of the
BattVoltHiLim setting. If the value of the
V_BATT
input exceeds the set value of the
BattVoltHiLim setting, the pickup signal
PU_VHI
is activated.
Time delay
When the operate timer has reached the value set by the tDelay setting, the
AL_VLOW
and
AL_VHI
outputs are activated. If the voltage returns to the normal value before the
module operates, the reset timer is activated. If the reset timer reaches the value set by
tReset , the operate timer resets and the
PU_VLOW
and
AL_VHI
outputs are deactivated.
1MRK 505 277-UUS C
Section 12
Monitoring
311
Technical Manual