Safe Torque Off
6-31
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames E & F
DANGER
IF KA1 IS DE-ENERGISED, DO NOT ACCESS THE MACHINE AS A FAULT MAY BE PRESENT.
THE USER MUST RESOLVE THE DETECTED FAULT BEFORE RELYING FURTHER ON THE STO
FEATURE. FAILURE TO DO SO COULD RESULT IN STO NOT BEING ACHIEVABLE, AND THUS
THE MOTOR MAY ROTATE UNEXPECTEDLY AND COULD RESULT IN INJURY, DEATH OR
DAMAGE. PARKER SSD DRIVES WILL NOT ACCEPT ANY LIABILITY FOR FAILURE TO DO THIS
OR FOR ANY CONSEQUENTIAL LOSS OR DAMAGE.
Note: if either of the delayed OFF output contacts in the Safety Control Unit open while the motor is
rotating, the motor will coast to rest (unless external forces act on it).