NRT405F901 manual
Chapter 4
Technical data
8
Chapter 4 Technical data
Supply voltage ........................................................................... 230 V AC ±10 %, 50...60 Hz
Power consumption ......................................................................................................... < 3 W
Outputs, relays for fan control ............................................................. 230 V AC, 3 A fan-coil
Actuator, Triac .................................................................................... 230 V AC, max. 300 mA
Basic setpoint ................................................................................................................5...50°C
Hysteresis .................................................................................................... ±0.5 K (adjustable)
P-band ................................................................................................................................ 10°C
I-time ................................................................................................................................. 300 s
Analogue input ...................................................................................................... One PT1000
Digital input .......................................................................... One closing potential-free contact
Universal input ................................................... One PT1000 or closing potential-free contact
Mounting ............................................................................................................................ Wall
Protection class ................................................................................................................... IP20
Communication
Type ....................................................................................... RS485: Modbus (with automatic
............................................................................................. detection/change-over) or BACnet
Communication speed ........................................................ 9600, 19200, 38400 bps (Modbus
................................................................................ and BACnet) or 76800 bps (BACnet only)
Functions as
Modbus .................................................................................................................... RTU slave
BACnet ............................................................................................. MS/TP Slave and Master
Modbus ......................................................8 bits, 1 or 2 stop bits. Odd, even (FS) or no parity
Memory
Non-volatile (EEPROM) ........................................... All settings and configurations are saved
See also chapter named
Memory functions during power failure.
Built-in temperature sensor
Type ................................................................................................ NTC, linearised, 15 kOhm
Measuring range ...........................................................................................................0...50°C
Accuracy of measurement ....................................................................... +/-0.5°C at 15...30°C
Built-in display
Display type .......................................................................................................... Backlit, LCD
CE
This product conforms to the EMC and LVD requirements in the European harmonised
standards EN 60730-1:2000 and EN 60730-2-9:2002. It carries the CE mark.
ROHS
This product conforms to the Directive 2011/65/EU of the European Parliament and of the
Council.
Inputs
AI ............................................................. External PT1000 sensor instead of the internal NTC
UI ...................................... Change-over input; potential-free switch (configurable for NO/NC
...................................................................................................................................
or
PT1000
DI ...................................... Digital input; potential-free window contact or occupancy contact,
............................................................................................................ configurable for NO/NC.
