{TAIL ~ The motor drive fail operating mode} is {HEAD ~ a mode} where the motor drive 105, or a portion thereof, fails 
{ TAIL ~ The motor drive fail operating mode } is { HEAD ~ a mode } where the motor drive 105 , or a portion thereof , fails
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH