Belimo CR24 Series, Информация о продукте

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Functions
CR24-..
18 www.belimo.com
Pr
oduct information S4-CR24-.. • en • v2.3 • 08.2022 • Subject t
o changes
Y [V]
t
R
[°C]
W
A
10
2
0
V
max
.
V
min
.
Y [V]
t
R
[°C]
W
A
10
8.4
2
0
ao1 ao2 ao3
ao1
V
max
.
V
min
.
If a local detector (e.g. a window switch) acts on the digital input di1 and
closes the corresponding contact, the room is adjusted to the building
protection settings in energy saving mode, in other words the heating
setpoint is significantly reduced (15°C) or the cooling setpoint signifi -
cantly increased (40°C), though not sufficiently to cause damage to sen -
sitive objects (plants, paintings etc.).
Typical applications
– A window switch at di1 stops all energy consumption from the mo -
ment the window is opened until the lower or upper building protec -
tion limit is reached.
– Higher-level override command, e.g. building management system.
Notes
– The minimum VAV output is set to 0 V instead of 2 V while energy hold
off is active (forced closing in 2...10 V)
– The mode switch (operator level 1) is deactivated while energy hold
off is active (input di1 takes priority).
– If an external temperature sensor is used, the frost limit is monitored
by the internal sensor while energy hold off is active.
– Due to the automatic sensor detection the change into energy hold off
takes about 40 seconds.
If a local detector (e.g. a motion detector) acts on the digital input di2
and closes the corresponding contact, the room is adjusted to the stand-
by settings, in other words the heating setpoint is reduced by 2 K or the
cooling setpoint is increased by 3 K.
Typical applications
– A motion detector, a light switch or another detector at di2 reduces
the energy consumption of unoccupied rooms.
– Higher-level override command, e.g. building management system.
Y [V]
t
R
[°C]
W
A
10
2
0
V
max
.
V
min
.
1 2
4
~
+
di2
AC 24 V
CR24-B..
Stand-by
Stand-by
Energy hold off Digital input di1 all CR24-..
Stand-by Digital input di2 all CR24-..
If the selected application requires an increased air volume for heating,
e.g. for:
– Providing or assisting heating with air.
– Improving the air quality during heating.
VAV function: air volume in heating mode (Reheater) CR24-B2 und CR24-B3 only
CR24-B2 configuration
The VAV function is configured using DIP switch 2.
1 2
CR24-B3 configuration
The VAV function is configured using DIP switch 2.
6 1 2 4 3 5
V'
max
heating
closed
1 2
3
~ +
ai/di1
AC 24 V
NTC
CR24-B..
Energy hold off
Energy hold off
Key
Y
Output signal
t
R
Room temperature
W
A
Current setpoint
Key
Y
Output signal
t
R
Room temperature
W
A
Current setpoint
Key
Y
Output signal
t
R
Room temperature
W
A
Current setpoint