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National Instruments Corporation
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UMI Accessory User Guide — UMI-4A Specifications
UMI-4A Specifications
The following specifications apply only to the UMI-4A accessory. To
obtain a system specification, you must account for your motion controller.
Please refer to your controller specifications to determine overall system
specifications.
Some signals have compatibility defined as signal pass-through. This
means the UMI-4A may have passive filtering on these signals but will not
affect the voltage range or current handling capability. Consult your motion
controller specifications to determine the allowable voltage range and logic
level compatibility of the signal.
These specifications are typical at 25 °C unless otherwise specified. Refer
to your motion controller user manual for detailed specifications on
encoder inputs, limit and home switch inputs, breakpoint outputs, trigger
inputs, and analog inputs.
Encoder Interface (Each Axis)
Inputs...................................................... Quadrature, incremental
Differential input threshold .................... ±0.3 V (typical)
Single-ended input threshold ................. TTL/CMOS
Voltage range ......................................... 0 to 5 VDC
Noise filter (RC time constant) .............. 100 ns
Max quadrature frequency ..................... 1 MHz
Limit and Home Switch Inputs (Each Axis)
Noise filter (RC time constant) .............. 10 µs
Compatibility ......................................... Signal pass-through
Configurable I/O
Compatibility ......................................... Signal pass-through
Opto 22 compatible ................................ via J19 connector
Summary of Contents for UMI-4A
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