Description
⚙️ Product Overview
The OMRON DELTA TAU PMAC Lite 400-602402-10X is a 4-axis programmable multi-axis motion controller from the Delta Tau PMAC Lite family. The PMAC Lite platform was designed for coordinated motion control applications requiring programmable servo-axis management, encoder feedback, analog motion outputs, and machine-level control. The 400-602402-10X family is documented as the Universal PMAC-Lite hardware platform.
The referenced unit is identified as a 4-Axis PMAC Lite with option. Because the 10X suffix can represent a configuration/option variation, the exact installed option should be matched against the original controller, board markings and machine configuration before replacement.
PMAC Lite controllers are commonly encountered in legacy CNC, semiconductor, machine-tool, robotics and automated production equipment where precise multi-axis coordination is required.

🔧 Key Features
- Brand: OMRON / Delta Tau
- Model: 400-602402-10X
- Platform: PMAC Lite
- Product Type: Programmable Multi-Axis Motion Controller
- Axis Capacity: 4-axis
- Controller Architecture: PMAC programmable motion-control platform
- Motion Feedback: Incremental encoder interface capability
- Motion Output: DAC-based analog motion control architecture
- Application: Servo and coordinated multi-axis motion
- Configuration: With option; exact option should be verified
- Suitable for maintenance and replacement of legacy PMAC Lite motion-control systems
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | OMRON / Delta Tau |
| Model / Part Number | 400-602402-10X |
| Series | PMAC Lite |
| Product Name | 4-Axis Programmable Motion Controller |
| Controller Type | Multi-axis motion controller |
| Axis Capacity | 4 axes |
| Motion Output | DAC-based analog output architecture |
| Encoder Interface | Incremental encoder input capability |
| Configuration | With option; verify exact option |
| Condition | Verify listing condition / unit label |
| Dimensions | Configuration-dependent; verify original hardware |
| Weight | Configuration-dependent; verify before shipping |
🎯 Motion-Control Function
The PMAC Lite is designed to coordinate multiple servo axes from a programmable motion-control environment. Rather than acting as a conventional PLC CPU, it executes motion programs and servo-control calculations for coordinated machine movement.
A typical PMAC Lite installation can involve:
- Servo amplifiers or drives
- Motor feedback encoders
- Analog command interfaces
- Limit and home switches
- Machine I/O
- Operator/HMI systems
- Host computer communication
- Auxiliary motion-control hardware
The four-axis architecture makes the controller suitable for machines where several axes must operate independently or under coordinated interpolation.
🔌 Encoder & Motion Interface
The PMAC Lite family uses feedback and motion-output circuitry to close the control loop between the controller and servo system. PMAC Lite references identify incremental quadrature encoder capability and DAC-based motion outputs.
When replacing an existing controller, verify:
- Encoder type and signal format
- Encoder resolution
- Axis assignment
- Servo amplifier input requirements
- Analog output scaling
- Enable signals
- Limit and home inputs
- Emergency-stop logic
- Machine I/O configuration
The replacement controller should reproduce the original machine’s axis configuration rather than simply matching the four-axis designation.
💻 Programming & System Integration
PMAC systems are programmable motion controllers and rely heavily on application-specific configuration. The machine program, motion parameters, coordinate definitions, servo tuning and I/O assignments can all affect compatibility.
Before replacing a PMAC Lite controller, technicians should preserve:
- PMAC motion programs
- Motor configuration parameters
- Servo tuning values
- Coordinate-system settings
- Encoder scaling
- I/O assignments
- Machine-specific macros
- Communication settings
- Backup configuration files
Firmware and memory configuration are particularly important on legacy PMAC hardware. PMAC documentation identifies different memory/firmware configurations within the 602402 family, so the exact board suffix and installed configuration should be verified before initialization or firmware work.
🏭 Typical Applications
The PMAC Lite 400-602402-10X may be encountered in:
- CNC machine tools
- Semiconductor manufacturing equipment
- Wafer and substrate handling systems
- Precision positioning equipment
- Robotics and automation machinery
- Pick-and-place systems
- Multi-axis inspection equipment
- Electronic manufacturing machinery
- Precision cutting and machining systems
- Legacy automated production equipment
Its suitability depends on the original machine’s servo architecture, feedback system and PMAC software configuration.
🛠️ Installation & Maintenance
Before Installation
- Shut down the machine according to the manufacturer’s procedure.
- Isolate all applicable electrical power.
- Record the original board part number and option markings.
