TAC Xenta 421A - Page 27

TAC Xenta, TAC Xenta® 400 I/O Modules 3 Technical Description
TAC AB, Dec 2004 27 (48)
0-004-7771-3 (EN)
Technical data TAC Xenta 451A and 452A
Supply voltage (G, G0) .................................24 V AC ±20%, 50/60 Hz
or...................................................................... 21.6–40 V DC
Power consumption..................................................................max. 3W
Transformer sizing .........................................................................6 VA
Universal inputs (U1–U8):
Quantity..........................................................................................8
A/D-resolution ......................................................................12 bits
–as Digital Inputs;
Voltage across open contact..............................................20 V DC
Current through closed contact ...............................................3 mA
Pulse input duration (TAC Menta CNT block)..............min. 80 ms
–as Thermistor Inputs;
TAC thermistor sensor........................ 1800 ohms at 25 °C (77 °F)
Supply voltage.....................................................................1 V DC
or (individually selectable)
TAC thermistor .................................... 10 kohms at 25 °C (77 °F)
Supply voltage.....................................................................5 V DC
Measuring range.................. –50 °C to +150 °C (–58 °F to 302 °F)
Inaccuracy:
–50 °C to –30 °C (–58 °F to –22 °F)...........................................±1.5 °C (±2.7 °F)
–30 °C to 0 °C (–22 °F to +32 °F) ..............................................±0.5 °C (±0.9 °F)
±0 °C to +50 °C (+32 °F to +122 °F)..........................................±0.2 °C (±0.4 °F)
+50 °C to +100 °C (122 °F to 212 °F)........................................±0.5 °C (±0.9 °F)
+100 °C to +150 °C (212 °F to 302 °F).....................................±1.5 °C (±2.7 °F))
–as Current Inputs;
Input signal (terminals U–M; over-current protected)......0–20 mA
Input resistance ................................................................... 47 ohm
Inaccuracy within................................± (7 mV +0.4 % of reading)
Power supply for one 2-wire 4–20 mA transmitter.....20 V DC/25 mA
–as Voltage Inputs;
Input signal....................................................................0–10 V DC
Input resistance .............................................................>100 kohm
Inaccuracy within................................± (7 mV +0.2 % of reading)
LED digital input status indicators (TAC Xenta 452A only):
Quantity..........................................................................................8
Color................................ red or green, selected using TAC Menta
Polarity.........non-inverted or inverted, selected using TAC Menta
Analog outputs (Y1–Y2):
Quantity..........................................................................................2
D/A-resolution ........................................................................8 bits
Control voltage..............................................................0–10 V DC
Control current, short-circuit proof................................max. 2 mA
Deviation..........................................................................max ±1%