FEC AFC1500 - Manual (Page 110)

Chapter 6: Fastening Instructions
Page 6-24
6.5 Torque Recovery
The Torque Recovery function is used when the potential for joint relaxation and interaction exists.
Under this control method, the fasteners are secured to Standard Torque, and then held at a pro-
grammed value for a programmed period of time. This time setting can be between 0.5 - 5.0
seconds. Power is applied to the motor for this duration “holding” torque at the specified STD (Stan-
dard) Torque. During Torque Recovery the tool will use Torque Speed as its maximum Speed, but
will only rotate as a result of a drop in the Torque. Torque Recovery is only available in Torque Con-
trolled Fastening due the fact that the use of Torque Recovery may cause addition rotation (Angle) of
the fastener.
WARNING: The Torque Recovery function will cause the motor to heat up at a rate faster than
normal fastening due to high amperage draw. Particular attention to minimized duty cycle is
recommended if using this function or premature motor failure could result. Torque Recovery
time should be kept to a minimum for the application requirements.
FIG. 6-5 Torque Recovery
Snug Torque
Standard Torque
Threshold Torque
Speed Change Torque
1 st Torque
Crossover Torque
Torque
Time Only
Peak Torque High Limit
Peak Torque Low Limit
1 st Time Final Time
Final Torque High Limit
Final Torque Low Limit
Torque Recovery Time