Veris Industries E50H5A Install - Manual (Page 26)

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Installation Guide
Power Monitoring
E50H2A, E50H5A
TM
BACnet Programming Information (cont.)
# Name Description R/W Range Additional information
BI8 Reserved_BI8 Reserved R 0=INACTIVE, 1=ACTIVE Returns “INACTIVE”
BI9 Phase_Loss_A Phase Loss Phase A R 0=INACTIVE, 1=ACTIVE Phase Loss - Phase A voltage dropped below the Phase Loss Threshold set by
user
BI10 Phase_Loss_B Phase Loss Phase B R 0=INACTIVE, 1=ACTIVE Phase Loss - Phase B voltage dropped below the Phase Loss Threshold set by
user
BI11 Phase_Loss_C Phase Loss Phase C R 0=INACTIVE, 1=ACTIVE Phase Loss - Phase C voltage dropped below the Phase Loss Threshold set by
user
BI12 Power_Factor_A Low Power Factor Phase A R 0=INACTIVE, 1=ACTIVE Phase A Power Factor less than 50% (commonly due to mis-wiring of CTs/PTs
to meter)
BI13 Power_Factor_B Low Power Factor Phase B R 0=INACTIVE, 1=ACTIVE Phase B Power Factor less than 50% (commonly due to mis-wiring of CTs/PTs
to meter)
BI14 Power_Factor_C Low Power Factor Phase C R 0=INACTIVE, 1=ACTIVE Phase C Power Factor less than 50% (commonly due to mis-wiring of CTs/PTs
to meter)
BI15 RTC_Reset
(E50H5 only) RTC Reset R 0=INACTIVE, 1=ACTIVE Real-Time Clock reset. This goes active when the meter is powered after an
interruption (since it does not use a battery backup). It indicates that the
real-time clock has re-initialized to a default setting (00:00:00:00 on Jan
1, 2000) and should not be relied upon. The clock will run, the meter will
operate and even log data (E50H5A only), but the date and time will not be
correct until a Time_Synchronization occurs.
Data Logging (E50H5A only)
The E50H5A includes a data logging feature that records three meter parameters, accessible via BACnet using Trend_Log objects. All three Trend_Log objects utilize shared
data logging resources in the meter, so all three are controlled in unison. All writable properties other than Log_Device_Property_Object are common to all three Trend_Log
obects. Changes to these properties (Log_Enable, Start_Time, Stop_Time, Log_Interval, Stop_When_Full or Record Count) for any one of the objects will be reflected in
the corresponding property of all three objects. The Log_Interval property is also common with the Demand_Subinterval (Present_Value of AV11), since logging records are
updated synchronously with demand calculations.
Default settings cause logging to begin immediately, with 15 minute intervals and no stop time. When full, the buffer wraps and overwrites the oldest data first (unless the
Stop_When_Full property is used).
Configuration:
Use Log_Device_Object_Property to select the meter parameter to log with each object. Set this property to point to Present_Value property of any of the Analog_Input
objects. The default the values for the Log_Device_Object_Property of the three Trend_Log objects are set as follows:
• TL1 = Real Energy Consumption (AI1 Present_Value)
• TL2 = Reactive Energy Consumption (AI27 Present_Value)
• TL3 = Total Real Power Present Demand (AI34 Present_Value)
The Log_Interval (& Demand Subinterval) can be set from 10 seconds to 32767 seconds (values of 1000 to 3276700). The subinterval timer, which determines how often the
meter’s demand accumulators are updated, also triggers writing to the Trend_Log log buffers. Use the Log_Interval property to set the data logging time subinterval, in units
of hundredths of a second (0.01 seconds). The default subinterval is 15 minutes (a value of 90000 in the Log_Interval property). The Buffer_Length is fixed at 5760, so at a 15
minute interval setting, the buffers hold 60 days of data.
Use the Stop_When_Full property to select either Single Shot (Stop_When_Full = TRUE) or Continuous mode (Stop_When_Full = FALSE) for data logging. The default mode
is Continuous. In Single Shot mode, the meter records data only until the buffer is full. Data for this time period is kept, but newer energy information is lost. In Continuous
mode, the meter continues to record energy data as long as the meter is operating. The buffer can only hold 5760 entries at one time, however, so when the number of records
exceeds 5760, the oldest entry is deleted to make room for the newest.
To start data logging with any of the three Trend_Log objects, set the Log_Enable property to TRUE or set the Start_Time and Stop_Time properties appropriately and wait
for logging to commence at Start_Time.
By default, the Record_Count property of the Trend_Log objects is initialized to Zero.