Yaskawa Portable Control Display Unit - Manual (Page 21)

5 FAULT MENU
15 Fault (FLT) Menu
01/22/96
FAULT (FLT)
MENU
The drive has two methods available to
report errors. Each error condition may
utilize ONE or BOTH of the reporting
methods.
1. The FAULT LIST
The most conventional method is called
“fault recording”. If this method is enabled
for a particular error, the red FAULT LED
will light, and a unique fault code will
appear on the Standard Control Display
Unit (display on drive) at the moment the
error occurs.
Each occurrence of a fault is recorded in an
area in RAM called the FAULT LIST. The
FAULT LIST stores the 16 OLDEST faults
and stops recording faults as soon as the
16th fault occurs. This list is erased
whenever the drive is powered down or
reset. Whether or not the drive stops or
continues to run is dependent on the way
the particular fault is implemented within
the PAC diagram. Most standard faults are
set up so that the drive will stop if a fault
occurs.
2. The ERROR LIST
The second method for error handling is
called “error recording”, and will produce
an ERROR LIST. Error recording differs
from fault recording in three aspects. First,
the error will not be shown on the
Standard Control Display Unit, and the red
FAULT LED will not light at the moment
the error occurs. Second, the ERROR
LIST stores the 16 MOST RECENT errors,
and always overwrites the oldest errors
with the newest errors. Third, this list is