Maxim Integrated 71M6534 Energy Meter IC Family Software - Manual (Page 71)

71M653X Software User’s Guide
Vmax
Scaling Maximum
Volts for PCB
0.1V
6000
600.0V, from the PCB’s
design.
)9 unsigned 16
ImaxA
Scaling Maximum
Volts for PCB element
A
0.1A
2080
208.0A, from the PCB’s
design.
)A unsigned 16
ppmc1
ADC linear adjust with
temperature parts per million per degree
centigrade
0
temp_nom, )14, must
be set to a real value
from ]7B before this
can work.
Then it should become
-150
)B signed 16
ppmc2
ADC quadratic adjust
with temperature parts per million per degree
centigrade squared
0
Should become
-392 after setting
temp_nom
)C signed 16
Pulse 3
source Source for software
pulse output 3**
Indexed as )7
0
wsum; requires
software pulse module.
)D unsigned 8
Pulse 4
source Source for software
pulse output 4**
Indexed as )7
4
varsum;
requires software pulse
module.
)E unsigned 8
Scal
Accumulation intervals
of autocalibration** Count of accumulation
intervals of calibration.
2
2 accumulation
intervals covers both
chop polarities.
)F unsigned 16
Vcal
Volts of
autocalibration**
0.1V rms of AC signal applied
to all elements during
calibration.
2400
240V is a standard full-
scale set-up for meter
test.
)10 unsigned 16
Ical
Amps of
autocalibration**
0.1A rms of AC signal applied
to all elements during
calibration. Power factor must
be 1. 300
30A is a standard full-
scale set-up for meter
test.
)11 unsigned 16
VThrshld
Volts at which to
measure frequency,
zero crossing, etc.
sqrt(v0sqsum)*2 16
88992958 (6531)
75087832 (6533 &
6534)
40V
A real meter should use
sag, but the demo
operates with a power
supply.
)12 unsigned 16
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