Veris Industries E51H2A Installation Manual page 25

Installation Guide
Power Monitoring
Analog_Input Objects
# Object Description
Name
AI1 KWh_Net Accumulated Real
Energy: Net (Import -
Export)
AI2 KWh_Import Real Energy Import
AI3 KWh_Export Real Energy Export
AI4 KVARh_Q1 Reactive Energy
Quadrant 1
AI5 KVARh_Q2 Reactive Energy
Quadrant 2
AI6 KVARh_Q3 Reactive Energy
Quadrant 3
AI7 KVARh_Q4 Reactive Energy
Quadrant 4
AI8 Net_KVAh Apparent Energy: Net
(Import - Export)
AI9 KVAh_Import Apparent Energy
Import
AI10 KVAh_Export Apparent Energy
Export
AI11 KW_Total Total Instantaneous
Real Power
AI12 KVAR_Total Total Instantaneous
Reactive Power
AI13 KVA_Total Total Instantaneous
Apparent Power
AI14 PF_Total Total Power Factor
AI15 Volts_LL_Avg Voltage, L-L, Average
of Active Phases
AI16 Volts_LN_Avg Voltage, L-N, Average
of Active Phases
AI17 Current Current, Average of
Average Active Phases
AI18 Frequency Frequency
ZL0123-0D Page 25 of 32
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Use the Present_Value property of the Analog_Input objects for all read-only numeric variables in the meter other than those
used specifically for device configuration (in the Device Object) or data logging (in the Trend_Log objects). Only the E51H5A
supports the data logging capability.
These objects support the Description and Reliability object properties and all required Analog_Input object properties. None
of them are writable. The values that are not instantaneous (i.e., Accumulated Energy, Max Demand, Pulse Input Counts) are
non-volatile. They are not updated while control power is inactive, but their past values are retained when power is restored. The
Present_Value of the accumulated data objects (AI1-AI10 and AI31-AI54) use floating-point data types (all AI objects use floating
point data points). The resolution of the accumulated values decreases as the value grows larger over time and more of the
significant digits precede the decimal point. If the size of the value limits the resolution unacceptably, read and store the current
value offline and reset the accumulators to restore finer resolution.
For complete assurance, check the Reliabilty property for a No_Fault_Detected status before reading the Present_Value. If the
line voltage or input frequency of the system being monitored falls out of the supported range, the corresponding alert bits
(BI1-BI7) are set and the reliability property of any values that cannot be accurately measured under those conditions returns
Unreliable_Other.
R/W NV Units
R NV kWh -3.4+E38 - 3.4+E38
R NV kWh 0 - 3.4+E38
R NV kWh 0 - 3.4+E38
R NV kVARh 0 - 3.4+E38
R NV kVARh 0 - 3.4+E38
R NV kVARh 0 - 3.4+E38
R NV kVARh 0 - 3.4+E38
R NV kVAh -3.4+E38 - 3.4+E38
R NV kVAh 0 - 3.4+E38
R NV kVAh 0 - 3.4+E38
R kW 0 - Max_Power (AI76)
R kVAR 0 - Max_Power (AI76)
R kVA 0 - Max_Power (AI76)
R -1.00 - 1.00
R Volts
R Volts
R Amps
R Hz 45.0 - 65.0
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Range
The Units property of object AI4 reports that these units are kWh because there
is no unit type in the BACnet standard for KVARh
The Units property of object AI5 reports that these units are kWh because there
is no unit type in the BACnet standard for kVARh
The Units property of object AI6 reports that these units are kWh because there
is no unit type in the BACnet standard for kVARh
The Units property of object AI7 reports that these units are kWh because there
is no unit type in the BACnet standard for kVAh
The Units property of object AI8 reports that these units are kWh because there
is no unit type in the BACnet standard for kVAh
The Units property of object AI9 reports that these units are kWh because there
is no unit type in the BACnet standard for kVAh
The Units property of object AI10 reports that these units are kWh because there
is no unit type in the BACnet standard for kVAh
Returns QNAN if frequency is out of range (or no voltage input present on Phase
A)
Additional Information
TM
0818