FEC AFC1200 - Manual (Page 14)

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P For a standard two-step operation the System will fasten to 1ST TORQUE/ANGLE
during the specified 1ST STEP time. Once either SPEED CHANGE TORQUE or
1st TORQUE/ANGLE is reached, the System will switch to the specified TORQUE
SPEED (SECTION 6.3). When all fasteners have reached 1ST TORQUE/ANGLE,
the spindles will synchronize and fasten simultaneously until the desired bolt stretch
has been reached, within the specified FINAL STEP time. Once CROSSOVER
AREA is attained or exceeded the actual elongation area is compared to the
calculated elongation area When the actual elongation area is equal to or greater
than the calculated elongation area the proper bolt stretch has been obtained.
NOTES: Setup for Torque and Angle control items are detailed in their
respective sections.
Yield control method can not be configured properly without first
performing extensive testing on the joint.
Start point of AREA YIELD Method. Set based
upon extensive testing CROSSOVER AREA (TORQUE/ANGLE)
Compensation factor for calculated bolt stretch.
Set based upon extensive testing CONSTANT
Expected torque rate of fastener when proper bolt
stretch has been obtained. Set based upon
extensive testing YIELD RATE
Engineered fastener rotation into yield
specification. Automatically set when "LENGTH"
is set ANGLE
Engineered fastener permanent elongation
specification. Automatically set when "ANGLE" is
set LENGTH
Fastener specification SCREW PITCH
RECOMMENDATION FUNCTION
Chapter 6: Fastening Instructions
Page 6-14