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t-NEXT DF DX
MICROPROCESSOR CONTROL SYSTEM
Controller
Keyboard and Display
T_tNEXTDFDX_0719_EN
The unit is equipped with the controller connected to a 6 keys keyboard with graphic display on which all
information in English language or easily identifiable symbols are displayed.
The controller disposes of a "flash" memory that preserves the information even in absence of power
supply. Part of memory is dedicated to the registration of intervened events - up to 200 events.
DISPLAY – KEYBOARD FUNCTIONS
ALARM
PRG
ESC
UP
DOWN
ENTER
DISPLAY - MAIN MASK
The main mask shows time, date, room temperature and humidity values (if the relative probe is
present) and areas for displaying operating and alarm status with dedicated icons:
Area 1: Status of the unit: on / off
Area 2: Status detail
Area 3: Type of event (only in case of an event)
Area 3_A: Code and type of event
Area 4: Active cooling devices
Area 5: Active free-cooling devices
Area 6: Active humidity devices
CONNECTIVITY
Through the optional serial port, the microprocessor control enables communication with the modern
buildings BMS systems with the following protocols: MODBUS; LON; BACNET MS/TP RS485; BACNET
OVER IP.
PASSWORD
Level 1:
On request of the End User. Allowing to reach USER menu
Level 2:
Asks to Service: Allowing to reach SERVICE menu
Level 3:
Asks to Service: Allowing to reach FACTORY menu
No passwords request to enter: UNIT, SETPOINT, IN/OUT, CLOCK, HISTORY menu
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Alarm presence with red light.
Push for alarm description.
In case of more alarms scroll by UP / DOWN.
Menu list, scrolled by UP/DOWN:
Unit; Set-point; In/Out; Clock; History; User; Service;
Factory. ENTER to execute.
Home. Used to come back to the previous menu level or to the
main screen.
Changes pages and values of sets.
By pressing in HOME mask, the synoptic of the main controls is
displayed.
Moving the cursor on adjustable Program(s) fields to confirm
the changes.
Press ENTER to get out the fields.
D
D
Area 7: Active heating devices
Area 8: on / off parameters
Area 9: BMS address
Area 10: LAN address
Area 11: Schematic representation of units
Area 12: Active function presence icon
Y
Y
MEHITS S.p.A.
DATA BOOK
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