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Product Description
FBR3
Datasheet 2.50-60.003-01-EN
Issue 2016-01-05
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Lines for the power supply and fieldbus should be laid together in one shielded cable, cable type
at least 0.8 mm in diameter, with the wires twisted together in pairs. Here, one twisted pair of wires
is to be used for the power supply and another for the fieldbus (see wiring diagram).
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At the end of the fieldbus (furthest point from the DDC controller, max. 2000 m), the two connection
lines must be fitted with a terminating resistor of about 180
(terminating resistor is included with
the DDC controller).
Setting the Fieldbus Address
The rotary switches for setting the fieldbus are
located inside the cover. Information on opening
and closing the device can be found in the chapter
"Mounting and Installation", page 5.
Set the first rotary switch to the first digit of the
fieldbus address, the second rotary switch to the
second digit.
The example shows the address 15.
Permitted range for the fieldbus address: 01 to 63
After setting
the address to 00
and switching on
the power, the FBR3 functions in the self-control
program. (See chapter “self-control program.”,
page 6.)
self-control program.
Use without a controller is possible. The
self-control program
is then responsible for the control
functions of the FBR3. To use the self-control program, set the fieldbus address to “00” (See
chapter “Setting the Fieldbus Address”, page 6.).
Use of the self-control program is indicated by the flashing red external LED.
In the self-control program, the FBR3 regulates the system to a setpoint of a 15 °C night setpoint or
20 °C day setpoint as a constant P loop controller.
The closed loop control function affects the heating (output Y1) and cooling (output Y2) sequences.
The contact K2 is used to switch between the night setpoint and day setpoint.
K2 open = night setpoint 15 °C
K2 closed = day setpoint 20 °C
NOTE
The setting knob is
not
supported in the self-control program.
Further information can be found in the project planning documentation.
Bridging program
If communication with the automation station is interrupted, the FBR3 continues to work with the
current parameterization in the
bridging program
.
Use of the bridging program is indicated by the illuminated red external LED.
19
36
1
18
0 1
2
3
4
5
6
7
8
9
0 1
2
3
4
5
6
× 10
× 1
