Trane Optimus RTHD - More Starter Diagnostics

Diagnostics
74 RTHD-SVX01K-EN
Starter Diagnostics
Table 24. Starter diagnostics
Diagnostic
Name and
Source
Affects
Target Severity Persistence
Active Modes
[Inactive
Modes] Criteria
Reset
Level
AFD Drive Fault Chiller Immediate NonLatch All The AFD Drive Fault Relay is open Local
At Speed Input
Opened
Chiller Immediate Latch
All Running Modes
after At Speed
proven
The “At Speed” input was found to be opened with the
compressor motor running after successfully obtaining
an at speed and bypassed condition. This is active for
solid state starters and AFD
Local
At Speed Input
Shorted
Chiller Immediate Latch Pre-Start
The “At Speed” input is shorted before the compressor
was started. This is active for solid state starters and
AFD.
Local
Compressor Did
Not Accel:
Transition
Chiller Warning Latch Start Mode
"The compressor did not come up to speed (get 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. Note: Since RTHD SSS has no forced
transition capability, this info warning can be followed
with a “Compressor did not accelerate fully ” diagnostic
above and an aborted start."
Remote
Compressor Did
Not Accelerate
Fully
Chiller Immediate Latch Start Mode
" The starter module did not receive an “Up to Speed”
or “End of Ramp” signal from the SSS within 2.5
seconds after commanding a bypass, or after the
maximum acceleration time had expired, whichever is
longer. This diagnostic only applies to SSS/AFD."
Local
Compressor Did
Not Accelerate:
Shutdown
Chiller Immediate Latch Start Mode
The compressor did not come up to speed (get to
<85%RLA) in the allotted time defined by the Maximum
Acceleration Timer and the start was aborted per the
starter configuration selected.
Remote
Momentary
Power Loss
Chiller Immediate Nonlatch
All compressor
running and
stopping modes [all
compressor starting
and non-running
modes]
"Momentary Power Loss option disabled: No effect.
Momentary
Power Loss
option enabled:
A loss of power
on three line
cycles or more
was detected.
Diagnostic is
reset in 30
seconds.
See Momentary
Power Loss
Protection
specification for
additional
information."
Remote
Motor Current
Overload
Chiller Immediate Latch Chiller Energized
"Compressor current exceeded overload time vs. trip
characteristic. For Water Cooled products Must trip =
112% RLA, Must hold=102%, nominal trip 107% in 20
seconds"
Local
Over Voltage Chiller Normal NonLatch All
"a. Average of all monitored Line voltages above + 10%
of nominal. [Must hold = + 10 % of nominal. Must trip
= + 15 % of nominal. Reset differential = min. of 2%
and max. of 4%. Time to trip = minimum of 1 min. and
maximum of 5 min.) Design: Nom. Trip: 60 seconds at
greater than 112.5%, + or – 2.5%, Auto Reset at 109%
or less."
Remote