FEC MICRO NR - Manual (Page 63)

FEC Micro Nutrunner Operations Manual Chapter 6: Fastening Instructions (Rev. 2: 02/12)
Page 6-7
The graphic below describes the ideal relationship between torque and speed. Typically for high
motor durability, high speed (FREERUN speed) should slow to SLOWDOWN SPEED before the
fastener seats. Final TORQUE SPEED should not exceed 50 RPM.
FIG. 6-3b Ideal Relationship of Speed and Torque
Standard Torque
14: Speed Change
Torque
Torque
Angle/Time
Speed
50: Initial Speed
40: Initial Time
53: Torque
Speed
52: Slow Down
Speed
51: Freerun
Speed
61: Torque Inhibit
Revolutions
60: Freerun
Revolutions
42: Final
Time
Time/Revolution
s
41: FREE RUN Time 42: Final
Time