Belimo CR24 Series, Информация о продукте

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Single room controller with one analog output
and two digital outputs
CR24-B2E
10 www.belimo.com
Pr
oduct information S4-CR24-.. • en • v2.3 • 08.2022 • Subject t
o changes
Product features
Energy hold off
In energy saving mode, the room temperature is reduced to building protection level, i.e. either the
heating setpoint is significantly reduced or the cooling setpoint is significantly increased, for in -
stance in a room with an open window.
Stand-by
The room temperature is reduced to stand-by level, i.e. either the heating setpoint is slightly re -
duced or the cooling setpoint is slightly increased, for instance in a room that is temporarily unoc-
cupied.
Frost
The frost protection function is activated if the actual room temperature falls below 10°C.
Boost
The room can be ventilated with the maximum volume flow (V′
max
) or heated up with the
maximum capacity.
Supply air temperature limiter
An optional mounted sensor allows to control the supply air temperature to a maximum of 50°C.
V'max at heating
For electrical reheaters the air volume at the heating condition can optionally be increased.
Output mode
The do3 output mode can be set accordingly to the application to
– stage for one-stage electrical reheater or on/off radiator valve
– binary for two-stage electrical reheaters (stage I: 1/3 , stage II: 2/3) which will be 1/3, 2/3, 3/3
Soft start (Roll-out feature)
The build-in start-up and roll-out of the stage control provides temperature excess protection. This
helps to avoid service calls due to switched-off safety chains and reduces the electrical load after
a power-fail.
External setpoint shift
An external DC 0...10 V signal at the analog input ai2 can be used to shift the basic setpoint
0...10 K, for instance for the summer/winter compensation.
These functions are described in detail on pages 17 to 24.
Configuration / Prinzipal diagram
II
I
Y [V]
Boost
t
R
[°C]
10
8.4
2
0
V
maxH
.
V
min
.
V
max
.
ao1
W
H
W
C
do3
Key
Y [V] Output voltage in volt
ao1
Cooling output
t
R
[°C] Room temperature in degrees centigrade System output for Belimo VAV controller
W
H
Heating setpoint
do3
Heating stage I
W
C
Cooling setpoint Heating stage II
Output on/off V'
max
Maximum volume flow
V'
maxH
Maximum volume flow heating
V'
min
Minimum volume flow
Configuration
DIP
Default-
settings
1 1 or 2 stage Binary mode
2 V‘
max
heating off V‘
max
heating on
1 2