Belimo CR24 Series, Product Information

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Technical data sheet CR24-B2
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oduct information S4-CR24-.. • en • v2.3 • 08.2022 • Subject t
o changes
Technical data
Electrical data
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 mm
2
Terminal block 4...8: 1.5 mm
2
Functional data
Control characteristics P
– P-band heating / cooling Selectable: 1.5 / 1.0 K or 3.0 / 2.0 K
External temperature sensor (ai1) Type NTC, 5 k�, sensing range 10...45°C
for example Belimo type 01DT-1HP
Heating setpoint Range 15...36°C (default 21°C)
– Energy hold off Heating 15°C / cooling 40°C
– Stand-by Heating –2 K / c3 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.)
Inputs
2 x analog, 3 x digital
– External temperature sensor (ai1) Type NTC, 5 k�, 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
Outputs
2 x analog
– VAV system output (ao1) (0)2...10 V, max. 5 mA
– Heating output (ao3) 3-point, AC 24 V, max. source current 0.5 A / 10 VA
(optimized for actuators with a running time of
approx. 150 s)
Norms und standards
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 / Weight
Dimensions (H x W x D) 99 x 84 x 32 mm
Weight 105 g
Housing colors
Baseplate
Cover
NCS2005-R80B light gray
(corresponds approx. to RAL 7035)
RAL 9003-Signalweiss
Temperature controllers for single room
applications with two analog outputs:
• The analog output ao1 can be used in VAV
applications to contol one or more
VAV controllers.
• The analog heating output ao3 supplies a
3-point signal.
Safety notes
!
• The controller is not allowed to be used outside the specified field of application,
especially in aircraft or in any other airborne means of transport.
• It may only be installed by suitably trained personnel.
All applicable legal or institutional installation regulations must be complied with.
• The device may only be opened at the manufacturer's site. It does not contain any parts that can
be replaced or repaired by the user.
• The device contains electrical and electronic components and is not allowed to be disposed of as
household refuse. All locally valid regulations and requirements must be observed.
Device variants
Type CR24-A2, same functionality as the
CR24-B2 but without an operator panel.