ExtraTech PoleStar HP4 Controller
Overview
CNC motion controller with 4 integrated stepper drives that communicates with a VFD/LCD pendant, and a PC via Ethernet (or maybe also RS-232?). It was used by OEMs to provide controls on their machines. ExtraTech was bought by Multicam, who used their controllers, but supposedly the employees soon dispersed and Multicam doesn't have the ability to support repairing the controls anymore.
Online Resources
PoleStar HP4 Controller and Motor Drivers - ExtraTech (Wayback Machine)
Hand-Held Serial Keypad - SKD80 - ExtraTech (Wayback Machine)
Motion Controller ExtraTech Corporation Products (Wayback Machine)
Software from ExtraTech Corporation (Wayback Machine)
ExtraTech Software - Machine Tools Suite (Wayback Machine)
Motion Controllers — ExtraTech Systems (newer Wayback Machine)
Peripherals — ExtraTech Systems (newer Wayback Machine)
Suite4 Install and Setup - InstallingMultiCamSuite4Software.pdf
Suite4 Operator Training - MultiCamSuite4OperationInstructions.pdf