RLC-SVX09Q-EN
71
Diagnostics
General Diagnostics Information
Diagnostic Name and Source: Name of Diagnostic and
its source. Note that this is the exact text used in the User
Interface and/or Service Tool displays.
Affects Target: Defines the "target" or what is affected by
the diagnostic. Usually either the entire Chiller, or a
particular Circuit or Compressor is affected by the
diagnostic (the same one as the source), but in special
cases functions are modified or disabled by the diagnostic.
"None" implies that there is no direct affect to the chiller,
sub components or functional operation.
Design Note: Functions that are affected by a diagnostic
are simply reported as "chiller or circuit x" targets in
Tracer® TU and on the Alarms page of the AdaptiView™
display, even though only a specific function and not the
entire circuit or chiller would be effected.
Severity: Defines the severity of the above effect.
Immediate means immediate shutdown of the affected
portion, Normal means normal or friendly shutdown of the
affected portion, Special Action means a special action or
mode of operation (limp along) is invoked, but without
shutdown, and Info means an Informational Note or
Warning is generated. Design Note: Tracer TU does not
support display of "Special Action", on its Diagnostics
pages, so that if a diagnostic has a special action defined in
the table below, it will be displayed only as "Informational
Warning" as long as no circuit or chiller shutdown results. If
there is a shutdown and special action defined in the table,
then the Tracer TU Diagnostics Page display will indicate
the shutdown type only.
Persistence: Defines whether or not the diagnostic and its
effects are to be manually reset (Latched), or can be either
manually or automatically reset when and if the condition
returns to normal (Nonlatched).
Active Modes [Inactive Modes]: States the modes or
periods of operation that the diagnostic is active in and, as
necessary, those modes or periods that it is specifically
"not active" in as an exception to the active modes. The
inactive modes are enclosed in brackets, [ ]. Note that the
modes used in this column are internal and not generally
annunciated to any of the formal mode displays.
Criteria: Quantitatively defines the criteria used in
generating the diagnostic and, if nonlatching, the criteria for
auto reset.
Reset Level: Defines the lowest level of manual diagnostic
reset command which can clear the diagnostic. The
manual diagnostic reset levels in order of priority are: Local
or Remote. For example, a diagnostic that has a reset level
of Remote, can be reset by either a remote diagnostic reset
command or by a local diagnostic reset command.
Starter Diagnostics
Table 31. Starter diagnostics
Diagnostic
Name
Affects Target Severity
Persistence
Active Modes
[Inactive
Modes]
Criteria
Reset
Level
Compressor Did
Not Accelerate:
Shutdown - xy
Cprsr
Immediate Latch
Cprsr
Accelerating
Acceleration Time Out Action set to Shutdown: Compressor
motor current did not drop below 85% RLA within the
Maximum Acceleration Setting setpoint. Compressor motor
de-energized. See Current Overload Protection
specification.
Local
Compressor Did
Not Accelerate:
Transition - xy
Cprsr Warning
Latch Start Mode
The compressor did not come up to speed (fall to <85%
RLA) in the allotted time defined by the Maximum
Acceleration Timer and a transition was forced (motor put
across the line) at that time. This applies to all starter types.
Remote
Motor Current
Overload - 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
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
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