Atex faults, Single incremental encoder faults and alarms – Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual User Manual
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348
Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Chapter 6
Troubleshooting
ATEX Faults
The table below lists the ATEX-specific fault, the action taken when the drive
faults, and its description.
Table 20 - ATEX Fault Types, Descriptions and Actions
Single Incremental Encoder
Faults and Alarms
The table below contains a list of encoder-specific faults and alarms, the type of
fault or alarm, the action taken when the drive faults, the parameter used to
configure the fault or alarm (if applicable), and a description and action (where
applicable).
Table 21 - Single Incremental Encoder Fault and Alarm Types, Descriptions and Actions
Event
No.
(1)
Fault/Alarm Text
Type
Fault
Action
Configuration
Parameter
Auto
Reset
Description/Action(s)
xx011
PTC Over Temp
Resettable
Fault
Coast
An over-temperature condition has been detected in the motor, or the
sensor path has been broken.
xx012
PTC ShortCircuit
Resettable
Fault
Coast
A short circuit condition has been detected in the sensor path. If unable
to clear fault be sure the thermal sensor connected is a PTC type and not
a thermostatic type.
xx013
ATX VoltageLoss
Resettable
Fault
Coast
Possible hardware damage.
The motor to the thermal sensor is shorted.
Excessive EMC noise due to improper grounding/shielding.
xx014
ThermostatOvrTmp
Resettable
Fault
Coast
An over-temperature condition has been detected in the motor, or the
sensor path has been broken.
(1)
xx
indicates the port number where the ATEX option is installed.
Event
No.
(1)
Fault/Alarm Text
Type
Fault
Action
Configuration
Parameter
Auto
Reset
Description/Action(s)
xx000
Open Wire
Configurable
P3
[Fdbk Loss Cfg]
The encoder module has detected an input signal (A, B, or Z) in the same
state as its complement (A Not, B Not, or Z Not). For open wire detection
to work, the encoder signals must be differential (not single ended). The
Z channel is only checked when enabled. See P1 [Encoder Cfg].
xx001
Phase Loss
Configurable
P3
[Fdbk Loss Cfg]
More than 30 phase loss (open wire) events have occurred over an 8
millisecond time period. The same restrictions as for Open Wire
detection apply.
xx002
Quadrature Loss
Configurable
P3
[Fdbk Loss Cfg]
Quadrature loss events occur when simultaneous edge transitions occur
on both the A and B encoder channels. This fault will occur when more
than 10 quad loss events over a 10 millisecond time period are detected.
Only valid when both A and B channels are used (not Bit 1 “A Chan
Only”) in P1 [Encoder Cfg].
xx058
Module Defaulted
Fault
Coast
Module was commanded to write default values.
(1)
xx
indicates the port number. Refer to
Fault and Alarm Display Codes on page 312
for an explanation.