
110
Operating Instructions ACU
09/08
9.4.3 Gear factor speed sensor 1
Setting of parameters
EC1 Gear Factor Numerator
511 and
EC1 Gear Factor De-
nominator
512 is required if a gear is installed between the speed sensor and the
motor shaft. The parameters define the mechanical transmission ratio between the
speed sensor and the motor side. The parameters must be set such that the gear
factor numerator corresponds to the motor rotations and the gear factor denominator
corresponds to the sensor rotations.
Parameter
Settings
No.
Description
Min.
Max.
Fact. sett.
511 EC1 Gear Factor Numerator
-300.00 300.00
1.00
512 EC1 Gear Factor Denominator
0.01 300.00 1.00
Example: The motor shaft turns twice while the load shaft rotates once (16/8).
Load
Encoder
Gear
Motor
8 teeth
16 teeth
512
511
axis
load
of
s
Revolution
axis
motor
of
s
Revolution
r
Denominato
Factor
Gear
1
EC
Numerator
Factor
Gear
1
EC
=
In this example, parameter
EC1 Gear factor Numerator
511 must be set to 2 and
parameter
EC1 Gear factor Denominator
512 must be set to 1.
Note:
For optimum motor control, BONFIGLIOLI VECTRON recommends in-
stalling a speed sensor directly at the motor.
Operating Instructions ACU
09/08
110
Summary of Contents for Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series
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