Description
Pacific Scientific SCE904AN-002-01 | SCE900 Servo Drive | Single-Axis Motion Control
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Pacific Scientific |
| Model | SCE904AN-002-01 |
| Product Family | SCE900 |
| Drive Type | Single-axis servo controller |
| Command Interface | Analog or incremental digital |
| Command Option Card | None |
| Input Voltage | 90–264 VAC |
| Input Frequency | 47–63 Hz |
| Input Phase | Single phase |
| Cooling | Convection |
| Fan | None |
| Continuous Current | 10.6 A reported |
| Peak Current | 21.2 A reported |
| Customization | Factory assigned, code 002 |
| Firmware | Standard |
The SCE900 configuration data identifies this unit as having no communications/setup option card, with analog or incremental digital command capability.
Current-Rating Verification Note
There is a material discrepancy in public records. One exact-model record lists 7.5 A continuous / 15 A peak, while multiple other records identify 10.6 A continuous / 21.2 A peak for SCE904AN-002-01.
For a live replacement, the actual drive nameplate and original Pacific Scientific configuration documentation should take precedence over reseller databases.
Product Introduction
The Pacific Scientific SCE904AN-002-01 is a single-axis servo controller from the legacy SCE900 drive family. Its configuration specifies an analog or incremental-digital command interface without an installed command-interface option card, making it suitable for motion systems where the controller receives a dedicated axis command rather than relying on a network option card.
The 002-01 suffix matters. SCE900 drives were offered with different current levels, command interfaces, option cards, cooling arrangements, and customization codes. Replacing this unit with another SCE900 drive based only on the family name can produce a mechanically compatible but electrically or functionally incorrect installation.
SCE904AN-002-01
Application Scenarios & Field Pitfalls — Engineer’s Perspective
Engineering Pain Point
The difficult part of replacing an older servo drive is usually not finding another unit. The real issue is matching the command interface, motor feedback, current class, customization code, and original tuning parameters.
Typical Applications
- Single-axis industrial motion systems
- Machine-tool and automation axes
- Material handling and positioning equipment
- Legacy production machinery requiring replacement of an servo controller
Technical Pitfalls to Avoid
- Do not replace it by model-family alone.
drives exist in multiple current and interface configurations. Check the complete suffix and installed option configuration. - Verify the motor and feedback system.
A replacement drive must be compatible with the original motor’s electrical characteristics and feedback device. Encoder/resolver mismatch can prevent commissioning even when the power rating appears correct. - Check the command interface before wiring.
This exact configuration is documented without a command-interface option card and supports analog or incremental digital command. A network-option is not automatically a drop-in substitute. - Do not trust conflicting current ratings.
Because published sources disagree between 7.5/15 A and 10.6/21.2 A for this exact designation, verify the physical nameplate and machine documentation before sizing the replacement. - Preserve the original tuning information.
Before removing a failed drive, record motor parameters, acceleration/deceleration limits, current limits, feedback settings, command scaling, and any machine-specific customization values that can be recovered.
Related Products
- Pacific Scientific SCE903A3-002-01 — single-axis servo controller with a different power/configuration class.
- Pacific Scientific SCE905-000-01A — Higher-current servo controller; not a direct substitute without motor and load analysis.
- Pacific Scientific SCE905-001-00 — Another configuration with different customization/interface characteristics.
- Pacific Scientific Series — Legacy servo-drive family containing multiple current ratings and command configurations.
- Pacific Scientific SCE904AN — Same basic SCE904 family; suffixes determine the installed options and configuration.
- Kollmorgen/Pacific Scientific replacement units — Later support arrangements may use different hardware; verify electrical and configuration compatibility rather than assuming backward compatibility.
Procurement Check
Before approving SCE904AN-002-01, verify:
- Exact part number: SCE904AN-002-01
- family
- Customization code 002
- No command-interface option card
- Analog/incremental digital command requirement
- Actual nameplate current rating
- 90–264 VAC supply requirement
- Motor voltage/current requirements
- Feedback type
- Existing command wiring
- Original machine tuning parameters
- Drive firmware/configuration
- Cooling arrangement and cabinet ventilation
- Physical mounting and terminal arrangement
Recommended procurement description:
Pacific Scientific Single-Axis Servo Drive/Controller, Analog or Incremental Digital Command, No Option Card, 90–264 VAC, Convection Cooled — verify current rating and motor/feedback compatibility before replacement.
