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E51C2A, E51C3A Installation Guide
Modbus Point Map (cont.)
R/W NV Format
•
• 142
R/W NV
UInt
•
• 143
R/W NV
UInt
•
• 144
R/W NV
UInt
•
• 145
R
NV
UInt
•
• 146
R
UInt
ZL0122-0D
Page 24 of 34
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Units Scale
Range
Phase Loss Voltage Threshold in percent of system voltage (register
%
1-99
Phase Loss Imbalance Threshold in Percent. Default is 25% phase
%
1-99
Wh (& VARh, if equipped)
10000,
1000,
Wh
100,
10
Pulse Contact Closure Duration
500,
250,
100,
msec
50,
25,
10
Error Bitmap. 1 = Active:
Bit 0: Phase A Voltage out of range
Bit 1: Phase B Voltage out of range
Bit 2: Phase C Voltage out of range
Bit 3: Phase A Current out of range
Bit 4: Phase B Current out of range
Bit 5: Phase C Current out of range
Bit 6: Frequency out of the range of 45 to 65 Hz -OR- insufficient voltage to determine frequency.
Bit 7: Reserved for future use
Bit 8: Phase Loss A
Bit 9: Phase Loss B
Bit 10: Phase Loss C
Bit 11: Low Power Factor on A with one or more phases having a PF less than 0.5 due to mis-wiring of phases
Bit 12: Low Power Factor on B
Bit 13: Low Power Factor on C
Bit 14: Energy pulse output overrun error. The pulse outputs are unable to keep up with the total real power
Bit 15: Energy pulse output configuration error (present pulse energy setting may not keep up with the
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134). Default value is 10 (%). Any phase (as configured in register
130) 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 in register 146 will
be true.
to phase difference. For a 3-phase Y (3 + N) system type (40 in
register 130), both Line to Neutral and Line to Line voltages are
tested. In a 3-phase Δ System type (31 in register 130), only Line
to Line voltages are examined. In a single split-phase (2 + N)
system type (12 in register 130), just the line to neutral voltage
are compared.
Energy per Pulse Output
Contact Closure. If the meter
cannot find a pulse duration
that will keep up with the
max. system power (register
135), it will reject the new
value. Check the meter
kWh (& VARh, if equipped) Pulse Contacts
configuration and/or try a
larger value.
Note: The kWh pulse contact can keep up with a maximum power (Watts) of
in msec. Read-only. Set to
1800000 x Wh pulse weight ÷ contact closure duration (in msec)
the slowest duration that will
keep up with the theoretical
max. system power (register
135). The open time ≥ the
closure time, so the max.
pulse rate (pulses per sec)
is the inverse of double the
pulse time.
(registers 3 and 261/262). To fix, increase the pulse energy register (register 144) and reset the energy
accumulators (see reset register 129).
theoretical max. system power; see register 135). To fix, increase the pulse energy (register 144).
Description
Phase Loss Output
Note: The phases tested are determined
by the System Type.
TM
0818
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