ExtraTech PoleStar HP4 Controller
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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
Motion Controller ExtraTech Corporation Products
Software from ExtraTech Corporation
ExtraTech Software - Machine Tools Suite
Suite4 Install and Setup - InstallingMultiCamSuite4Software.pdf