Belimo CR24 Series, Информация о продукте

Страница: 15 / 32

Operation CR24-..
www.belimo.com 15
Pr
oduct information S4-CR24-.. • en • v2.3 • 08.2022 • Subject t
o changes
1 2
Mode switch and status indication
There are three possible operating modes:
• AUTO – optimum comfort mode
The room is heated, cooled or ventilated with the highest level of com-
fort, providing this is permitted by the external control signals. All the
control functions (sequence control, boost function) are enabled.
• ECO – optimum energy mode
The room is heated, cooled or ventilated with the stand-by settings,
providing this is permitted by the external control signals. The heating
setpoint is reduced in this mode (–2 K) and the cooling setpoint is
increased (+3 K). The room can be changed from "optimum energy"
to "optimum comfort" in a very short time. Sequence control and the
boost function are enabled. ECO mode is intended for rooms that are
only irregularly occupied resp. at reduced demand.
• MAX – boost function
The room is ventilated with the maximum air volume or heated or
cooled with the maximum capacity, providing this is permitted by the
external control signals. Sequence control is disabled, but the boost
and ventilation functions are active.
The boost function gets deactiveded:
– timer elapsed
– setpoint reached (VAV fix 15 minutes)
– change to another mode (AUTO or ECO)
Measuring point terminals
Measuring points for all terminals (also during operation).
Internal function test
A comprehensive internal function test, including a nominal voltage test
(AC 24 V), can be started for the controller with the mode switch. The
three LEDs (status indication) indicate the voltage level and the states.
Control sequence simulation
The connected actuators, and thus also the heating and cooling control
sequences, can be simulated independently of the room temperature
with the rotary knob for adjusting the setpoint.
PC-Tool connection
Diagnostics sockets 1 and 2 are used for PP communication with the
connected Belimo MFT actuators or VAV controllers. As a result, physical
access to the field devices can be dispensed with.
Operator level 1 – Operation Operating mode / Setpoint CR24-B.. only
DIP switches for configuration
DIP switches 1 and 2 (CR24-B1, BR24-B2 and CR24-B2E) or 1 to 6
(CR24-B3)
Basic setpoint adjustment
Potentiometer 15...36°C (default 21°C)
Label for settings
Used to record the selected settings (DIP switches and basic setpoint).
Operator level 2 – Configuration Application / Parameters all CR24-..
Operator level 3 – Service Test / Simulation all CR24-..
Rotary knob
for setpoint adjustment
Potentiometer ±3 K
Mode switch
• MAX
• ECO
• AUTO
Status indication
• MAX (red)
• ECO (orange)
• AUTO (green)
Order-Nr. Order-Nr.
CR24-B2xxxxx
W
H
U5/
2
U5/
1
1 2 3 4 5 6
ON
OFF
21
36
15
Measuring
point terminals
PC-Tool connection
Internal function test
Basic setpoint adjustment DIP switches for configuration
Label for settings
1
2
3
4
5
6
7
8
Rotary knob
for control sequence simulation
9
10
11
12