86
AC-SVX001A-EN
Table 26. Diagnostics — AFD (continued)
Diagnostic
Name and
Source
Affects
Target
Severity
Persistence
Active
Modes
[Inactive
Modes]
Criteria
Reset
Level
AFD 1A
Customized
Protection
Fault
Circuit Immediate
Latch
(a)
All
One of drive custom protections has occurred
(Pump-Out Failed, Low Rotor Flux Feedback, or
Bump Failure) OR drive custom protections not
enabled or programmed. Contact Trane Service.
(a)
Local
AFD 2A
Customized
Protection
Fault
Circuit Immediate
Latch
(a)
All
One of drive custom protections has occurred
(Pump-Out Failed, Low Rotor Flux Feedback, or
Bump Failure) OR drive custom protections not
enabled or programmed. Contact Trane Service.
(a)
Local
AFD 1A Ground
Fault
Circuit Immediate Latch All
Measured ground current exceeds ground current
sensitivity. Read drive fault value over Tracer® TU
and refer to drive programming manual to determine
which output leg and transistors are indicated.
Local
AFD 2A Ground
Fault
Circuit Immediate Latch All
Measured ground current exceeds ground current
sensitivity. Read drive fault value over Tracer® TU
and refer to drive programming manual to determine
which output leg and transistors are indicated.
Local
AFD 1A Motor
Shorted
Circuit Immediate Latch All
Motor or power stage is shorted line-to-line. Read
drive fault value over Tracer® TU and refer to drive
programming manual to determine which phases are
indicated.
Local
AFD 2A Motor
Shorted
Circuit Immediate Latch All
Motor or power stage is shorted line-to-line. Read
drive fault value over Tracer® TU and refer to drive
programming manual to determine which phases are
indicated.
Local
AFD 1A Comm
Loss: Main
Processor
Circuit
Immediate
(decel)
Latch All
The AFD detected a continual loss of communication
with the main processor for greater than 10s.
Local
AFD 1A Comm
Loss: Main
Processor
Circuit
Immediate
(decel)
Latch All
The AFD detected a continual loss of communication
with the main processor for greater than 10s.
Local
AFD 1A
Precharge Fault
Circuit Immediate Latch All
The drives internal precharge was commanded to
open while the drive was running. This can occur if
the DC bus drops to a low level.
Local
AFD 2A
Precharge Fault
Circuit Immediate Latch All
The drives internal precharge was commanded to
open while the drive was running. This can occur if
the DC bus drops to a low level.
Local
AFD 1A
General Failure
Circuit
Immediate
(decel)
Latch All
Drive fault other than those supported in this list.
Read drive fault value over Tracer TU and refer to
drive programming manual.
Local
AFD 2A
General Failure
Circuit
Immediate
(decel)
Latch All
Drive fault other than those supported in this list.
Read drive fault value over Tracer TU and refer to
drive programming manual.
Local
AFD 1A Gate
Kill Active
Circuit Immediate NonLatch All
The respective drive’s gate-kill circuitry was
activated (open circuit). The respective compressor’s
High Pressure Cutout Switch is wired into this circuit,
and will cause an immediate shutdown of the drive
and compressor in the event of an HPC trip. A 2nd
separate HPC diagnostic will occur in conjunction
with this diagnostic – see details of the Main
Processor Diagnostic “High Pressure Cutout” below
(that is latching).
Local
DDiiaaggnnoossttiiccss
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