26 Device Description
WAGO I/O System 750
753-482 2AI 4-20mA 12 Bit S.E. HART
Manual
Version 1.2.0
3.5
Technical Data
3.5.1
Device
Table 9: Technical Data – Device
Width
12 mm
High (from upper edge of DIN 35 rail)
64 mm
Length
100 mm
Weight
Approx. 53 g
3.5.2
Supply
Table 10: Technical Data – Supply
Voltage Supply
Via system voltage local bus DC/DC,
~10 mA without sensor supply
Input current
< 65 mA
Input voltage
max.
24 V
Input voltage drop
(I
meas
< 28 mA):
not linear, as protected against overload
U = 0.9 V + 270
Ω
× I
meas
Isolation
500 V system/supply
3.5.3
Communication
Table 11: Technical Data – Communication
Data width
2 × 2 bytes data
or
2 × 2 bytes data + 2n × 4 bytes data
(n = number of dynamic variables)
or
2 × 2 bytes data + 6 bytes mailbox
3.5.4
Inputs
Table 12: Technical Data – Inputs
Number of inputs
2
Signal current
4 mA … 20 mA
HART input filter
100 Hz
Resolution of the A/D converter
12 bit
Conversion time (typ.)
10 ms
Measuring error 25°C
0.1 % of final value (non-linarity)
Temperature coefficient
< ±0.01 % / K of full scale value
Line break detection
I
meas
< 3.10 mA
Short circuit detection
I
meas
> 22 mA
Overvoltage protection
30 V, reverse polarity protected
Diagnostics
Wire break, measuring range overflow
