
21
SICAM AI Unit 7XV5674, Product Information
E50417-B1150-C492-A1, Edition 09.2012
10 Measurands and Calculated Measurands
1) Tolerance limits referred to the rated current under
reference conditions (see Chapter 17.3)
The measuring accuracy amounts to 1.0 % of the
rated current (20 mA) under environmental impact.
The measurement cycles on the board 1 and board 2 are
carried out simultaneously.
A complete measurement cycle amounts to 642 ms for 6
channels. The measurement of one channel amounts to
107 ms and is repeated after 642 ms.
1) The mean value window begins always to the full 10s.
2) The mean value window begins always to the full 1min.
3) The mean value window begins always to the full 1h.
4) The mean value window begins always at 0 o’clock
device time.
Measurand
Circuit
Measuring
Range
Tolerance
limits
1)
Direct current
I
DC
Channel 1 to 12
(current measurement)
0 mA to 20 mA
4 mA to 20 mA
± 0.2 %
Measurand
Calculated
Measurand
Measuring Range
Direct current I
DC
Channel 1 to 12
(10 s mean value)
1)
0 mA to 20 mA
4 mA to 20 mA
Direct current I
DC
Channel 1 to 12
(1 min mean value)
2)
0 mA to 20 mA
4 mA to 20 mA
Direct current I
DC
Channel 1 to 12
(1 h mean value)
3)
0 mA to 20 mA
4 mA to 20 mA
Direct current I
DC
Channel 1 to 12
(24 h mean value)
4)
0 mA to 20 mA
4 mA to 20 mA