Description
🔹 Product Overview
The OMRON DELTA TAU ACC-24PCI is a PMAC1 four-channel expansion card designed to extend the motion-control capabilities of Delta Tau PMAC-based systems.
This board is identified as ACC-24PCI, PMAC1 4 CHANNEL, with MPN 603902-102. It is intended as an expansion interface within PMAC motion-control architectures rather than as a standalone general-purpose controller. The referenced listing identifies the unit as new, while other current listings describe the same configuration as new old stock.
The ACC-24PCI is particularly useful when maintaining legacy Delta Tau / PMAC motion-control systems that require additional axis or motion-interface capacity. Proper compatibility should be verified against the existing PMAC controller, system configuration, firmware, and connected drive hardware before installation.
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | OMRON DELTA TAU |
| Model | ACC-24PCI |
| Product Series | PMAC1 |
| Product Name | PMAC1 4-Channel Expansion Card |
| Product Type | Motion-Control Expansion / Interface Card |
| Channel Configuration | 4-Channel |
| MPN | 603902-102 |
| Associated Platform | PMAC Motion-Control System |
| Application | Multi-Axis Motion Control |
| Condition / Status | New / New Old Stock |
⚙️ Key Features
- Delta Tau PMAC1 expansion architecture
- ACC-24PCI four-channel configuration
- Four-channel motion-control expansion capability
- Designed for PMAC-based industrial motion systems
- Suitable for machine-tool and automation applications
- Supports expansion of an existing PMAC control architecture
- Useful for legacy system maintenance and retrofit projects
- Compact electronic control-board format
- Intended for integration with compatible PMAC hardware
- Model identification: ACC-24PCI / 603902-102
🏭 Industrial Motion-Control Applications
The ACC-24PCI is suited to industrial systems where additional motion-control channels are required within a PMAC-based architecture.
Potential applications include:
- CNC machine tools
- Semiconductor manufacturing equipment
- Precision positioning equipment
- Robotics and automated machinery
- Wafer-processing equipment
- Packaging machinery
- Multi-axis assembly systems
- Inspection and measurement equipment
- Servo-controlled production machinery
- Legacy AMAT / Delta Tau motion-control platforms
For semiconductor and other OEM equipment, the complete machine configuration should be checked before replacement. The expansion card must match the host PMAC controller and the electrical interface used by the existing motion system.
🔌 System Integration
The ACC-24PCI should be treated as an expansion component rather than a replacement for the main PMAC processor/controller.
Before installation, verify:
- Existing PMAC controller model.
- PMAC1 system architecture.
- ACC-24PCI identification and MPN.
- Number of required motion channels.
- Existing axis assignments.
- Servo or drive interface requirements.
- Encoder and feedback configuration.
- I/O allocation.
- Firmware and software compatibility.
- Existing machine parameters and motion programs.
A replacement expansion card should match the original hardware configuration as closely as possible. Similar-looking Delta Tau boards may have different channel configurations or electrical functions.
🛠️ Installation & Maintenance
Before installing the ACC-24PCI, shut down the machine and isolate the applicable electrical power.
Recommended inspection points include:
- PCI or card-edge contacts
- Board connectors
- Component condition
- PCB contamination
- Signs of overheating
- Corrosion or oxidation
- Loose hardware
- Damaged connectors
- Board mounting condition
Use appropriate ESD protection when handling the card. Avoid touching exposed connector contacts or electronic components unnecessarily.
For legacy PMAC systems, keep a record of the controller model, installed expansion cards, firmware version, axis configuration, I/O mapping, and machine parameters. This information can significantly reduce troubleshooting time during future maintenance.
🔍 Troubleshooting
The host PMAC system does not recognize the expansion card:
Check card seating, connector condition, system configuration, and compatibility with the installed PMAC controller.
Motion channels do not operate correctly:
Verify channel assignment, wiring, servo configuration, feedback signals, and machine parameters.
Encoder feedback is incorrect:
Inspect encoder wiring, connector seating, feedback configuration, and axis/channel assignment.
The replacement card produces unexpected behavior:
Compare the complete board identification and MPN with the original unit. Confirm that the system requires an ACC-24PCI four-channel configuration.
The card works electrically but the machine cannot run its original program:
Check PMAC firmware, motion programs, configuration files, axis parameters, and I/O assignments.
Intermittent operation occurs:
Inspect connectors, card-edge contacts, grounding, environmental conditions, and mechanical mounting.
✅ First-Operation Checklist
Before returning the machine to production:
- Confirm ACC-24PCI identification.
- Verify MPN 603902-102.
- Confirm compatibility with the existing PMAC1 system.
- Compare the replacement board with the original.
- Verify four-channel requirements.
- Check all card connections.
- Confirm axis/channel assignments.
- Verify encoder and drive wiring.
- Restore the correct PMAC configuration.
- Test each affected channel individually.
- Verify limits, feedback, direction, and enable signals.
- Perform a controlled production test.
❓ FAQ
What is the OMRON DELTA TAU ACC-24PCI?
It is a four-channel expansion card for Delta Tau PMAC1-based motion-control systems.
What is the MPN of this card?
The referenced configuration is identified as 603902-102.
Is the ACC-24PCI a standalone motion controller?
No. It is an expansion/interface card intended to operate as part of a compatible PMAC motion-control system.
How many channels does it provide?
The listed configuration is identified as a 4-channel PMAC1 expansion card.
Can the ACC-24PCI replace another Delta Tau expansion card?
Only after verifying the original card’s model, channel count, electrical interface, and host-controller compatibility.
Is this card new?
The referenced listing identifies it as new. Other listings describe the same configuration as new old stock, so the actual packaging and physical condition should be confirmed for the specific unit being supplied.
Can it be used with PMAC2?
Compatibility should not be assumed solely from the PMAC family name. Verify the specific PMAC generation, host interface, firmware, and expansion architecture before installation.
🔄 Related OMRON DELTA TAU Models / Series
- PMAC1 Series
- PMAC-PC Series
- PMAC2 Series
- PMAC2 PCI Series
- PMAC2A Series
- PMAC Lite Series
- PMAC PCI Series
- ACC-24 Series
- ACC-28 Series
- UMAC Motion-Control Series
These products belong to related Delta Tau motion-control families. They are not automatically interchangeable with the ACC-24PCI and should be selected according to the original machine architecture.
📦 Spare-Parts & Lifecycle Planning
For legacy PMAC-based production equipment, expansion cards such as the ACC-24PCI should be included in the site’s critical electronic spare-parts plan.
Recommended practices include:
- Configuration control: Record the complete ACC-24PCI model and MPN.
- System mapping: Document which PMAC controller and machine use each expansion card.
- Channel documentation: Maintain the relationship between the four channels and machine axes/functions.
- ABC classification: Give higher priority to cards used on production bottlenecks.
- Buffer stock: Maintain a tested spare where replacement lead time could affect production.
- Firmware records: Keep the controller firmware and machine configuration documented.
- Preventive inspection: Periodically inspect stored boards for corrosion, contamination, and packaging damage.
- Last-time-buy planning: For legacy PMAC installations, evaluate future spare requirements before qualified inventory becomes difficult to source.
