Smart Seating Control Step (Smart SCS)

This step is specialized for joints with increased rundown friction, such as thread cutting, thread forming screws or joints with sideloads from misaligned parts. In these types of applications, it is common with variations from joint to joint. The main goal of this step is to eliminate floating screws and apply the same clamp torque or clamp angle to all joints even though the joints deviate. The step monitors the gradient of the clamp torque over clamp angle and can detect when the screw is seated, that is when the screw head is in contact with the joint surface. From the seating point, the configured clamp torque or clamp angle is applied. The total torque or angle may differ from tightening to tightening but the same amount of clamp torque, or clamp angle, is used to compress the joint. The clamp torque and clamp angle are set to tell the controller what it should expect after detecting a seating. (The seating detection is calculated based on these values.) A detected seating point can be rejected if the torque gradient falls too low during the tightening. It will then be regarded as a false seating point and will continue to search for another seating point.

This step type allows lower target torque and higher speeds than what the tool is calibrated for. This means that you may sometimes not get the desired results. If this happens, try to change the speed in order to get a more desired clamp value.

A	Peak torque
B	Peak torque
C	Seating point
D	Seating point
E	Clamp torque
F	Clamp torque
G	Clamp angle
H	Clamp angle

Speed	The tool speed is programmable within the valid range.
Final tightening method	Decides if the tightening should use clamp torque or clamp angle as target.
Clamp torque	Expected clamp torque for the tightening.
Clamp angle	Expected clamp angle for the tightening.
Vacuum enabled	Digital output to switch on an external vacuum pump.
Min. torque	If the minimum torque has not been reached when the step is finished, an error message will be displayed.
Max. torque	If the maximum torque is reached before the step is finished, the tool will stop and the controller will display an error message.
Min. angle	If the minimum angle has not been reached when the step is finished, an error message will be displayed.
Max. angle	If the maximum angle is reached before the step is finished, the tool will stop and controller will display an error message.
Min. clamp torque	The minimum clamp torque can be used to detect joint anomalies. If below, the controller will display an error message.
Max. clamp torque	The maximum clamp torque can be used to detect joint anomalies. If exceeded, the tool will stop and the controller will display an error message.
Min. clamp angle	The minimum clamp angle can be used to detect joint anomalies. If below, the controller will display an error message.
Max. clamp angle	The maximum clamp angle can be used to detect joint anomalies. If exceeded, the tool will stop and the controller will display an error message.
Step start delay	Delay from trigger to tool start.
Min. step time	Minimum time for the step. If not reached, the controller will display an error message.
Max. step time	Maximum time for the step. If exceeded, the controller will display an error message.