Limit Switches on Velmex Motorized Linear Stages
Limit Switches are electro-mechanical devices that regulate the motion on positioning devices. On Velmex products they are primarily used to stop/turn off the motor when activated preventing over-travel of the carriage/slider. They also can be used to send an event signal. Velmex uses several different types.
• Adjustable (moveable) limits, which are standard on BiSlide Assemblies and optional on XSlide and UniSlide Assemblies.
• Fixed end of travel limits, which are standard on XSlide Assemblies and optional on UniSlide Assemblies. These are not adjustable.
• Internal limits which are only available on the UniSlide MB90 Series.
• Home switches, which actually reference a point rather than limit travel, are used on Rotary Tables and can be used on XSlide Assemblies.
It is possible to purchase motor-driven Velmex stages without limits, however, it is not recommended and it may effect the warranty should you incur any damage.
The following at-a-glance chart outlines the Velmex Stage and what limits can be used.
| Available Limit Switches | ||||
|---|---|---|---|---|
| Velmex Product | Adjustable | Fixed, End-of-Travel | Internal | Home Switch |
| BiSlide® Assemblies | Standard | N/A | N/A | Optional* (Mechanical) |
| UniSlide® MA15 Series | Optional | Optional (Outboard) | N/A | Optional* (Mechanical) |
| UniSlide® MA25 Series | Optional | Optional (Outboard) | N/A | Optional* (Mechanical) |
| UniSlide® MA40 Series | Optional | Optional | N/A | Optional* (Mechanical) |
| UniSlide® MA60 Series | Optional | Optional | N/A | Optional* (Mechanical) |
| UniSlide® MB90 Series | Optional | Optional | Standard | Optional* (Mechanical) |
| UniSlide® XY Tables | Optional | Optional | N/A | N/A |
| XSlide™ Assemblies | Optional | Standard | N/A | Optional* (Magnetic) |
| Rotary Tables | N/A | N/A (Can be produced with 2 zero reference home switches) | N/A | Optional (Magnetic) |
*Requires an additional control other than VXM™ Controller
BiSlide® Limits
BiSlide® Limits
Limit switches mounted in the track on the side rib of the assembly to prevent over-travel.
UniSlide® Limits
Fixed, End-of-travel Limits (MA15/MA25)
These non adjustable push button switches are affixed to the side rib of Velmex UniSlide MA15 and MA25 Linear Stages.
Fixed, End-of-travel Limits (MA40, MA60, MA90)
These non-adjustable push button switches are built into the end plate of Velmex UniSlide® MA40, MA60, and MB90 Assemblies.
Internal Limits (MB90 “J” Only – Standard)
Internal Limit Switches consisting of two switches and a control rod for MB90 Series UniSlide® Assemblies.
UniSlide® Adjustable Limits
Mounted on the side rib of Velmex UniSlide Assemblies, these two switches can be used to stop travel.
XSlide™ Limits
XSlide™ Adjustable Limits (Optional)
These moveable switches can be used to stop travel within the overall travel distance of the XSlide™ Assembly.
XSlide™ Fixed, End-of-travel Limits (Standard)
Two fixed, end-of-travel limit switches built into the end plates of XSlide™ Assemblies.
XSlide™ Magnetic Reed Home Switch
A magnetic reed home switch sets a reference point to return the carriage to home position
Rotary Table Limits
Rotary Limit Switches
These switches create limits that restrict travel to a specific degree arc.
Rotary Magnetic Home Switch
This home switch sets a reference point to return the carriage to its starting position.
Cable Adapters
Cable Adapters
Motor and limit cables and various adapters are available to connect select obsolete Velmex products to current Velmex products.
