31
© 2011 Schneider Electric All Rights Reserved.
ZL0093-0A
11/2011
EM3555
Modbus Point Map
REGISTER
R/W
NV
Format
Units
Scale
Range
Description
142 R/W NV UInt % 1-99
Phase Loss Voltage Threshold in percent of system
voltage (register 134). Default value is 10 (%). Any
phase (as congured 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.
Phase Loss Output
Note: The phases tested are determined by the
system type.
143 R/W NV UInt % 1-99
Phase Loss Imbalance Threshold in Percent. Default
is 25% phase to phase difference. For a 3-phase Y (3
+ N) system type (40 in register 130), both line-to-neu-
tral and line-to-line voltages are tested. In a 3-phase
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.
144 R/W NV UInt Wh
10000,
1000,
100,
10
Wh (& VARh, if equipped)
Energy per Pulse Output
Contact Closure. If the meter
cannot nd a pulse duration
that will keep up with the
max. system power (register
135), it will reject the new
value. Check the meter
conguration and/or try a
larger value.
kWh (& VARh, if equipped) Pulse Contacts
Note: The kWh pulse contact can keep up with a maximum power (Watts)
of 1800000 x Wh pulse weight ÷ contact closure duration (in msec).
145 R NV UInt msec
500,
250,
100,
50,
25,
10
Pulse Contact Closure
Duration in msec. Read-only.
Set to 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.
146 R UInt
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- insufcient 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 (registers 3 and 261/262). To x, increase the pulse energy register (register 144) and reset the
energy accumulators (see reset register 129).
Bit 15: Energy pulse output conguration error (present pulse energy setting may not keep up with the
theoretical max. system power; see register 135). To x, increase the pulse energy (register 144).
147 R NV UInt 0-32767 Count of Energy Accumulator resets
148 R UInt Reserved (returns 0)
