Rockwell Automation 20A PowerFlex 70EC/700VC - Manual (Page 48)

44 Faults
Fault Code/Text [Fault Code x]
The fault code for each entry can be read in its respective read-only parameter.
When viewed with a HIM, only the fault code (not text) is displayed. If viewed via
a DPI peripheral (communications network), the queue is not accessed through
parameters, and a text string of up to 16 characters is also available.
Fault Time [Fault x Time]
The drive has an internal drive-under-power timer that increments in value over the
life of the drive and is saved in nonvolatile storage. Each time the drive is powered
down and then repowered, the value of this timer is written to [Power Up Marker],
parameter 242.
The time is presented in xxx.yyyy hours (4 decimal places). Internally it will be
accumulated in a 32-bit unsigned integer with a resolution of 0.35 seconds,
resulting in a rollover to zero every 47.66 years.
The time stamp value recorded in the fault queue at the time of a fault is the value of
internal drive under power timer. By comparing this value to the [PowerUp
Marker], it is possible to determine when the fault occurred relative to the last drive
power-up.
Power Up Marker
This is a copy of the factory “drive under power” timer at the most recent power-up
of the drive. It is used to provide relevance of [Fault x Time] values with respect to
the power-up of the drive.
Resetting or Clearing a Fault
A latched fault condition can be cleared by the following:
1. An off to on transition on a digital input configured for fault reset or stop/reset.
2. Setting [Fault Clear] to “1.”
3. A DPI peripheral (several ways).
4. Performing a reset to factory defaults via parameter write.
5. Cycling power to the drive such that the control board goes through a power-up
sequence.
Resetting faults will clear the faulted status indication. If any fault condition still
exists, the fault will relatch and another entry made in the fault queue.
Clearing the Fault Queue
Performing a fault reset does not clear the fault queue. This can be done from a
menu selection of the HIM or from a DPI command through the communications
port.
Fault Configuration
The drive can be configured such that some conditions do not trip the drive.
[Fault Config 1] is a 16 bit parameter enabling or disabling specific fault conditions
(see below).