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01/07/2006

Tech Notes

Galil Optical Screw Terminal Board (GOST Board)

The GOST board is a daughter card made to plug directly on top of the DMC-21X3 (1 through 4 axis) controller to simplify interconnect wiring to servo/stepper amplifiers and machine related I/O. The board breaks out and provides convenient screw terminal terminations for all of the signals on the DMC-21X3 96 pin DIN header. Two versions of the GOST board are available:

	GOST-DMC2113 for single axis applications.
	GOST-DMC2143 for 2 to 4 axis applications.

In addition to the screw terminals, the GOST board provides optical isolation for all of the inputs and outputs as follows:

	Optical isolation for the general-purpose inputs (Sink/Source selectable; 4 inputs at 24VDC; 4 inputs independently selectable at 5 - 24 VDC)
	Optical isolation for the general-purpose outputs (Sink/Source selectable, 8 outputs at 5 - 48 VDC, 350mA source per point)
	Optical isolation for the overtravel and home limit inputs (Sink/Source selectable, 24 VDC)
	Optical isolation for the amplifier enable outputs (X, Y, Z, and W independently selectable Sink/Source, 5 – 48 VDC)
	Amplifier interconnect I/O voltage selectable independent of general purpose I/O voltage for systems that require 5 and 24 VDC I/O on the same machine
	Internal suppressors on general-purpose outputs for inductive loads
	Field replaceable solid-state relay output IC’s
	Isolation of GOST board logic power and Galil DMC-21X3 power
	Direct routing from Galil DMC-21X3 to screw terminals for the motor command (analog), encoder, and PWM/direction, and 24 VDC power signals

** Note: To properly mount the GOST board to the DMC-21X3 make sure to order the options listed below:

	-V Vertical Ethernet and RS232 connectors (up)
	-DCXX DC-to-DC Converter (XX = 24 or 48)
	-UP 96 pin DIN pointing up (vertical)
	-VP 4 pin Molex power connector vertical

Example DMC-21X3 part number:

DMC-2143-V-DC24-DIN-UP-VP

Documentation:

	GOST Board Connector Pinout (.pdf)
	Galil Optical Screw Terminal (GOST) Manual.pdf

Acrobat Reader required for .pdf files

GOST Gallery

Click on Picture for Larger Image

GOST-DMC2143 Board mounted on Galil Control DMC-2143

Top view of GOST-DMC2143 Board and Galil DMC-2143, GOST not mounted

Top view of GOST-DMC2143 Mounted on Galil DMC-2143