TAC Xenta 400 Series, Manual

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TAC Xenta, TAC Xenta® 400 I/O Modules 3 Technical Description
TAC AB, Dec 2004 29 (48)
0-004-7771-3 (EN)
3.7 TAC Xenta 471 Analog Input module
The module has eight universal analog inputs (U). The analog inputs
can independently be used for current input or as voltage inputs. The
current inputs use either the internal power (24V DC) or the external
power (M).
Terminals on 471
Technical data TAC Xenta 471
Supply voltage (G, G0) .................................24 V AC ±20%, 50/60 Hz
or .......................................................................... 19–40 V DC
Power consumption ............................................................... max. 10 W
Transformer sizing .......................................................................10 VA
Universal inputs (U1–U8):
Quantity..........................................................................................8
A/D-resolution ......................................................................12 bits
– as current input with an external power supply;
Input signal (terminals U–M)........................................ 0/4–20 mA
Input resistance .................................................................. 20 ohms
accuracy ................................................................ within 0.02 mA
– as current input with an internal power supply;
Input signal (terminals 24 V DC–U).................................4–20 mA
Input resistance .................................................................. 20 ohms
Fig. 3.8: The TAC Xenta 471 terminal
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
G G0 C1C2 U1 M U2 U3
~ 0
24 V AC
(19-40 V DC)
}
Comm
}
M U4 U5 M U6 U7 M U8
24 V DC
24 V DC 24 V DC
24 V DC
Green LED
Table 3.6: TAC Xenta 471 summary
Type No. TAC Menta Block type Terminal ref. Override
Universal inputs 8 AI - Analog inputs U1 - U8 (n.a.)