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Upcoming SMAC Shows and Events
Affidabilitá e Tecnologie
MaGyc
4/14 - 4/15, 2010
Turin, Italy
2010 Precision Optics Expo
SMMC
6/9 - 6/11, 2010
Taipei, Taiwan
Display Taiwan 2010
Servo Taiwan
6/9 - 6/11, 2010
Taipei, Taiwan
Automation Industrial Exhibition
Festek
8/4 - 8/7, 2010
Taipei, Taiwan
IMTS 2010
SMAC
9/13 - 9/18, 2010
Chicago, Illinois
TPCA Taiwan
SMMC
10/21 - 10/23, 2010
Taipei, Taiwan
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SMAC Electric Actuators | Set Up
Set Up Information
Position Mode: Position Mode will allow the actuating rod to be moved to chosen positions along the stroke using acceleration, velocity and force. It is possible to make absolute, relative and "learned position" moves.
Velocity Mode: Velocity Mode allows the actuating rod to be moved with a given velocity, acceleration, force and direction. Typically used for Soft-Land routines.
Force Mode: Force Mode is open loop, using no feedback from the controller. Actual position can still monitored, but has no effect upon the output.
Duty Cycle: SMAC requires that all units except for the CA series must be operated at less than 40% maximum duty cycle. Maximum duty cycle for the CA series is indicated in the table below.
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24V |
48V |
| CAL12 |
80% |
40% |
| CAL35 |
40% (single coil)
20% (double coil) |
40% (single coil)
20% (double coil) |
| CAL36 |
80% |
40% |
| CAL75 |
80% |
40% |
Duty cycle can be calculated as follows:
% of max force applied x % of cycle time it is applied = % duty cycle
For example:
100% force x 40% of cycle time = 40% duty
60% force x 50% of cycle time = 30% duty
40% force x 100% of cycle time = 40% duty
NOTE: Failure to observe this duty cycle recommendation will usually result in the actuator sustaining damage through overloading. Overloading will overheat the coil and may cause it to deform and touch on the magnet housing.
Shaft Run Out: Shaft run out is typically ‹50 micron.
Resolution and Repeatability: Resolution, when applied to SMAC products, is defined as the smallest position increment produced by the encoder. Our standard encoder
resolution is five microns, although most actuators also have the option to be fitted with a one micron or half micron encoder. Repeatability, sometimes referred to as reproducibility, is the ability of a system to return to a given position with little or no deviation. One of SMAC's principle advantages is the absence of any mechanical backlash which is inherent in so many stepper and ballscrew systems. In addition, our encoder reads the true linear position rather than converting the stepper motors rotary encoder signal to the linear ballscrew movement. With correct PID tuning, our actuators are repeatable to two encoder counts.
Controller Reporting and QA Functions: The controllers can output pass/fail and product performance figures, which can then be used in statistical QA and production analysis.
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