- Back up the existing PMAC program and configuration.
- Photograph connector positions and cable routing.
- Check the replacement board for physical damage.
- Verify jumpers, switches and configuration settings.
- Confirm the controller matches the original axis and option configuration.
After Installation
- Confirm power-supply levels.
- Verify communication with the host system.
- Check encoder feedback for every active axis.
- Verify limit and home inputs.
- Confirm amplifier-enable signals.
- Test each axis at low speed.
- Check direction and scaling.
- Perform a controlled homing sequence.
- Only then proceed to full-speed machine operation.
🔍 Troubleshooting
Controller powers up but axes do not move
Check amplifier enable signals, servo-drive status, interlocks, limit inputs and PMAC configuration before assuming controller failure.
Encoder feedback is incorrect
Check encoder wiring, A/B phase signals, index signals where applicable, shielding and axis assignment. Incorrect feedback scaling can also cause position errors.
One axis operates incorrectly
Compare the affected motor’s configuration parameters with the original backup. Check the corresponding DAC output, amplifier input and feedback channel.
Communication with the controller fails
Check the host communication interface, cable, communication settings and PMAC software environment. Avoid changing firmware until a complete configuration backup is available.
Replacement controller behaves differently from the original
Confirm the complete 400-602402-10X designation and installed option. PMAC Lite variants can differ in memory, firmware and hardware configuration, so physical similarity alone is not sufficient for replacement.
🔄 Replacement Compatibility
For legacy PMAC equipment, the complete ordering information should be matched.
Pay particular attention to:
- 400-602402-10X part number
- PMAC Lite hardware revision
- Installed option
- Memory configuration
- Firmware version
- Encoder interface requirements
- DAC/servo output configuration
- Existing PMAC program
- Machine-specific I/O
- Host communication arrangement
The 602402 family includes multiple configurations, and related PMAC Lite boards should not be treated as automatically interchangeable. For example, PMAC Lite 602402 variants are documented with different memory/firmware configurations.
❓ FAQ
Q1: What is the OMRON Delta Tau 400-602402-10X?
It is a PMAC Lite 4-axis programmable motion controller used for coordinated servo and machine motion control.
Q2: Is PMAC Lite a PLC?
It is better classified as a programmable multi-axis motion controller. It can participate in a machine-control architecture but is specifically optimized for motion-control functions.
Q3: How many axes does this model support?
The referenced configuration is a 4-axis PMAC Lite.
Q4: What type of equipment uses PMAC Lite?
PMAC Lite controllers can be found in CNC, semiconductor, robotics, precision positioning and automated manufacturing equipment.
Q5: Does the 10X suffix identify one exact option?
The complete suffix should be checked against the physical board. The 10X designation represents a family/configuration format, so the installed option should be verified before replacement.
Q6: Can a 602402-10X be replaced by any PMAC Lite board?
No. Memory configuration, firmware, hardware revision, encoder interfaces, options and machine software must be considered.
Q7: Should the PMAC program be backed up before replacement?
Yes. Preserving the existing motion program and configuration is strongly recommended before removing the original controller.
Q8: What information is best for compatibility checking?
Provide the complete controller label, option designation, revision markings and photos of the connector side. The machine model and original PMAC configuration are also useful.
📦 Recommended Related OMRON / DELTA TAU Models
- OMRON DELTA TAU PMAC Lite 602402-103 Universal Controller
- OMRON DELTA TAU PMAC Lite 602402-105 Motion Control Board
- OMRON DELTA TAU PMAC Lite 602402-106 Motherboard Module
- OMRON DELTA TAU PMAC2-Lite 400-602406-10X
- OMRON DELTA TAU PMAC2-PCI-Lite 602406 Series
- OMRON DELTA TAU PMAC-PC 4-Axis Controller
- OMRON DELTA TAU PMAC2-PC Multi-Axis Controller
- OMRON DELTA TAU PMAC-VME Controller
- OMRON DELTA TAU ACC-24PCI PMAC 4-Channel Expansion Card
- OMRON DELTA TAU PMAC-Lite Encoder / I/O Interface Modules
📌 Spare-Part Recommendation
For older production equipment using Delta Tau PMAC control, maintaining a tested spare controller can reduce downtime when the original motion-control board fails.
When stocking 400-602402-10X, record the complete part number, option designation, firmware/memory configuration and machine application. For a replacement installation, match the original controller configuration and restore the saved PMAC program and motion parameters before commissioning.
