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A M P 1 I N T E G R AT E D P O W E R A N D E N E R G Y I N S TA L L AT I O N I N S T R U C T I O N S
AMP1
Analog_value objects
Use the Present_Value property of the Analog_Value object for
all writable variables in the meter other than those used
specifically for BACnet configuration or Time Synchronization
(in the Device Object) or Data Logging (in the Trend_Log
objects).
Values are checked when written, and errors are returned for
invalid entries. This table describes how the meter uses those
variables, what values are valid, and what their defaults are.
When writing values to the Present_Value properties of
Analog_Value BACnet objects, there is a delay of up to about
No.
Name
Description
AV1
Config
Configuration R/W –
System_
AV2
System Type
Type
CT_Ratio_
CT Ratio -
AV3
Primary
Primary
CT_Ratio_
CT Ratio -
AV4
Secondary
Secondary
AV5
PT_Ratio
PT Ratio
System_
System
AV6
Voltage
Voltage
Display_
AV7
Display Units
Units
Phase_Loss_
Phase Loss
AV8
Voltage_
Voltage
Threshold
Threshold
Phase_ Loss_
Phase Loss
AV9
Imbalance_
Imbalance
Threshold
Threshold
Number of
Subintervals
AV10 Subintervals
Per Demand
Interval
Subinterval_
Subinterval
AV11
Length
Length
For troubleshooting or service related questions, contact ABB at 800-782-8061 or at epis.component.support@abb.com
R/W NV
Units
Range
n/a
n/a
40, 31, 12, 11,
R/W NV
n/a
10
R/W NV
Amps
5-32000
R/W NV
1/Volts
1,3
R/W NV
Value
0.01 - 320.0
from 82 (times
the PT_Ratio in
AV5) to 660
R/W NV
Volts
(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
hundreths
R/W NV
of a
0, 10-32767
second
two seconds to validate and store the new value. An
immediate read of the same property before that delay has
elapsed can return the prior value (even if the new value was
accepted). To read a value immediately after writing it, check
the Reliability property first. When it reports a No_Fault_
Detected status, the Present_Value of the object is current.
These objects support the Description and Reliability object
properties and all required Analog_Value object properties,
but Present_Value is the only writable property.
Factory
Default
Value
Additional information
Command Register:
– Write 30078 (0x757E) to clear all energy accumulators to 0 (All).
– Write 21211 (0x52DB) to begin new Demand Sub-Interval
Always
calculation cycle and log another data value on Trend_Log objects
returns
TL1-TL3 (when the meter is in Manual "Sync-to Comms" mode). This
"0"
takes effect at the end of the next 1 second calculation cycle. Write
when
no more frequently than every 10 seconds.
read
– Write 21212 (0x52DC) to reset Max Demand values to Present
Demand Values. Takes effect at the end of the next 1 second
calculation cycle. Write no more frequently than every 10 seconds.
– Write 16498 (0x4072) to clear pulse counters to 0.
System_Type:
– Write 10 for Single-Phase: A + N
– Write 11 for Single-Phase: A + B
40
– Write 12 for Split-Phase: A + B + N
– Write 31 for 3-Phase Á: A + B + C, no N
– Write 40 for 3-Phase Y: A + B + C + N
Current Transducer Size – Primary Current Range
200
(Default is set for 100 A CTs)
Current Transducer Type – Secondary Interface
3
– Enter 1 for CTs with 1V outputs (Default)
– Enter 3 for CTs with 1/3V outputs
Potential Transformer Ratio – The default is 1.00 (1:1), which is no PT
1
attached. Set this value before setting the System Voltage (below).
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
480
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.
Display Units: 0 = IEC (U, V, P, Q, S), 1 = IEEE (default: VLL, VLN, W, VAR,
1
VA)
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
10
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.
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 Á
25
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.
Number of Sub-Intervals per Demand Interval. Sets the number of sub-
intervals that make a single demand interval. For block demand, set this
1
to 1. Default is 1. When Sub-Interval Length (in object AV11) is set to 0
(sync-tocomms mode), the meter ignores this value.
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
90000
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.
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