GALIL DMC-1832 3-Axis PCI Motion Controller

Description

Key Technical Specifications

The DMC-1832 is the 3-axis member of Galil’s DMC-18×2 Econo PCI family, using X, Y, and Z axes. The controller was designed for installation directly into a PC PCI bus and uses a 100-pin high-density external connection to an interconnect module or amplifier interface.

For standard servo operation, the controller generates a ±10 V analog command with a 16-bit DAC. Encoder inputs support TTL-compatible signals and quadrature feedback, while the controller can also be configured for stepper operation.

Product Introduction

The GALIL DMC-1832 is a three-axis PCI motion controller for PC-based servo and stepper applications. It controls the X, Y, and Z axes and provides analog servo commands, encoder feedback, programmable I/O, coordinated motion, electronic gearing, contouring, and linear/circular interpolation.

For conventional servo systems, the DMC-1832 outputs a ±10 V command signal and accepts encoder feedback for closed-loop positioning. Its 16-bit command resolution and position range of ±2,147,483,647 counts make it suitable for legacy machine tools, automation equipment, inspection systems, and other PC-controlled motion platforms.

DMC-1832

DMC-1832

Installation & Configuration Guide

Stage 1 — Pre-Installation Preparation

1. Confirm the replacement is specifically DMC-1832, not DMC-1822 or DMC-1842.
2. Verify the host computer provides a compatible PCI slot and operating environment.
3. Back up the existing Galil motion program, axis parameters, servo tuning values, I/O assignments, and host application configuration.
4. Record encoder wiring, amplifier connections, limit inputs, home inputs, and amplifier-enable wiring.
5. Prepare an ESD wrist strap, insulated tools, multimeter, and the correct 100-pin interface cable.
6. Identify the installed interconnect hardware. The DMC-18×2 documentation specifies ICM/AMP-1900 or ICM-2900 hardware as part of the normal system architecture.
7. Shut down the host PC completely and remove AC power before accessing the PCI chassis.

Stage 2 — Removing the Old Controller

1. Power down the PC and disconnect mains power.
2. Allow the system to discharge according to the PC manufacturer’s safety procedure.
3. Document the PCI slot position and cable orientation.
4. Disconnect the 100-pin interface cable without pulling on the cable conductors.
5. Disconnect any auxiliary I/O or expansion hardware attached to the controller.
6. Remove the PCI retaining screw and carefully withdraw the controller.
7. Inspect the PCI connector, 100-pin connector, cable, and interconnect module for contamination or mechanical damage.

Stage 3 — Installing the DMC-1832

1. Verify the model number and board condition.
2. Insert the card into the correct PCI slot with the board fully seated.
3. Secure the card mechanically to the chassis.
4. Reconnect the 100-pin cable with the correct connector orientation.
5. Reconnect the ICM/AMP interface and verify that X, Y, and Z signals correspond to the original machine axes.
6. Restore encoder, limit, home, abort, and amplifier-enable wiring.
7. Install the required Galil software/driver environment compatible with the host operating system.
8. Restore the backed-up motion program and configuration only after confirming the controller is recognized by the host.

Stage 4 — Power-On & Testing

1. Start the PC and verify that the controller is detected correctly.
2. Establish communication using the applicable Galil software or terminal interface.
3. Query the controller identity and confirm that the expected configuration is present.
4. Verify encoder counts independently for X, Y, and Z before enabling servo power.
5. Check limit, home, abort, and amplifier-enable signals.
6. Verify the ±10 V command output at the appropriate interface before connecting motion to a production load where practical.
7. Enable one axis at a time and perform a low-speed jog.
8. Confirm commanded direction versus actual motor direction.
9. Verify position feedback, following error, acceleration/deceleration, and limit behavior.
10. Run the machine through a controlled dry cycle before returning it to automatic production.

Important: Do not assume that a replacement preserves the original machine’s tuning or host-software compatibility. The controller is only one part of the motion chain; amplifier type, encoder feedback, interconnect module, host PCI environment, and Galil program configuration must all remain compatible.

Frequently Asked Questions

Q1. What is the GALIL ?
It is a three-axis PCI motion controller from Galil’s DMC-18×2 Econo series. The three standard axes are X, Y, and Z.

Q2. Does the directly drive a servo motor?
No. The is a motion controller, not a motor power amplifier. In a conventional servo architecture, it generates a ±10 V command and receives encoder feedback while an external amplifier supplies motor power.

Q3. Is the a PCI or PCIe card?
The documented DMC-18×2 version is a PCI-bus controller. Do not assume that a modern PCIe slot is electrically interchangeable with the original PCI interface. Host-computer compatibility must be checked before replacement.

Q4. What encoder signals does the support?
The documented encoder interface is TTL-compatible and supports single-ended or differential A/B signals. The specified maximum A/B edge rate is 12 MHz, with an index input also provided.

Q5. Can the control stepper motors?
Yes. The DMC-18×2 family supports both servo and stepper configurations. Stepper operation uses pulse and direction outputs, with a documented maximum step output frequency of 3 MHz.

Q6. Is the still manufactured?
Current industrial-parts listings identify the as discontinued by the manufacturer. New-surplus and refurbished units are available through secondary-market suppliers, but condition and firmware revision should be verified for each unit.

Q7. What should be checked before purchasing a replacement ?
Verify the exact model, board revision, firmware, PCI compatibility, 100-pin cable, interconnect module, encoder interface, amplifier type, and existing Galil program. For a production-machine replacement, confirm the controller can communicate with the existing host software before removing the functioning unit.