Atex faults, Single incremental encoder faults and alarms – Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual User Manual

Page 348

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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.

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