Product Description:

Pacific Scientific manufactures the 105-070001-05 as part of its 105 Motion Control Cards series. This board is a programmable digital position controller that directs servo axes in automated machinery, using resolver feedback to close the position loop and maintain commanded motion profiles. Through its onboard serial ports, it links with host PCs or PLCs, so it functions as the motion layer inside packaging lines, pick-and-place equipment, or index tables where coordinated point-to-point positioning is required.

The default communications channel runs at 9600 bits per second on RS-232, RS-422, or RS-485 and can be adjusted by the user. Encoder inputs accept transition frequencies up to 750 kHz, letting the card read high-speed quadrature signals without missing counts, while a second output port can re-transmit pulse streams to a master counter at 16,384 PPR. Internal control closes the position loop every 1.28 ms and the velocity loop every 427 microseconds. These update periods let the controller correct following error during rapid acceleration. Commanded motion is rendered at a native resolution of 4096 steps/rev, so small increment moves can be issued without dithering or lost precision.

Application data remain in nonvolatile memory for up to 10 years, allowing the card to power up ready for service without being downloaded again. There are 28 programmable I/O lines that can be mapped as limit switches, home sensors, or process triggers, enabling tight interaction with external hardware. The PWM stage sources up to 200 mA for drive enable or brake signals, and its carrier ripple centers on 20 kHz to keep switching noise above the audible range. Resolver excitation is produced internally at 5859.375 Hz and sampled every 85.33 microseconds so the card can track shaft angle in real time while maintaining the stated position accuracy.