Switch Outputs; Operation; Maintenance; Trouble-Shooting - Viessmann 4568 Bedienungsanleitung

4.8 Programming with POM
The decoder supports programming of all CVs per POM ("Programming on the main"). Since not all command stations support POM for
switching decoders you may also set the decoder to respond to the locomotive POM mode. Enter the value 80 in CV 8 of the address 9999.
Then the point decoder responds to normal POM commands for locomotives under the respective address. For safety you should first edit
CV 1 and then CV 9, even if the value of CV 9 is unchanged.
Please be careful to avoid inadvertent programming of other locomotives with the same address. Remove locomotives with the same
address from the track or disconnect power to such track sections. If RailCom is active, the corresponding feedback will be sent to the
command station.

4.9 Switch outputs

The switch outputs can be configured to suit various functionalities (CV 38). The outputs are intended for relays, but can also power small
loads such as LEDs.
4.10 Feedback via relays
The point motor is equipped with a transistor-driven output, which is able to indicate the position of the point. This output is used to operate
latching relays. The contact is turned on for ca. 250 ms, when the point reaches its respective end position.
With these contacts (soldering pads on the back of the casing), you may feedback the position of the point to a suitable control system. The
second use is to trigger a separate turnout frog polarisation.
Due to the low maximum load of the contacts and the short pulse length, it is important to use a relay (e. g. the Viessmann electronic relay,
item 5552) as shown in fig. 7.
4.11 Other functions of the switch outputs
Besides the switch pulse already described, the outputs can also be set to continuous mode with various commands (refer to CV 38).
The outputs can be digitally switched as continuous outputs. The address of the output is then automatically the decoder address plus 1
(see CV 38).
You will find more options under CV 38 in the CV table.
4.12 Feedback via RailCom
The point motor sends via the RailCom protocol the following information to the digital command station:
- Position of the point
-
CV contents
To use this option the command station must address the decoder as an individual decoder. However, some command stations process
feedback in groups (groups of 4). This leads to faulty feedback if there is more than one drive in the same group. If you wish to utilize the
RailCom feedback please consult the manual of your command station regarding the request of feedback.
Should you encounter problems with RailCom simply assign only one drive to one address group. It is immaterial which address of the group
you choose. You may utilize the other addresses of this group for decoders without RailCom (group addresses: Group 1: Addresses 1 – 4,
group 2: Addresses 5 – 8, etc.).

5. Operation

5.1 Operating points
Push the appropriate button on the push-button panel (conventional use) or send an appropriate request/order to the address of the point
motor (digital use). The point motor now turns the point with a realistic speed. This operation lasts ca. 2.5 seconds. During this operation, the
point motor saves another request/order, if this means another position and executes it after a short break of ca. 0.5 seconds.

6. Maintenance

Caution:
Never dismantle the point motor. This may result in damage or injury. The Viessmann point motor is maintenance free.

7. Trouble-shooting

All Viessmann products are produced with high quality standards and are checked before delivery. Should a fault occur nonwithstanding,
you can do a first check.
Point motor works audibly, but the point does not move.
- Check the correct installation of the drive in the point.
- Check for free movement of the drive and the point mechanics.
- Possible cause: The actuating rod of the drive is not properly connected to the point mechanics.
- Possible cause: Scenery material (little pebbles, ballast, etc.) has penetrated the area of the actuating rod.
Point motor is getting very hot and/or starts to smoke.
- Disconnect the system from the mains immediately!
- Check if the wiring was made correctly as shown in this manual.
- Check the state of the electronics housing for damage.
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