Product Description:

The 105-641001-01 is a plug-in motion control card manufactured by Pacific Scientific for the 105 Motion Control Cards series. Installed in a host chassis, the board issues step and direction commands to stepper drives, letting an automation controller position mechanical axes with high repeatability. By converting digital trajectory data into finely timed pulse trains, the product links computer logic to motor torque generation in packaging, semiconductor handling, and light assembly equipment.

The card resolves each motor revolution into 51200 steps/rev, so an attached stage can index in increments smaller than one millidegree. Pulse outputs can be clocked up to 2 MHz, enabling linear speeds that keep pace with high-throughput machinery. Current delivered to each winding is adjustable between a minimum of 0.625 A and a maximum of 5.0 A; setting the lower value reduces heat while the upper value maximizes holding torque. A user-selectable supply range spans 24 Vdc to 75 Vdc, allowing operation from both low-voltage control supplies and higher-voltage motion buses. Peak voltage across the driver’s low side is limited to a conservative 0.5 V, minimizing I²R losses, while the internal two-phase bipolar chopper topology keeps average current constant at the programmed setpoint.

A nominal switching rate of 20 kHz moves ripple frequencies outside most audible bands, improving acoustic comfort around operator stations. Acceleration profiles can be ramped in as little as 50 ms, which shortens cycle time when axes must start and stop repeatedly. The board is specified for chassis temperatures up to 60 °C, so fan-forced cooling may be required in densely populated enclosures. Supply current draws up to 5.0 A during rapid motion bursts, and the assembly’s 1.0 lb weight has negligible impact on rack loading.