VT6L Maintenance 14. Joint #6
116 VT series Maintenance Manual Rev.2
tension to the motor unit and fix it.
Joint #5 timing belt tension: 23 - 36N
Belt tension meter setting values
Weight: 2.5g/mm width×m span
Width: 6.0mm
Span: 184mm
Hexagon socket head cap bolts: 3-M4×20 (with slotted hole washer)
Tightening torque: 4.0 ± 0.2 N·m
Jumping (position gap) may occur if the value is below the lower limit.
Vibration (abnormal noise) or reduction in life of the parts may occur if the value
exceeds the upper limit.
When you replace with a new belt, belt extends and the belt tension may decrease in the
initial stage. Make sure to operate the robot two to three days and check the belt
tension again
Connect the following connectors of the motor.
A: Signal cable connectors (for motor × 2)
B: Signal cable connector (for AMP board)
Connector for the signal cable connector (for motor) is the
same color.
Bind the following cables and the ground wire
with the
wire tie.
Wire tie: AB100
Motor cable (Joint #5)
Signal cable (Joint #5)
Motor cable (Joint #6)
Ground wire
Mount the following covers.
Arm #4 Cover 1
Arm #4 Cover 2
Reference: 7. Covers
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