BONFIGLIOLI Active Cube Applications Manual

•
When a speed sensor is used, the current orientation is determined using the captured speed sensor
pulses based on the identified flux direction of the machine. Once the reference pulse was captured
twice at the correct distance, the mechanical orientation of the machine is considered as known. In
this way, field-oriented operation of the PMSM is possible using a speed sensor instead of a resolver.
• Set Parameter
Operation Mode Search Run 645 to “10 - Quick Synchronisation”, see Chapter
5.1.1.3 “Determination of the flux direction at startup”.
5.1.2.4 Adjustment of resolver offset
The flux direction identified upon startup has an uncertainty of some degrees. For exact field-
orientation, it is recommended to adjust Parameter
Offset 382, like in the case of operation of PMSM
with resolvers, see Chapter 4.4 “For Configuration 806 (PMSM): Self-configuration of resolver offset”.
NOTE
In operation with speed sensor, the resolver offset is defined as the angle between zero pulse of the
speed sensor and the flux direction. The offset is referred to the mechanical
angle, not the electrical
angle. For this reason, the maximum value should be 360°/number of pole pairs.
5.1.2.5 Actual speed source
Via Parameter Actual Speed Source 766, the software enables selection of different actual speed
sources for the speed controller.
With setting “7 – Speed Sensor 2/Machine Model”, two actual speed sources can be combined. In this
way, it is possible to switch from a high speed range in sensor-less field oriented operation to a lower
speed range in speed sensor operation.
The switching limit between speed sensor and machine model is defined in this setting by Parameter
Frequency Limit 624, see Chapter 5.1.2.6 “Speed sensor monitoring”.
The change to operation with speed sensor enables axle positioning in high-speed spindles for tool
replacement.
Parameter
Unit
Setting range
Default settings
No.
Identifier
766
Act. speed source
-
Selection
3-Machine Model
Operation Modes of Parameter 766
1
-
Speed Sensor 1
Actual speed of speed sensor 1
2
-
Speed Sensor 2
Actual speed of speed sensor 2
3
-
Machine Model
Below the Frequency Limit 624, impression of start-
ing current (Starting Current 623). Above the fre-
quency limit, calculation of speed according to ma-
chine model (sensor-less field orientation).
7
-
Speed Sensor 2/Machine Model
Below the Frequency Limit 624 actual speed from
Speed Sensor 2. Above the frequency limit, calculation
of speed according to machine model (sensor-less
field orientation).
32 ACU Spindle Applications 11/13

BONFIGLIOLI Active Cube Specifications

General

Brand	BONFIGLIOLI
Model	Active Cube
Category	Inverter
Language	English