-
Possible cause: Short circuit. The point motor was not connected correctly.
-
Possible cause: The electronics housing is damaged or is in contact with metal parts.
Drive moves in the wrong direction.
-
Check the wiring of the control cables as per fig. 5 or fig. 5.1.
-
Check if CV 36 is programmed correctly.
Drive does not operate
-
First check if the drive works in analogue mode. If it does, the most likely cause is an error in the address or protocol programming. Repeat
them and, if necessary, reset the decoder to default values (programme CV 8 to value 8).
Drive seemingly does not function at the programming output
-
Some command stations may not be able to recognise the drive at all when connected to the programming output and will give an error
message. This is due to the low current drawn by the drive. In such cases, connect an incandescent lamp with ca. 20 to 30 mA current
consumption at 16 V to the programming output parallel to the drive. This increases the load current needed for the command station to
recognise a decoder.
Should writing and reading CVs result in error messages, this is also due to the low current consumption of the so-called acknowledge
pulses (confirmation pulses).
Connect an incandescent lamp with ca. 20 to 30 mA current consumption at 16 V to the switching contacts (fig. 7). This increases the
current and enables writing and reading.
Please refer to chapter 8 "Warranty" if you cannot find the cause of the failure and, therefore, cannot eliminate it.
8. Warranty
Each model is tested as to its full functionality prior to delivery. The warranty period is 2 years starting on the date of purchase. Should a fault
occur during this period please contact our service department (service@viessmann-modell.com). Please send the item to the Viessmann
service department for check and repair only after consultation. If we find a material or production fault to be the cause of the failure the
item will be repaired free of charge or replaced. Expressively excluded from any warranty claims and liability are damages of the item and
consequential damages due to inappropriate handling, disregarding the instructions of this manual, inappropriate use of the model, unauthor-
ized disassembling, construction modifications and use of force, overheating and similar.
9. Technical data
Operating voltage (analogue):
Operating voltage (digital):
Current consumption (without load):
Current consumption (switch moment):
Data format:
Feedback log:
Max. total current (feedback outputs):
Protected to:
Ambient temperature in use:
Comparative humidity allowed:
Weight:
Dimensions:
Do not dispose of this product through (unsorted)
domestic waste, supply it to recycling instead.
L 104.9 mm x W 24.5 mm x H 5.3 mm
Subject
to
change
without
mistakes and printing errors.
You will find the latest version of the manual on the Viessmann
website using the item number.
14 – 24 V AC~ / DC=
max. 24 V eff.
ca. 30 mA
< 100 mA
DCC and Motorola (MM)
RailCom
50 mA
IP 00
+8 – +35 °C
max. 85 %
ca. 11.5 g
prior
notice.
No
liability
for
11