Overview of functions
CR24-..
4
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Pr
oduct information S4-CR24-.. • en • v2.2 • 05.2010 • Subject t
o changes
Overview of CR24-B.. functions
CR24-B1
CR24-B2
CR24-B2E
CR24-B3
Power supply
AC 24 V / 50/60Hz
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Application / Temperature range
– Room temperature control in comfort zone
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– Internal temperature sensor (Type NTC, sensing range 10...45°C)
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– Setpoint (adjustment range 15...36°C)
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Operation
(CR24-B.. only)
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– Mode selection
Switch:
AUTO – ECO – MAX
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– Mode indication LEDs:
AUTO – ECO – MAX
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– Setpoint adjustm. Rotary knob: ±3 K
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Inputs
Number
4
5
5
5
– Energy hold off
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– Stand-by
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1)
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– Change-over
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1)
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2)
– Chilled ceiling with dew point limiting and change-over
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2)
– Air flush
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– Boost
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2)
– External temperature sensor (Type NTC, sensing range 10...45°C)
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– External setpoint shift 0...10 V
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Outputs
Number
1
2
3
3
– (0)2...10 V system output for Belimo VAV controller or change-over
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3)
– (0)2...10 V system output for Belimo VAV controller
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– Heating output 3-point
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– Electrical reheater 1...3 stages or on/off radiator valve
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– Heating or cooling output, change-over 0...10 V
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4)
Functions
– Control characteristics
P
P
P
P / PI
– P-band switchable
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– Boost function V'
max
or temperature-controlled, selectable
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– Boost function temperature-controlled
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– Volume increase in heating mode, selectable
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– Internal function test, including nominal voltage test
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– Commissioning mode with output and sequence simulation
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– VAV controller diagnosis via integrated PC-Tool connection
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Mounting
Surface mounting with flush-mounted or surface-mounted connection
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Housing colors
Baseplate NCS2005-R80B light gray
(corresponds approx. to RAL 7035)
Cover
RAL 9003 signal white
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1)
The stand-by input is not available in change-over (C/O) mode or in heating controller applications, as it is
assigned to the change-over input function. CR24-B3 should be used if the stand-by function is needed in a
change-over application.
2)
The boost function is not available in change-over mode or in chilled ceiling applications with dew point
limiting. A combination of change-over and dew point limiting is possible.
3)
The output can either be used as a common cooling and heating output in change-over mode or exclusively
as a cooling or heating output. The stand-by function is not available in change-over mode or in heating
controller applications.
4)
The output can either be used as a common cooling and heating output in change-over mode or exclusively
as a cooling or heating output.
Additional documentation
Comprehensive and regularly updated documentation with descriptions of specific applications is
available for all controllers.
Содержание CR24 Series
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