SIGMATEK SAI 041, Руководство по эксплуатации

Страница: 12 / 32

SAI 041 SAFETY ANALOG INPUT CURRENT MODULE
Page 10 18.05.2022
3 Technical Data
3.1 Analog Input Specifications
Number of channels 4
Measurement range 4-20 mA
Measurement value 12,000-60,000
Measurement range Overrange
and Under range
1)
0.5-21.6 mA
Measurement range Overrange
and Under range 1500-64,800
Input type differential input
Galvanic separation none
Measurement range resolution 16 bits
ca. 0.371 µA/LSB
Conversion time for all channels 1 ms
Common mode range ±10 V
Load typically 55

Cable break monitor configurable min. 0.5 mA
Input filter hardware 1 kHz, low pass 3rd order (common mode)
Input filter software low pass 1st order (Configurable or can be deactivated)
Input delay dependent on software filter
3)
Measurement precision, 1-
channel ±1.0 %/200 µA
2)
(0-60 °C)
Measurement precision, 2-
channel ±2.0%/400 µA
2)
(0-60 °C)
Linearity 0.006 %
Status display 1x green status LED per channel, 1x red error LED per channel
1)
A safety error is triggered if the value exceeds the upper or lower limits of this measuring range.
2)
The measuring accuracy refers to the nominal measuring range of 4-20 mA
3)
The input delay t in milliseconds can be calculated using the formula below
𝑡 =
5000
2 ∗ 𝜋 ∗ 𝑓𝑖𝑙𝑡𝑒𝑟 𝑓𝑟𝑒𝑞𝑢𝑒𝑛𝑐𝑦(𝐻𝑧)