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Troubleshooting in the CAN network
To localize the error, switching off of a part of the network at a time in order to see when the error
disappears is recommended.
General tests:
Node numbers - no node number may be allocated twice
Power supply to the bus members (if necessary use the power pack CAN-NT)
Setting of the baud rate (only if using the CAN bus converter CAN-BC/C)
Cabling tests:
For these tests all nodes must be switched off!
Resistance between CAH-H and CAN-L
o
If this is above 70
Ω
, it indicates a missing terminating resistor.
o
If the resistance is below 60
Ω
, then search for extra terminating resistors or short cir-
cuits between wires.
Check for a short circuit between GND or the shielding and the signal wires.
Checking for earth loops - to do this the shielding is disconnected at the relevant node
point and the connecting current measured. If a current exists, then an earth loop exists
courtesy of an unwanted earth connection.
Information on the Eco-design Directive
2009/125/EC
Product Class
1, 2
Energy
effi-
ciency
3
Standby
max. [W]
Typ. power con-
sumption [W]
4
Max. power
consumption
[W]
4
UVR1611
5
max. 8
max. 5
2.4
2.03 / 3.73
2.4 / 4.2
1
Definitions according to Official Journal of the European Union C 207 dated 03/07/2014
2
The classification applied is based on optimum utilisation and correct application of the products.
The actual applicable class may differ from the classification applied.
3
Contribution of the temperature controller to seasonal central heating efficiency in percent, rounded
to one decimal place
4
No output active = standby / all outputs and the display active
5
The class is defined on the basis of the programming of the heating circuit controller, in accordance
with the Ecodesign Directive.
We reserve the right to make technical changes.
© 2015
