FEC AFC1100 User Manual
Page 10
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6.3
Speed Functions
The AFC1100 System is user-programmable for operations involving multiple speed settings.
The use of multiple speeds during the fastening process aids in socket engagement,
achieving cycle time, and controlling the applied torque during all stages.
SPEED
TIME
INITIAL TIME
FREE RUN
SPEED
SLOW DOWN
SPEED [80]rpm
TORQUE SPEED
[40]rpm
[200]rpm
FREE RUN TURN
[2.0] sec
INITIAL SPEED
[40]rpm
[10.0] rev
FIG. 6-3a Speed Functions
{ The System will run at INITIAL SPEED for the time specified by the setting of INITIAL
TIME.
{ Once INITIAL TIME has elapsed, the System will switch to FREERUN SPEED (High Speed
Rundown) for the number of revolutions specified by FREERUN REVOLUTIONS. If the
System has been set up properly, the nutrunner will shift to SLOWDOWN SPEED before
seating the fastener. The nutrunner will run at SLOWDOWN SPEED until either 1st
TORQUE/ANGLE is reached or until 1st STEP TIME expires. If 1st STEP TIME expires
before reaching 1st TORQUE/ANGLE, the System will output a Time Over reject.
NOTE: The System will shift to TORQUE SPEED if either SPEED CHANGE TORQUE or
1st TORQUE/ANGLE is sensed, no matter which step is being performed.
{
FINal torque speed to which the nutrunner will shift once 1st
TORQUE/ANGLE or SPEED CHANGE Torque is reached. SET based
upon the joint type to allow for a controlled final fastening. LESS THAN
50 RPMs.
TORQUE SPEED
FIRSt torque fastening speed. SET based upon the joint type to allow
for a controlled seating. LESS THAN 150 RPMs.
SLOWDOWN SPEED
Set based upon cycle time requirements. THIS speed is used to run
down the bolt quickly.
FREERUN SPEED
FOR joints that do not react properly to high speed seating, the freerun
time should be calculated to eliminate the "crash" effect.
FREERUN
REVOLUTIONS
SET to the rpm which will allow for easy socket to fastener
engagement.
INITIAL SPEED
SET to a duration which will provide sufficient time for the socket to
fastener engagement. set in seconds.
INITIAL TIME
RECOMMENDATION
FUNCTION
Chapter 6: Fastening Instructions (Rev. 1/98)
Page 6-10