72
RLC-SVX09Q-EN
Table 31. Starter diagnostics (continued)
Diagnostic
Name
Affects Target Severity
Persistence
Active Modes
[Inactive
Modes]
Criteria
Reset
Level
Phase Loss - xy Cprsr
Immediate Latch
Start Sequence
and Run modes
a) No current was sensed on one or two of the current
transformer inputs while running or starting (See Non-
latching Power Loss Diagnostic for all three phases lost
while running). Must hold = 20% RLA. Must trip = 5% RLA.
Time to trip shall be longer than guaranteed reset on Starter
Module at a minimum, 3 seconds maximum. Actual design
trip point is 10%. The actual design trip time is 2.64
seconds. b) If Phase reversal protection is enabled and
current is not sensed on one or more current transformer
inputs. Logic will detect and trip in a maximum of 0.3
seconds from compressor start.
Local
Phase Reversal -
xy
Cprsr
Immediate Latch
Compressor
energized to
transition
command
[All Other Times]
A phase reversal was detected on the incoming current. On
a compressor start-up, the phase reversal logic must detect
and trip in a maximum of 0.3 second from compressor start.
Local
Power Loss - xy Cprsr
Immediate NonLatch
All compressor
running modes
[all compressor
starting and non-
running modes]
The compressor had previously established currents while
running and then all three phases of current were lost.
Design: Less than 10% RLA, trip in 2.64 seconds. This
diagnostic will preclude the Phase Loss Diagnostic and the
Transition Complete Input Opened Diagnostic from being
called out. To prevent this diagnostic from occurring with
the intended disconnect of main power, the minimum time
to trip must be greater than the guaranteed reset time of the
Starter module. Note: This diagnostic prevents nuisance
latching diagnostics due to a momentary power loss – It
does not protect motor/compressor from uncontrolled
power reapplication. See Momentary Power Loss
Diagnostic for this protection. This diagnostic is not active
during the start mode before the transition complete input is
proven. Thus a random power loss during a start would
result in either a “Starter Fault Type 3” or a “Starter Did Not
Transition” latching diagnostic.
Remote
Severe Current
Imbalance - xy
Circuit Immediate Latch
All Running
Modes
A 30% Current Imbalance has been detected on one phase
relative to the average of all 3 phases for 90 continuous
seconds.
Local
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
Communications Loss Time bound setpoint.
Local
Diagnostics
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