Belimo CR24 Series, Информация о продукте

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Functions
CR24-..
24 www.belimo.com
Pr
oduct information S4-CR24-.. • en • v2.3 • 08.2022 • Subject t
o changes
Rolling start CR24-B2E only
Excess temperature protection CR24-B2E only
Step control CR24-B2E only
III
II
I
Power on
ON
ON
ON
OFF
CR.. 1
CR.. 2
CR.. 3
EHO
ON
OFF
EHO
120 s 120 s
Auto
An ingenious startup function prevents overload situations when the power is switched on and
stops fuses from being tripped if several air heaters are operated with the same voltage supply.
Power-on behavior
– Power on
– Delay I Electric air heater of the first CR24-B2E enabled
– Delay II Electric air heater of the second CR24-B2E enabled
– Delay III Electric air heater of the third CR24-B2E enabled
– etc.
This function prevents the local safety interlock (STh) from responding unless absolutely necessa -
ry and relieves the load on devices and installations.
When the system is started up after a power on or EHO off, or when EHO active is switched off,
the air heater output is switched on after a delay and the VAV output is switched off after a delay.
The B2E supports two AH control modes:
– Single steps: Simple electric air heaters or
open/close radiator/zone valves
– Binary steps: 2-step electric air heaters in 3-step mode,
e.g. 1/3, 2/3, 3/3
CR24-B2E configuration
This function is configured using DIP switch 1.
– Einzelstufen: Simple electric air heaters or
open/close radiator/zone valves
2 1
(Factory setting)
– Binärstufen: 2-step electric air heaters in 3-step mode,
e.g. 1/3, 2/3, 3/3
2 1
W
H
I
II
I
II
0.75 K 0.75 K
OFF
ON
OFF
ON
W
H
I III
II
I / III
II
0.5 K 0.5 K 0.5 K
OFF
ON
OFF
ON
Single steps
Binary steps
Time
Time
air heater
VAV