Belimo CR24 Series, Информация о продукте

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Functions
CR24-..
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Pr
oduct information S4-CR24-.. • en • v2.3 • 08.2022 • Subject t
o changes
Y [V]
t
R
[°C]
W
A
10
2
0
1 2
12
~
+
di3
AC 24 V
CR24-B2
1 2
5
~
0...10
V
+
ai2
–
AC 24 V
CR24-B..
An external DC 0...10 V signal at the analog input ai2 can be used to shift
the basic setpoint 0...10 K (corresponds to 0...10 V).
Typical application
– Summer/winter compensation
Setpoint shift
Air flush
Air flush
The CR24-B2 controller allows override control at the digital input di3, to
enable the room to be flushed with the maximum volume flow (V′
max
).
Typical applications
– Purging conference rooms, hotel rooms etc.
(e.g. time switch-controlled)
– Assisting smoke extraction
– Controlling air quality (2-point signal)
Notes
– The VAV output ao1 is set to a fixed value of V′
max
(10 V).
– The heating output ao3 remains in the normal control mode and
continues to be controlled by means of the heating sequence.
External setpoint shift Analog input ai2 all CR24-..
Air flush Digital input di3 CR24-B2 only
Notes
A negative shift can be achieved by adjusting the basic setpoint to the re -
quired final setpoint, e.g. from 21°C (default value) to 16°C. In this case:
– 0... 5 V corresponds to 16...21°C and
– 5...10 V corresponds to 21...26°C (see diagram opposite).
Auto
Air flush
W [°C]
S [V]
5.0 0
26
21
16
10
Key
W
Setpoint
S Shift signal
Key
Y
Output signal
t
R
Room temperature
W
A
Current setpoint