
B-65270EN/05 4.SERVO FUNCTION DETAILS
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4.18 TORQUE TANDEM CONTROL FUNCTION
Optional function
(1) Overview
If a single motor is not capable of producing sufficient torque to drive
a large table, for example, tandem control allows two motors to
produce movement along one axis.
A motor of the same specification is used for both the main motor and
sub-motor.
Only the main motor is responsible for positioning. The sub-motor
only produces a torque. In this way, double the torque can be obtained
(load sharing mode).
By applying a preload torque to produce tension between the main
motor and sub-motor, the backlash between gears can be reduced
(anti-backlash mode).
Tandem control is used to run linked linear motors and motors with a
winding tandem (α
iS300/2000, αiS500/2000, αiS1000/2000HV).
(2) Applicable servo software series and editions
(Series 30i,31i,32i)
Series 90D0/A(01) and subsequent editions
Series 90E0/A(01) and subsequent editions
(Series 15i-B,16i-B,18i-B,21i-B,0i-B,Power Mate i)
Series 9096/A(01) and subsequent editions
Series 90B0/A(01) and subsequent editions
Series 90B1/A(01) and subsequent editions
Series 90B6/A(01) and subsequent editions
(Series 0i-C)
Series 90B5/A(01) and subsequent editions
NOTE
This function cannot be used with servo HRV4
control.
Main
motor
Reducer
Pinion
Reducer
Sub-
motor
Rack
Pinion
Fig. 4.18 (a) Example of tandem control application (1)