- 101 -
FAULT INDICATOR CODES
Following is a list of fault diagnostic indicators.
(O)
Watch Dog Timer Fault
The drive has a 0.002 second timer that if not internally reset by software, will
shut down the operation of the computer. If there is a problem, a “O” is indicated
on the diagnostics display on the drive.
POSSIBLE CAUSES OF THE FAULT
1.
INCORRECT AC LINE VOLTAGE (SPEC 96 – 132 VAC) FOR
SINGLE PHASE DRIVES. (196 – 264 VAC) FOR 3 PHASE DRIVES.
This can be caused by excessive AC line voltage or line voltage transients. The
AC line voltage must be within specified range to avoid “false triggering” of this
fault indicator.
2.
NOISE ON THE AC LINES
3.
NOISE ON THE I/O LINES
4.
POOR (OR NO) GROUNDING
5.
LACK OF NOISE SUPPRESSOR ON COILS AND RELAYS
(I)
AVG Current Fault
The drive monitors the current required to move the load. When the average
current is greater than the continuous current rating of the drive for more than 1.5
to 5 seconds (see chart below), the drive will shut down and display a “1” fault on
the diagnostic display on the drive. If you are producing (1) faults, you must
determine what the excess load is and correct it. Excess load can be caused by
friction, inertia or cycle times, or a combination of all of these. Continuous
resetting of (1) faults without implementing correction will lead to (2) faults
which could be catastrophic.
POSSIBLE CAUSES OF THE FAULT
1.
THE LOAD ON THE MOTOR IS TO LARGE.
2.
MECHANICAL BINDING OF THE MACHINE.
3.
MOTION INDEXES ARE EXCEEDING THE DRIVE RATING.
Table XI
Load Coupling
% Of Continuous
Current
Single Phase Models
Approximate Time
Before “1” Fault
3 Phase Models
Approximate Time
Before “1” Fault
100 (Continuous)
No Fault
No Fault
120
5 Sec
3.2 Sec
140
3 Sec
1.9 Sec
160
2 Sec
1.3 Sec
180
1.8 Sec
1.2 Sec
200 (Peak)
1.5 Sec
1.0 Sec
(2)
Shorts Fault
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com