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Schneider Electric TAC Xenta 400 / Xenta 401 Building Automation Controller
Specifications
表格
| Item |
Details |
| Product |
TAC Xenta 401 freely programmable building automation controller |
| Family |
TAC Xenta 400 programmable controllers |
| Processor |
32-bit, 12.28 MHz |
| Memory |
2 MB Flash program memory; 128 kB SRAM working memory |
| Onboard I/O |
None; I/O expanded through TAC Xenta 400 modules |
| Max. I/O expansion |
Up to 10 Xenta 400 I/O modules |
| Network protocol |
LonTalk / LonWorks TP/FT-10, FTT-10 |
| Network speed |
78 kbit/s |
| Local engineering port |
RS-232, 9600 bit/s, RJ45, for TAC Menta / modem |
| Operator panel |
TAC Xenta OP modular jack; up to 2 panels per controller |
| Supply voltage |
24 V AC ±20 %, 50/60 Hz, or 19 … 40 V DC |
| Power consumption |
Max. 2 W; transformer size 2 VA |
| Real-time clock |
RTC with capacitor backup, approx. 72 hours power-off support |
| Operating temperature |
0 … +50 °C |
| Storage temperature |
-20 … +50 °C |
| Humidity |
Max. 90 % RH, non-condensing |
| Protection rating |
IP20 |
| Housing |
ABS/PC, UL 94 V-0 flame rating |
| Dimensions W × H × D |
90 × 110 × 77.4 mm |
| Weight |
Approx. 0.5 kg |
| Programming tool |
TAC Menta, function-block / FBD graphical engineering |
| LonMark compatibility |
LonMark 3.0; field controller functional profile |
Features and Advantages
- General-purpose HVAC and building automation controller programmed with reusable function blocks.
- Built-in control functions include PID loops, outdoor-air reset curves, schedules, alarms, delays, pulse counting, runtime hours and trend logging.
- Modular I/O architecture allows analog, digital, thermistor and relay outputs to be distributed near controlled equipment.
- LonTalk network variables and SNVT support interoperability with other Lon-based field devices.
- Flash memory retains application programs and configured values after power loss.
- Controller electronics can be removed or inserted from the terminal base without removing supply wiring.
- Local OP panel provides setpoint adjustment, status viewing, alarm display and manual control without a central system.
- Can operate standalone, in a small local network, or connected to a TAC Vista central system.
Applications
- Air handling units, heating, ventilation and air conditioning control
- Boiler, chiller, pump, fan and heat-exchanger monitoring/control
- Office, commercial, hotel, hospital and utility building automation
- Temperature, humidity, pressure and alarm monitoring sequences
- Standalone controller or distributed node in a LonWorks building management network
- Retrofit and legacy TAC Vista / Xenta control systems
Installation and Usage Notes
- The 401 controller has no onboard I/O; select and configure the correct Xenta 400 I/O modules for each signal type.
- Verify controller revision, firmware version and compatibility with existing TAC Menta or TAC Vista projects.
- Use TP/FT-10 twisted-pair LonWorks cable; install the correct network terminator for free-topology or doubly terminated bus segments.
- Provide a 24 V AC/DC supply within tolerance and size the transformer for controller plus connected I/O modules and field devices.
- Keep the unit inside an IP20 cabinet within 0 … +50 °C and non-condensing humidity limits.
- Each I/O module must be associated with only one controller during network configuration.
- For OP panels over 10 m distance, use an external power supply for the panel.
- This product line is legacy/end-of-service; check upgrade path to SpaceLogic AS-P or MP-C before new projects.
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