BONFIGLIOLI ACTIVE Cube ACU 201-11

10.4.3 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).
512
511
axis load of sRevolution
axismotor of sRevolution
rDenominato 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.
For optimum motor control, BONFIGLIOLI VECTRON recommends installing a speed
sensor directly at the motor.
10.4.4 Filter time constant speed sensor 1
EC1: Filter time constant 1193 can be used to filter the speed of speed sensor 1.
This can filter can be applied in cases, where the speed sensor fluctuates (in example
due to mechanical reasons).
Bonfiglioli Vectron recommends to change the value in small steps and check the
result and not to change the values in big steps.
Parameter
Settings
No.
Description
Min.
Max.
Fact. sett.
1193
EC1: Filter time constant
0 us
32000 us
0 us
Load
Encoder
Gear
Motor
8 teeth
16 teeth
06/13 Operating Instructions ACU 131