The Controller; Description Of The Air Handling Units - CIAT AirControl CTA Manuel De Régulation

1.3 The controller

The descriptions of the terminals on the controller are provided below.
1. power supply connector [G(+), G0(-)]
2. Yellow power LED and red alarm LED
3. additional power supply for terminal and 0-5 V ratiometric sensors
4. universal analogue inputs (NTC, 0-1 V, 0-5 V, 0-10 V, 0-20 mA, 4-20 mA)
5. passive analogue inputs (NTC, PT1000, ON/OFF)
6. 0-10 V analogue outputs
7. 24 V AC/V DC digital inputs
8. 230 V AC or 24 V AC/V DC digital inputs;
9. Not used
10. connector for all HMI terminals and for downloading the application program
11. relay digital outputs
12. I/O expansion card connector
13. pLAN network connector, addressing and LED
14. housing cover for communication card to the CMS (LON, ModBus)
15. housing cover for the fieldbus communication card
16. built-in terminal (LCD, buttons and LED)(not available)

1.4 Description of the air handling units

The unit can perform the following functions:
- Air filtration
- Ventilation and exhaust (option).
- Control, monitoring, reporting and regulation of its components.
- Air cooling by means of a chilled water coil and/or a free cooling damper (option).
- Air heating by means of a hot water coil, an electric heater or a gas-fired unit (option).
- Heat recovery via a rotary or plate heat exchanger (option).
- Control, monitoring, reporting and regulation of its components.
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