Emerson FM-3 - Manual (Page 242)

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FM-3 Programming Module Reference Manual
Fault Descriptions
Flash Invalid
This fault indicates that the firmware checksum has failed. Use the Tools Program Flash
menu item from PowerTools to reprogram/upgrade the firmware stored in flash memory. If
this problem persists, call Control Techniques. A common cause would be an interrupted F/
W Flash upgrade (cable disconnected during an upgrade process).
Watchdog Timer
The watchdog timer ensures that the firmware is operating normally. If the firmware fails to
reset this timer every 10 ms, the drive hardware will be reset, all inputs and outputs will be
cleared (“Off”), and a Watchdog Timer fault is generated.
Power Up Test
This fault indicates that the power-up self-test has failed. This fault cannot be reset with the
reset command or reset button.
NVM Invalid
At power-up the drive tests the integrity of the non-volatile memory. This fault is generated
if the contents of the non-volatile memory are invalid.
Max Following Error
Reset Button or Input
Line
Yes Following Err
Travel Limit +/- Auto No
TravLmtMinus
TravLmtPlus
All "On"
Normally on for one
second during power up
Yes
FM-3
** Fault **
***** Depend on Fault
Segment Display Fault Action to Reset Bridge Disabled FM-3 Display