Product type | Controller |
IP rating | IP30 |
Manufacturer | Belimo |
Power Supply | 24Vac/Vdc |
Parametric | Room Controller |
Programmable | Controllers |
CR24-B3 - Room temperature controller with 3 sequences AC 24 V Selection mode
• Room temperature controller with 3 sequences
• AC 24 V
• Selection mode, display: AUTO / ECO / MAXIMUM
• Setpoint: 18...35º C, rotary button: +/- 3 K
• Temperature sensor: NTC internal 0, external: 10...45º C
• 5 inputs: EHO, Stand-by, (C/O / Boost / dewpoint),
• 0...10 V shift, ext. temperature sensor
• 3 outputs: VAV 0 / 2...10 V, heating 3-point,
• Heating / cooling 0...10 V
• Control characteristics: modulating, P-controller, P-Band switchable
• Housing colour white RAL 9003
• Base colour light grey NCS 2005 -R 80 B
• Nominal voltage AC 24 V 50/60 Hz
• For wire sizing 3 VA, without actuators
• Power supply range AC 19.2...28.8 V
• Connections Terminal block 1...3: 2.5 mm2Terminal block 4...8: 1.5 mm2
• Control characteristics P / PI – P-band heating / cooling Selectable: 1.5 / 1.0 K or 3.0 / 2.0 K
• External temperature sensor (ai1) Type NTC, 5 kΩ, sensing range 10...45°Cfor example Belimo type TFK
• Heating setpoint Range 15...36°C (default 21°C) – Energy hold off Heating 15°C / cooling 40°C – Stand-by Heating –2 K / cooling +3 K
• Dead band 1 K
• Frost limit temperature 10°C
• Operation (CR24-B.. only) – Mode switch and status indication (LEDs) AUTO (green) – ECO (orange) – MAX (red) – Rotary knob for setpoint adjustment ±3 K
• Communication port for field devices 2 x PP (for PC-Tool, MFT remote control etc.)
• 2 x analog, 3 x digital – External temperature sensor (ai1) Type NTC, 5 kΩ, sensing range 10...45°C – External setpoint shift (ai2) 0...10 V corresponds to 0...10 K – Digital inputs (di1, di2, di3) Contact rating 10 mA
• 3 x analog – VAV system output (ao1) (0)2 ... 10 V, max. 5 mA – Heating / cooling output (ao2) 0...10 V, max. 5 mA – Heating output (ao3) 3-point, AC 24 V, max. source current 0.5 A / 10 (optimized for actuators with a running time of approx. 150 s)
• Protection class III Safety extra-low voltage
• Degree of protection IP 30 to EN 60529
• Mode of operation Type 1 to EN 60730-1
• Software class A to EN 60730-1
• EMC CE conformity to 89/336/EEC
• Ambient conditions – Operation 0...+50°C / 20...90% rH (without condensation – Transport and storage –25...+70°C / 20...90% rH (without condensation
• Dimensions (H x W x D) 99 x 84 x 32 mm
• Weight 105 g
• BaseplateCover NCS2005-R80B light gray (corresponds approx. to RAL 7035)RAL 9003-Signalweiss