Trane Optimus RTHD - More Starter Diagnostics

74
RTHD-SVX01L-EN
Table 21. Starter diagnostics (continued)
Diagnostic Name
Affects
Target
Severity
Persistence
Active Modes
[Inactive Modes]
Criteria
Reset
Level
Starter Contactor
Interrupt Failure
Chiller
Immediate
and Special
Action
Latch
Starter Contactor
not Energized
[Starter Contactor
Energized]
Detected compressor currents greater than 10% RLA on
any or all phases when the compressor was commanded
off. Detection time shall be 5 seconds minimum and 10
seconds maximum. On detection and until the controller is
manually reset: generate diagnostic, energize the
appropriate alarm relay, continue to energize the Evap and
Cond Pump Outputs, continue to command the affected
compressor off, fully unload the effected compressor. For
as long as current continues, perform liquid level and oil
return gas pump control
Local
Starter Did Not
Transition
Chiller Immediate Latch
On the first check
after transition.
The Starter Module did not receive a transition complete
signal in the designated time from its command to
transition. The must hold time from the Starter Module
transition command is 1 second. The Must trip time from the
transition command is 6 seconds. Actual design is 2.5
seconds. This diagnostic is active only for Y-Delta, Auto-
Transformer, Primary Reactor, and X-Line Starters.
Local
Starter Dry Run Test
Chiller Immediate Latch
Starter Dry Run
Mode
While in the Starter Dry Run Mode either 50 % Line Voltage
was sensed at the Potential Transformers or 10 % RLA
Current was sensed at the Current Transformers.
Local
Starter Fault Type I
Chiller Immediate Latch
Starting - Y Delta
Starters Only
This is a specific starter test where 1M(1K1) is closed first
and a check is made to ensure that there are no currents
detected by the CT's. If currents are detected when only 1M
is closed first at start, then one of the other contactors is
shorted.
Local
Starter Fault Type II
Chiller Immediate Latch
Starting All types of
starters
a. This is a specific starter test where the Shorting
Contactor (1K3) is individually energized and a check is
made to ensure that there are no currents detected by the
CT's. If current is detected when only S is energized at
Start, then 1M is shorted. b. This test in a. above applies to
all forms of starters (Note: It is understood that many
starters do not connect to the Shorting Contactor.).
Local
Starter Fault Type III
Chiller Immediate Latch
Starting [Adaptive
Frequency Starter
Type]
As part of the normal start sequence to apply power to the
compressor, the Shorting Contactor (1K3) and then the
Main Contactor (1K1) were energized. 1.6 seconds later
there were no currents detected by the CT's for the last 1.2
seconds on all three phases. The test above applies to all
forms of starters.
Local
Transition Complete
Input Opened
Chiller Immediate Latch
All Running Modes
after transition
completed
The Transition Complete input is open with the compressor
motor running after a successful completion of transition.
This is active only for all electromechanical starters
Local
Transition Complete
Input Shorted
Chiller Immediate Latch Pre-Start
The Transition Complete input is shorted before the
compressor was started. This is active for all
electromechanical starters.
Local
Under Voltage
Chiller Normal NonLatch All
a. Average of all monitored Line voltages below - 10% of
nominal or the Under/Overvoltage transformer(s) are not
connected. [Must hold = - 10 % of nominal. Must trip = - 15
% of nominal. Reset differential = min. of 2% and max. of
4%. Time to trip = min. of 1 min. and max. of 5 min.) Design:
Nom. trip: 60 seconds at less than 87.5%, ±2.8% at 200V or
±1.8% at 575V, Auto Reset at 90% or greater.
Remote
Diagnostics