TAC Xenta 421A - Page 23

TAC Xenta, TAC Xenta® 400 I/O Modules 3 Technical Description
TAC AB, Dec 2004 23 (48)
0-004-7771-3 (EN)
Technical data TAC Xenta 421A and 422A
Supply voltage (G, G0) .................................24 V AC ±20%, 50/60 Hz
or...................................................................... 21.6–40 V DC
Power consumption.................................................................max. 4 W
Transformer sizing .........................................................................8 VA
Universal inputs (U1–U4):
Quantity..........................................................................................4
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. 20 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..........................± (0.03 mA + 0.4 % of reading)
–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 422A only):
Quantity..........................................................................................4
Color................................ red or green, selected using TAC Menta
Polarity.........non-inverted or inverted, selected using TAC Menta
Digital outputs (K1–K5):
Quantity..........................................................................................5
Control voltage, relay outputs......................... max. 2A, 250 V AC
Control current, to be protected by a max. 10 A fuse,
................max 2 A (greater current allowed for short periods)
Pulse length .....................................................................min. 0.5 s
Manual override for digital outputs (TAC Xenta 422A only):
Quantity..........................................................................................5
Switch positions.................................................. ON, AUTO, OFF
Indicators for Auto output status.................................. green LEDs