Cause : Operating conditions do not exist comes when the "in operation [IOP]" checkback signal was missing when a traversing command was initiated. The following causes inhibit the "in operation" checkback signal.

-Control signals [OFF1], [OFF2], [OFF3] and/or "enable controller" [ENC] are not activated.
-Checkback signals [OFF2] and/or [OFF3] are not activated.
-A fault [FAULT] is active.

1. Activate control signals [OFF1], [OFF2], [OFF3] and "enable controller" [ENC].
2. If checkback signals [OFF2] and/or [OFF3] are missing,
3. Check the supply of control word 1 (MASTERDRIVES function diagram, sheet 180).