POTENTIAL OPERATING ISSUES
Touchpoint Pro
Pt. No. 2400M2566_1_EN
74
Operating Manual
12 Other Potential Issues
12.1
Batteries Fail to Come Online
Check the battery isolator switch and the battery fuse if the batteries fail to come online when mains power is interrupted.
See the
Touchpoint Pro Technical Handbook
for further information.
12.2
DC-UPS Shows that Batteries are Failing
The backup batteries will deteriorate over time, and their life is partially determined by their ambient local environment. They
should be replaced when periodic inspection of the DC-UPS battery condition indicators show yellow or red.
See the
Touchpoint Pro Technical Handbook
for further information.
12.3
Module Faults
Modules are designed to periodically self-test and will shut down if they detect a fault or suffer a catastrophic failure, and
they will stop communicating on the ring circuit. This will typically be reported as a ring fault in addition to a module fault.
In the event of a module shut-down, modules either side of the faulty module will divert communication from the primary
circuit (Ring A) to the secondary circuit (Ring B), and will report Ring faults. In addition, all commissioned channels on the
faulty module will report a channel fault. The remaining modules and channels will continue to work correctly.
The table extract below is from an actual event log and it shows that Module M23 has failed.
M23
16/11/2015 12:34:52
Module M23
Module M23-Ring
System Fault
o061
16/11/2015 12:34:52
<Ch Tag>
Ring Communication Error
Fault
o062
16/11/2015 12:34:52
<Ch Tag>
Ring Communication Error
Fault
o063
16/11/2015 12:34:52
<Ch Tag>
Ring Communication Error
Fault
o064
16/11/2015 12:34:52
<Ch Tag>
Ring Communication Error
Fault
16/11/2015 12:34:53
System Fault
Ring : Module M22
System Fault
16/11/2015 12:34:53
System Fault
Ring : Module M24
System Fault
Table 16.
Example of a Ring Fault Event Log
The table above indicates that Module M23 to the Ring is causing Ring Communication Errors and that the Ring circuits are
broken between Modules M22 and M24. The event display would be similar if the faulty module is the first or last module on
the Ring, but it might also indicate a ring fault between the module and the CCB.
Note
: Channels associated with a faulty module will also be reported as faulty, but these events may be ignored as the
parent module has shut-down and is unable communicate any channel data.
See the
Touchpoint Pro Technical Handbook
for further information, or ask your Service Contact for advice.
12.4
Modules Reporting a Fault
If the system detects a module fault, the fault will be reported on the screen and the module’s LED will change colour to
orange.
If the fault is transient in nature – possibly due to low power supply voltage or to ring communication problems – the module
will return automatically to normal operation when the fault is cleared.
When the system detects a module fault, that module will be set to a safe state. If this happens, the module stops
communicating on the ring and takes its inputs / outputs to the defined ‘safe’ state e.g. it turns off mV bead current and takes
relays to a power-off state.
A failed module will generate ring fault reports, module fault reports and channel fault reports. The channels either side of it
will also report lost communications, but will not be shown as faulty.
See the
Touchpoint Pro Technical Handbook
for further information, or ask your Service Contact for advice.