FEC AFC3000, Hardware Operation Manual

Page: 195 / 294

Chapter 7 Fastening Instructions
PAGE 7-28
<Final Torque Check – Torque Control>
Torque checking is a continuous process whenever the System is operating. Final Torque Check uses
the torque value detected at the completion of Fastening.
Note: Typically, Final Torque Check should only be used in Torque Control when Torque Recovery
function is used and may be disabled if Torque Recovery is not used.
P
In Torque Control method the Final Torque High and Low Limits are only selectable when Torque
Recovery is enabled and are typically set based upon the engineering specification for that specific
fastener.
TORQUE CONTROL – TORQUE RECOVERY ENABLED
REJECT TYPE CAUSES
FINAL TORQUE HIGH LIMIT
Excessive chatter of the torque signal due to slip stick friction.
Incorrect parameter set-up.
FINAL TORQUE LOW LIMIT
Loss of torque during Torque Recovery function
Reject condition caused by another monitor item reject.
Snug Torque
Standard Torque
Ramp Down Start Torque
1
st
Torque
2
nd
Torque
Torque
Time Only
Peak Torque High Limit
Peak Torque Low Limit
1
st
Time
2
nd
Time
Final Torque High Limit
Final Torque Low Limit
Torque Recovery Time