Trane Technologies RTAG 225, Installation Operation & Maintenance

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Diagnostic Name
and Source
Affects
Target
Severity Persistence Active Modes
[Inactive Modes]
Criteria Reset
Level
Motor Current Over-
load - xy
Circuit Immediate Latch Cprsr Energized Compressor current exceeded overload
time vs. trip characteristic. Must trip =
140% RLA, Must hold=125%, nominal
trip 132.5% in 30 seconds
Local
Starter Contactor
Interrupt Failure -
xy
Chiller Immediate
and Special
Action
Latch Starter Contac-
tor not Energized
[Starter Contactor
Energized]
Detected compressor currents great-
er than 10% RLA on any or all phases
when the compressor was commanded
off. Detection time shall be 5 second
minimum and 10 seconds maximum.
On detection and until the controller is
manually reset: generate diagnostic, en-
ergize the appropriate alarm relay, con-
tinue to energize the Evap Pump Output,
and continue to command the affected
compressor off, fully unload the effected
compressor and command a normal stop
to all other compressors. For as long as
current continues, perform liquid level,
oil return, and fan control on the circuit
effected. During contactor interrupt fail-
THR unit sequence should continue run-
ning. If THR turns off due to a diagnostic
or lockout during contactor interrupt
failure, the circuit reverts to air-cooled
condenser fan control within 1 second.
Local
Over Voltage Chiller Normal NonLatch Pre-Start and Any
Ckt(s) Energzd
Nom. trip: 60 seconds at greater than
112.5%, ± 2.5%, Auto Reset at 110%
or less for 10 continuous seconds.
Remote
Under Voltage Chiller Normal NonLatch Pre-Start and Any
Ckt(s) Energzd
Nom. trip: 60 seconds at less than
87.5%, ± 2.8% at 200V ± 1.8% at
575V, Auto Reset at 90% or greater for
10 continuous seconds.
Remote
Starter Comm Loss:
Main Processor - xy
Cprsr Immediate Latch All The Starter module detected a continual
loss of communication with the main
processor for greater than the Commu-
nications Loss Time bound setpoint.
Local
Starter Module
Memory Error Type
1 - xy
Cprsr Warning Latch All Checksum on RAM copy of the Starter
recalled from EEPROM.
Local
Starter Module
Memory Error Type
2 - xy
Cprsr Immediate Latch All Checksum on EEPROM copy of the Start-
-
PROM.
Local
Diagnostic Name Affects
Target
Severity Persistence Active Modes
[Inactive Modes]
Criteria Reset
Level
MP: Reset Has Oc-
curred
Platform Warning NonLatch All The main processor has successfully
come out of a reset and built its appli-
cation. A reset may have been due to
a power up, installing new software or
-
diately and automatically cleared and
thus can only be seen in the Historic
Diagnostic List in Tracer TU.
Remote
Unexpected Starter
Shutdown - xy
Cprsr Normal NonLatch All Cprsr Running
modes, Starting,
Running and Pre-
paring to Shutdown
The Starter module status reported back
that it is stopped when the MP thinks
it should be running and no Starter
diagnostic exist. This diagnostic will
be logged in the active buffer and then
automatically cleared. This diagnostic
could be caused by intermittent com-
munication problems from the Starter to
the MP, or due to mis-binding
RTAG-SVX001H-EN 83
Local
Table 38.