S N V 0 1 8 E C . X X
U S E R & I N S T A L L A T I O N M A N U A L
V 3 . 1
© SNV Engineering Ltd
4
Measurement Characteristics
Maximum averaging time
15 days at 1kHz sampling
Measurement Accuracy
±1% of measurement current
ADC resolution (12bit)
3.3mA
Thermal Drift on board
compensated (Note 5)
0.04‰ / °C
Calibration current
at 5.5 A
Note 5: Compensation, even for averaged values, is performed before value
transmission using actual board temperature, measured by the on board
temperature sensor. Long time averaging with large temperature variations
could produce thermal drifts on the transmitted values respectively.
Communications and bus Characteristics
Hardware layer
RS485
Communication Protocol
Modbus RTU
Default baudrate
9600 bps
Max number of nodes
128
Max suggested cable length
1200 m
Protected from Overvoltage Line Faults up to
±60V
Clamp diodes (A and B to GND)
±30V
Bus Short-Circuit Protection
Yes
Содержание SNV018EC.XX
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