Main Processor Diagnostics - Trane Ascend ACR Series Installation, Operation And Maintenance Manual

Table 26. Diagnostics — AFD (continued)
Diagnostic
Affects
Name and
Target
Source
AFD 2A Gate
Circuit
Kill Active
AFD 1A Input
Transformer or
Circuit
Filter High
Temp
AFD 2A Input
Transformer or
Circuit
Filter High
Temp
AFD 1A Low
Rotor Flux Circuit
Feedback
AFD 2A Low
Rotor Flux Circuit
Feedback

Main Processor Diagnostics

Table 27. Diagnostics — main processor
Affects
Diagnostic
Target
Name
Drive Cooling
Temp Sensor – Circuit
Ckt2
BAS
Communica- None
tion Lost
BAS Failed to
Establish
None
Communica-
tion
AC-SVX001A-EN
Severity
Persistence
Immediate NonLatch
Immediate
Latch
Shutdown
Immediate
Latch
Shutdown
Immediate
Latch
(decel)
Immediate
Latch
(decel)
Severity
Persistence
Normal Latch
Special Action
NonLatch
Special Action
NonLatch
Active
Modes
[Inactive
Modes]
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
All
separate HPC diagnostic will occur in conjunction
with this diagnostic – see details of the Main
Processor Diagnostic "High Pressure Cutout" below
The AFD is tripped by Input Transformer or Filter
All
High Temperature Cutout.
The AFD is tripped by Input Transformer or Filter
All
High Temperature Cutout.
The estimated rotor flux dropped below the minimum
Running
threshold. Suspect motor demagnetization.
The estimated rotor flux dropped below the minimum
Running
threshold. Suspect motor demagnetization.
Active
Modes
[Inactive
Modes]
All
The BAS was setup as "installed" at the MP and the
Lontalk LCIC lost communications with the BAS for
15 contiguous minutes after it had been established.
Refer to Section on Setpoint Arbitration to determine
how setpoints and operating modes may be affected
by the comm loss. The chiller follows the value of the
Tracer Default Run Command which can be
All
previously written by Tracer and stored nonvolatilely
by the MP (either use local or shutdown). Note that
this diagnostic is never operational for BacNet
Communication interface (BCIC) and only
operational with a LonTalk Communication interface
(LCIC) if so configured by the BAS or Tracer system.
The BAS was setup as "installed" and the BAS did not
communicate with the Lontalk LCIC within 15
minutes after chiller controls power-up. Refer to
Section on Setpoint Arbitration to determine how
At power-up setpoints and operating modes may be effected.
Note that this diagnostic is never operational for
BacNet Communication interface (BCIC) and only
operational with a LonTalk Communication interface
(LCIC) if so configured by the BAS or Tracer system.
D D i i a a g g n n o o s s t t i i c c s s
Criteria
(that is latching).
Criteria
Bad Sensor or LLID.
Reset
Level
Local
Local
Local
Local
Local
Reset
Level
Remote
Remote
Remote
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