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8.4.7 Extended Fault Information
As stated in the above section the Position Controller fault may come from different sources. A
Status word can be viewed using the GUI Utilities/Edit Variables On Line feature. The below table
gives the meaning of each bit in the Status word.
Fault Code
Status Bit
16
1
SFD UART
2
Error
3
17
4
SFD Comm
Error
5
6
7
3
8
Drive
9
Over/Under
9
10
Motor l-l or
l-n Short
11
18
12
Option Card
13
Watch Dog
Time out
19
14
PosErr Too
Large
15
20
16
OC Fault
50
Extended fault
SFD UART parity error
SFD UART overrun error
SFD UART framing error
SFD Frame timeout
SFD transfer incomplete
SFD CRC error(s)
SFD Motor Data timeout
Drive over temperature
Drive under temperature
Drive short circuit
Drive output over current
Option card read timeout
Option card watchdog time
out
Step size overflow
PosErr overflow
Option Card Feedback
Fault
Definition
The SFD UART received a parity error.
The SFD UART received a second transfer
without reading the first.
SFD UART stop bit was not the correct polarity.
Indicates that more then 89.6 uSecs has elapsed
since last frame was received.
Indicates that a transfer started but did not
complete in 18.4 microseconds.
In SFD Span mode, this indicates that there was
more then one CRC error over 256 transfers. If
not in SFD Span mode, any CRC error will fault.
SFD configuration did not complete within 49.2
milliseconds.
The drive has an over temperature fault
The drive has an under temperature fault
One or both the current sensor A/D has been in
positive current saturation for longer then 10
microseconds.
Drive over current
OC response time out
OC Watchdog timer timed out
Size of revs per step greater than 255 revs per
step.
Position loop position error greater then +/-128
revs.
Fault with the option card encoder feedback
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