Bosch Appliances 3.5 Cobranet interface fault OR, Cobranet network fault, en, Class-Aswitchover

Praesideo 3.5 Installation and User Instructions 10 Events

en 422

Event message:

Call station audio path fault

Originator:

Call station in which the fault occurred. Extra information:

----

Description:

Logs an audio path fault of a call station. Resolve:

When the call station disconnects or when the fault is resolved manually.

Recommended action:

Replace the call station.

Event message:

Class-A switchover

Originator:

Output channel of multi channel interface, connected to a basic amplifier channel in which the fault occurred.

Extra information:

----

Description:

Logs the occurrence that, in class-A mode the second

(B) relay has closed. Resolve:

When the unit disconnects or when the fault is resolved manually.

Recommended action:

Check the loudspeaker connections in the loop from output A to output B.

Event message:

Cobranet interface fault OR

Cobranet network fault

Originator:

Unit in which the fault occurred. Extra information:

Error code reported by the CobraNet interface Description:

Internal fault in the LBB4404/00 CobraNet Interface or CobraNet network fault. Most common faults are network faults, such as reception and transmission faults due to collisions, excessive network delay or broadcast traffic. Other faults could be related to the configuration.

Resolve:

When the error is no longer present or when another CobraNet error occurs on the same unit) Recommended action:

•Make sure that the CobraNet interface is not connected to the Ethernet via a hub. Only use (managed) Ethernet switches. Repeater networks cause collisions.

•Make sure that the Ethernet network does not contain any loops.

•Check the Ethernet connections and the lengths of the Ethernet cables.

•If the Ethernet is also used to transport computer data, configure a high priority on the switch for the port that is used for CobraNet.

•Check if the bundle and channel numbers have been assigned correctly. Also check that at least one CobraNet device has a conductor priority unequal to zero.

•Check for each bundle number if it is not used by more than one transmitter.

•(Temporarily) disconnect other devices connected to the network to check if these are causing faults by transmitting corrupt packets.

For specialists only: the fault code is a reference to the CobraNet fault description, which can be found in the Error Code Reference part of the CobraNet Technical Datasheet. This datasheet can be downloaded from: http://cobranet.info/en/pubs/manual/CobraNet_Progr ammer_Manual_PM25.pdf

Bosch Security Systems 2011-02