11 February 2022
Wiring the ATS22 with S6U suffix, for 2-wire control.
All Altistart 22's ending with S6U suffix (120V)
Basic wiring examples
The S6U requires constant 120VAC to terminals CL1 (hot) and CL2 (neutral).
For a freewheel stop:
Connect a jumper from Terminal LI1 to LI2.
Connect a jumper from Terminal CL2 to COM.
Close a dry contact between Terminals CL1 and LI2 for a run forward. Open this connection for a freewheel stop.
For a controlled stop:
Do not jumper LI1 to LI2, wire LI1 to CL1, use run contact between CL1 and LI2, and program SEt - dEC = ramp down time.
Note: The factory default setting for the dEC parameter is 'free'. Leaving this parameter set to 'free' will provide a freewheel stop, regardless of which way LI1 and LI2 are wired. (This is why the Quick Start Guide shows a wiring diagram similar to the one above and indicates that it allows a freewheel stop.) Conversely, removing voltage from LI1 will result in a freewheel stop, regardless of the value set for dEC. In other words, a freewheel stop can be accomplished by wiring and/or programming.
Refer to the ATS22 User manual, ATS22 Quick Start Guide, or the Quick Start Annex for more information.