Veris Industries E50H2A Installation Manual page 22

Installation Guide
Power Monitoring
E50H2A, E50H5A
BACnet Programming Information (cont.)
# Name Description R/W
AV6 System_ System
Voltage Voltage
AV7 Display_ Display Units
Units
AV8 Phase_Loss_ Phase Loss
Voltage_ Voltage
Threshold Threshold
AV9 Phase_Loss_ Phase Loss
Imbalance_ Imbalance
Threshold Threshold
AV10 Subintervals Number
Subintervals
Per Demand
Interval
AV11 Subinterval_ Subinterval
Length Length
ZL0117-0D Page 22 of 28
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NV Units Range
R/W NV Volts from 82 (times
the PT_Ratio
in AV5) to
660 (times
the PT_Ratio
in AV5 -
absolute
limits are
82-32000)
R/W NV n/a 0,1
R/W NV Percent 1-99
R/W NV Percent 1-99
R/W NV 1-6
R/W NV hundreths 0,
of a 10-32767
second
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Factory
Default
Value
600 System Voltage – This voltage is Line to Line unless in System Type 10 (in object AV2), in
which case it is Line to Neutral. This value is used to by the meter to calculate the full
scale power for the analog outputs and pulse configuration (see below), and as full
scale for phase loss (in object AV8). Do not set the meter to voltages outside the range
of 82-660 volts times the PT Ratio in object AV5.
1 Display Units: 0 = IEC (U, V, P, Q, S), 1 = IEEE (default: VLL, VLN, W, VAR, VA)
10 Phase Loss Voltage Threshold in percent of System Voltage (in object AV6). Default is
10 (10%). Any phase (as configured in AV2) whose level drops below this threshold
triggers a Phase Loss alert - i.e. if the System voltage is set to 480 V L-L, the L-N
voltage for each phase should be 277 V. When the threshold is set to 10%, if any phase
drops more than 10% below 277 V, (less than 249 V), or if any L-L voltage drops more
than 10% below 480 V (less than 432 V) the corresponding phase loss alarm bit will
be true.
25 Phase Loss Imbalance Threshold in Percent. Default is 25% phase to phase difference.
For a 3-phase Y (3 + N) system type (40 in object AV2), both Line to Neutral and Line
to Line voltages are tested. In a 3-phase ∆ System type (31 in object AV2), only Line to
Line voltages are examined. In a single split-phase (2 + N) system type (12 in object
AV2), only the line to neutral voltage are compared.
1 Number of Sub-Intervals per Demand Interval. Sets the number of sub-intervals that
make a single demand interval. For block demand, set this to 1. Default is 1. When
Sub-Interval Length (in object AV11) is set to 0 (sync-to-comms mode), the meter
ignores this value.
90000 Sub-Interval Length in hundredths of a second. For sync-to-comms mode, which allows
manual triggerring of demand intervals and the logging of another Trend_Log record,
set this value to 0 and write 21211 to the reset register (object AV1) each time the
sub-interval must be externally reset. Default is 90000 (15 minutes). This variable is
tied directly to the Log_Interval property of all three Trend_Log objects (their value
is always the same as this one). Changing any of these four properties changes all of
them.
Trend_Log values are only used on the E50H5A model.
Additional information
TM
08131