Maxim Integrated 71M6534 Energy Meter IC Family Software - Manual (Page 48)

71M653X Software User’s Guide
Feature Code
Size
1
φ
3
φ
Description
Chopping of
VREF 0.06KB Y Y Control of the chopping bit
Temperature
compensation of
VREF 0.1KB Y Y Digital compensation using the GAIN_ADJ input of
the CE, based on linear and quadratic temperature
coefficients
RTC compensa-
tion using mains
frequency 0.2KB N/opt N/opt Optional compensation of RTC by counting cycles on
mains.
Correction does not occur when frequency
measurement is inhibited by low voltages.
Full RTC
compensation 0.2KB Y Y
2nd-order compensation of RTC to 4ppm, using
temperature. Temperature based correction does not
occur when the ADC mux is off-line.
Temperature
measurement 0.0K Y Y Provides difference from calibration temperature to
precision of 0.1 C when calibrated
Table 5-5: Compensation Features
Code
Size
1
φ
3
φ
Description Feature
Wh imports Y Y Standard option of milliwatt hours, “999.999”
Pulse output for
Wh imports 0.23KB Y Y Standard option of 1 kh/pulse on both DIO 6 and DIO
2.
VAn pulse output 0.25KB Y Y Volt-amperes, 1 kh/pulse
Wh equation 0 0.2KB N/opt N 1 element 2 wire
Wh equation 1 0.2KB N/opt N 1 element 3 wire
Wh equation 2 0.2KB Y N 2 element 3 wire delta
Wh equation 3 0.2KB N N/opt 2 element 4 wire delta
Wh equation 4 0.2KB N N/opt 2 element 4 wire wye
Wh equation 5 0.2KB N Y 3 element 4 wire wye
Frequency
register 0.1KB Y Y Inhibited if freq > 70Hz or voltage is below the
threshold
Wh export register 0.25KB Y Y Wh exported, display reads “999.999”
Wh export pulse
output 0.25KB Y Y Wh exported, display reads “999.999”
VARh signed
register 0.1KB Y Y Used for autocalibration, and power factor
calculations.
VARh import
register 0.4KB Y Y
VARh import
pulse output 0.25KB Y Y
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