Specifications
192-040011 N18
Electronic cam control
Automation
21
Parker Hannifin GmbH
Electromechanical Division
COMPAX XX70: electronic cam control
- Mechanical cam and camshaft function implemented elec-
tronically in a safe and reliable manner -
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The field of application
• Using the COMPAX XX70 compact servo control-
ler, mechanical cams and camshafts can be im-
plemented electronically.
• The movement of the main axis is recorded by an
incremental encoder. COMPAX XX70 generates the
setpoint of the slave axis according to the move-
ment relationship requested and controls the drive
accordingly. The slave axis is implemented using a
3-phase servo motor (either synchronous or asyn-
chronous).
Typical fields of application can be found in the
packaging industry.
Within a power range of 2.5kW - 35kW, the
COMPAX XX70 allows the drive power to be decen-
tralised, thereby reducing:
• space requirements
• variety of parts required
• mechanical coupling components
This results in:
• smaller machines
• reduction in cost
• shorter set-up times
• less expenditure on maintenance
The implementation
• The cam profile ...
...is stored in COMPAX XX70 as a sequence of ref-
erence points in non-volatile memory and has the
following properties:
• Up to 2500 reference points between which
COMPAX interpolates in a linear fashion
• Repeatability: up to 0.02 degrees
• Several profiles can be stored at the same time
• Profiles can be selected externally
• Dynamic switching between profiles using the "In-
terlink curves" function
• The camshaft...
...is simulated using auxiliary functions which can be
assigned to all reference points. COMPAX has the
following auxiliary functions:
• Programmable control of 8 digital outputs. The ini-
tial pattern is set up when processing the first ref-
erence point
• An analogue voltage is generated via 2 analogue
outputs
A voltage in the range of ±10V is output depending
on the programmed auxiliary value and on the an-
gle of the master axis.
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