Abstract: A pulse synchronize load stabilization routine for adjusting a fastener to a desired torque level with a tool operatively connected to a fastener is provided. The method includes applying a first level of current to the tool, pulsing the tool to cause the fastener to rotate and measuring a dynamic torque load on the fastener while it is rotating. A computer readable medium containing an executable code for adjusting a fastener with a tool operatively connected to the fastener is also provided. Executable code includes a routine which causes the tool to run in a first velocity speed control mode determined if a torque load is at a predetermined level and if the torque load is at a predetermined level, then apply a pulse synchronize load stabilization sequence.

Abstract: A servomotor controller provides nut runner and other functions in a set of stackable modules. Extended-function modules can be added into and removed from the stack as needed. Destacking of closely spaced, wall-mounted controllers can be performed without demounting. Module assemblies are dripproof. Multiple sizes of nutrunner driver electronics and multiple keyboard and display options can be selected. A reprogrammable central processor can identify newly installed or removed features within a controller and reconfigure itself F accordingly. Stackable modules include Ethernet(®, multiple-bit I/O, and proprietary interfaces for many industries. The other modules communicate with the processor module via a backplaneless bus architecture. The central processor supports master/satellite group operation, whereby one controller unit can command multiple others, and whereby a higher-level system can command multiple controllers or multiple master/satellite controller groups.