Emerson FM-3 manual Isr Ovr, Traj Flt, Drv Syn, Watchdg, Overspd, Inv Cfg, Shnt Pw

FM-3 Programming Module Reference Manual

Isr Ovr

This fault is generated when a module flash memory problem occurs. If problem is persistent, replace the FM-4 module.

Traj Flt

This fault occurs when the drive has received trajectory data from the FM-3 module that indicates a problem. Check the user units, velocities, accels and decels for correct values.

Drv Syn

This fault occurs when the drive loses timing with the attached FM-3. This issue is generally caused by either a trajectory update rate that is too low (800 or 1200usec), or a processor heavy program causes the program functions to

Watchdg

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.

Overspd

This fault occurs when the actual motor speed exceeds the Overspeed Velocity Limit parameter. This parameter can be accessed with PowerTools Pro software.

Inv Cfg

The FM module was not on this drive during its previous power-up and it is not known if the setup data in the FM module matches the drive and motor combination to which the FM module is now attached.

This can also happen when a FM module is removed from a drive and the drive is powered- up.

To reset the fault, create or open a configuration file with the correct drive and motor selections and download the configuration to the FM or drive. If you are certain that the setup data in the FM or drive matches the system configuration, press and hold the drive's Reset button for 10 seconds (until the fault is cleared).

Shnt Pw

This fault is generated when RMS shunt power dissipation is greater than the design rating of the internal shunt.

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