Datasheet

41
TAC Xenta 421A and 422A are Universal Input/Digital Output modules in
the TAC Xenta family. They can be used as normal Xenta I/O modules or
as certified LonMark
®
devices. Both modules have four universal inputs and
five digital outputs. The universal inputs can be used as digital, thermistor,
current, or voltage inputs. In addition, TAC Xenta 422A is equipped with LED
status indicators, one for each digital input, and manual override switches for
the digital outputs. The LED colors, red or green, can be selected individually
by altering the parameter settings in TAC Menta
®
graphical tool or manually
at start up.
TAC Xenta 421A and 422A
Universal Input and Digital
Output Module
SPECIFICATIONS
Operating voltage . . . . . . . . . . . .24 V AC ±20%, 50/60 Hz or
21.6-40 V DC
Power consumption . . . . . . . . . . .max. 4 W
Ambient Temperature
Storage. . . . . . . . . . . . . . . . . . . . .–20 °C to +70 °C (–4 °F to +158 °F)
Operation . . . . . . . . . . . . . . . . . . 0 °C to +50 °C (+32 °F to +122 °F)
Humidity . . . . . . . . . . . . . . . . . . .max. 90% RH non-condensing
Dimensions incl. base . . . . . . . . .90 x 110 x 77mm (3.5” x 4.3” x 3”)
Protocol . . . . . . . . . . . . . . . . . . . .FTT-10, LonTalk
®
Transmission rate . . . . . . . . . . . . .78 kbits/s
Universal inputs
Quantity . . . . . . . . . . . . . . . . . . .4
Duration of counting pulse . . . . . .min. 20 ms
Indication . . . . . . . . . . . . . . . . . . .Status LEDs, red or green adjustable via
TAC Menta or manually at start up
(TAC Xenta 422A only)
As thermistor input: . . . . . . . . . . NTC, 1800 ohm or 10 kohm at 25ºC
(77ºF)
As voltage input . . . . . . . . . . . . . .0 – 10 V DC
As current input . . . . . . . . . . . . . .0 (4) - 20 mA
Digital outputs
Quantity . . . . . . . . . . . . . . . . . . .5
Switching capacity . . . . . . . . . . . .250V AC / 2A
Manual switch . . . . . . . . . . . . . . .ON, AUTO, OFF (TAC Xenta 422A)
Indication . . . . . . . . . . . . . . . . . . .Status LEDs green (TAC Xenta 422A)
For further specifications, see technical data sheet.
DESCRIPTION
0-073-0245-0 TAC Xenta 421A without LEDs, without manual
override switches
0-073-0246-0 TAC Xenta 422A with LEDs, with manual override
switches
ACCESSORIES
0-073-0902-0 TAC Xenta 400 terminal part
Programmable Controllers
FUNCTIONAL FEATURES
• Universal inputs provide
installation flexibility
• Designed for TAC Vista and
open standard LonWorks
systems
• Perfect for distributed
installations
• Manual override switches
provide local bypass operation
• Cost-effective installation and
maintenance using separate
terminal base and plug-in
electronic units
• Individually configurable using
the TAC Menta programming
tool