How do you set up an Automatic Restart on the ATV312 drives?


25 March 2022

Automatic Restart on the ATV312 drives.

Product Line:
Altivar 31 and 312


Wants the drive to do a auto restart in the event a basic fault or power outage. 

This operation will only work if the drive is being controlled in two-wire control through the terminal inputs.

From RDY, press enter, scroll down to FLT menu, and press enter
In the FLT menu scroll down to Atr, press enter, and set to 'Yes' (press enter again to save the change)
Scroll down to FLR [catch on the fly] and set to 'Yes' (press enter again to save the change)
Press ESC back to FLT, scroll down to the I/O menu, and press enter
In the I/O menu scroll and find tCt, press enter, and set to 'LEL' (press enter again to save the change)

Auto Restart, Catch on the Fly, and 2-wire type being 'level' all work hand-in-hand: 
Auto Restart clears a fault (after the condition causing the fault has been corrected).
2-wire type being set to 'level' allows a run command to stay present, and the drive to automatically continue running after a fault has been cleared.
Catch on the Fly enables the drive to 'catch' the motor as it's spinning and continue running the motor. 
This will NOT clear all faults. Safety-related faults must be cleared by power-cycling the drive. Lists of faults that can be cleared with Automatic Restart can be found in your drive's Programming Manual. 

This function is possible with the following conditions:
[NETWORK FAULT] (CnF): Communication detected fault on the communication card
[CANopen com.] (COF): CANopen communication detected fault
[External] (EPF): External fault
[4-20mA] (LFF): 4-20 mA loss
[Overbraking] (ObF): DC bus overvoltage
[Drive overheat] (OHF): Drive overheating
[Motor overload] (OLF): Motor overload
[Mot. phase] (OPF): Motor phase loss
[Mains overvoltage] (OSF): Line supply overvoltage
[Mains phase loss] (PHF): Line phase loss
[MODBUS FAULT] (SLF): Modbus communication