Consilium CFD5000 T / CM4.3 User Manual

Service & Maintenance Manual 5Troubleshooting
5100614_CFD5000 T - CM4.3_Service & Maintenance Manual_T_EN_2020_E
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There is a possibility that two or more loop units with the same address will
answer. Possible fault indications include “double address”, “no answer”, “bad
communication” or “abnormal condition”.
If a loop unit has been set to the wrong address, set the correct address to solve the
problem.
5.3 Cable Break
CAUTION!
A loop cable break has to be located and corrected in order to secure the
functionality of the complete fire detection system.
The loop is communicating in both directions and only one cable break will
therefore not cause malfunction. But if the loop cable breaks in a second place or if a
short circuit will occur, all loop units between the two cable breaks or short circuit
will be lost.
CAUTION!
A sub-loop cable break has to be located and corrected as soon as possible in order
to secure the functionality of the complete fire detection system.
The loop units which can have a sub-loop are some types of detectors and I/O units.
NOTE!
A cable break fault cannot be reset in case a fire alarm is present on the loop.
List the loop units
Proceed as follows to locate the cable break on addressable loops:
1 Disconnect one side of the loop (choose the B-side) from the terminals on the
CS-LoopM module, so the loop becomes a spur.
Hint!
When troubleshooting an Exloop installation in a hazardous
(Ex-classified) location/area disconnect one side from the
CS-Isolator unit instead of the CS-Loop module.
2 Wait for 90 seconds.
3 If there is a cable break between the CS-Loop M module and the last loop unit on the
spur, the loop units after the cable break will generate a NO ANSWER fault (Fault
Code 128) on the control panel.
4 List the loop units for the current loop under: Menu » 6 Service Menu » 5 Loops
5 Press “2” to list all loop units located on this loop.
Each loop unit will report communication status:
OK = Answer from the loop unit.
NO ANSWER = No answer from the loop unit.
The cable break is located between the “last” unit reported as OK and the “first” unit
reported as NO ANSWER.
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•
Please refer to the definition of the installed loop in the project specific drawings
to identify the actual location of the addressed "last" and "first" units.
If all units report NO ANSWER the cable is broken before the first loop unit.

Consilium CFD5000 T / CM4.3 Specifications

General

Brand	Consilium
Model	CFD5000 T / CM4.3
Category	Measuring Instruments
Language	English