Diagnostics
RLC-SVU05A-E432
Diagnostic Name
and Source
Affects
Ta r g e t
Severity Persistence
Active Modes
[Inactive Modes]
Criteria Reset Level
Transition Complete
Input Opened -
Compressor 1A
*Circuit Immediate
Latch
All running modes The Transition Complete input was found to be opened
with the compressor motor running after a successful
completion of transition. This is active only for Y-Delta,
Auto-Transformer, Primary Reactor, and X-Line Starters.
To prevent this diagnostic from occurring as the result of
a power loss to the contactors, the minimum time to
trip must be greater than the trip time for the power
loss diagnostic.
Local
Transition Complete
Input Opened -
Compressor 2A
*Circuit Immediate
Latch
All running modes The Transition Complete input was found to be opened
with the compressor motor running after a successful
completion of transition. This is active only for Y-Delta,
Auto-Transformer, Primary Reactor, and X-Line Starters.
To prevent this diagnostic from occurring as the result of
a power loss to the contactors, the minimum time to
trip must be greater than the trip time for the power
loss diagnostic.
Local
Motor Current
Overload -
Compressor 1A
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
Motor Current
Overload -
Compressor 2A
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 -
Compressor 1A
Chiller 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 second
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 Pump Output, 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.
Local
Starter Contactor
Interrupt Failure -
Compressor 2A
Chiller 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 second
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 Pump Output, 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, oir return, and fan control on the
circuit effected.
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 cont secs.
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 cont secs.
Remote
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