IC693APU301 Axis Positioning Module: A Practical Replacement Guide
Finding a trustworthy single-axis motion module for a legacy Series 90-30 PLC rack gets harder every year. The IC693APU301 Axis Positioning Module (APM) from GE Fanuc solves that problem for plants still running the Series 90-30 platform. It combines PLC logic with dedicated servo axis control in one slot, so your existing rack keeps doing real work without a full control system overhaul.
Formerly built by GE Fanuc and now supported under Emerson Automation, this module is officially discontinued. That makes sourcing from a specialist supplier the practical path for maintenance and repair teams.
What the IC693APU301 Actually Does
The IC693APU301 is a single-axis positioning module. It controls one servo motor and handles motion or position control inside a Series 90-30 PLC system. The module compares actual axis position with the commanded position and acts on the difference in real time.
Two operating modes cover most machine needs:
- Standard mode — the module merges PLC logic with high-performance motion control into one integrated system.
- Follower mode — provides electronic gearing for continuous master and slave applications.
A 1 millisecond servo loop update keeps the axis responsive. The module also offers a 25-pin servo connection and a 24-pin high-density connector, plus LED indicators (EN1, EN2, STST, OK, CFG) that simplify troubleshooting on the floor.
Key Specifications at a Glance
| Feature | Detail |
|---|---|
| Product type | Axis Positioning Module (APM) |
| Axes supported | One (1) |
| Servo loop update | 1 millisecond |
| Operating modes | Standard mode; Follower mode |
| Connectors | 24-pin high density; 25-pin D type |
| Slot width | Single slot |
| Compatibility | Series 90-30 PLCs |
| Lifecycle status | Discontinued / Obsolete |
IC693APU301 vs. Other Motion Options
Buyers comparing motion control paths for a Series 90-30 rack usually weigh three choices. The table below frames the trade-offs.
| Option | Axes | Integration Effort | Notes |
|---|---|---|---|
| IC693APU301 APM | 1 | Native to Series 90-30 rack | Discontinued; direct replacement for existing APM slots |
| External standalone motion controller | Varies | Separate wiring and programming | Adds cabinet space and a second programming environment |
| Full PLC platform migration | Varies | High | New hardware, new software, new training |
For plants with working Series 90-30 logic, the IC693APU301 usually wins on integration effort. A standalone controller adds cost and complexity. A full migration is a capital project, not a spare-part decision.
CPU and Rack Compatibility
The module works with several Series 90-30 CPUs, and the permitted module count depends on which CPU you run:
- CPU 311, CPU 313, CPU 323: up to three (3) APM modules
- CPU 331 and higher: up to eight (8) APM modules
- Per baseplate: three (3) modules maximum
This matters when you plan a multi-axis machine. Confirm your CPU model before ordering, because the ceiling changes the whole layout.
Cables and Software You Will Need
Motion programs for the IC693APU301 are developed with the Motion Programmer software package. Configuration uses VersaPro software version 1.1 or later, or Logic-Developer PLC.
Compatible cables include:
- IC693CBL311 — 10 feet / 3 meters
- IC693CBL319 — 3 feet / 1 meter
- IC693CBL317 — 10 feet / 3 meters, with an 8-inch external shield pigtail
- IC693CBL320 — 3 feet / 1 meter, with an 8-inch external shield pigtail
Installation and Setup Notes
The IC693APU301 fits any Series 90-30 CPU or expansion baseplate and occupies a single slot. Because it is a discontinued module, follow the original manufacturer’s installation and configuration documentation for your rack. Keep the high-density and D-type connectors clean and fully seated, and route servo cables away from high-noise power wiring where practical.
Maintenance and Reliability
Legacy motion modules reward steady attention. Inspect the module and its connectors periodically, watch the LED indicators for changes from normal patterns, and keep the cabinet environment within the conditions your system was designed for. Since the IC693APU301 is discontinued, treat every working unit as a long-term asset and keep a spare on the shelf.
Before You Order
The IC693APU301 is discontinued/obsolete. Please verify current lifecycle status and availability with SpareTechPLC before ordering. Confirm your CPU model, your baseplate slot count, and your cable part number so the module drops into your rack without surprises. SpareTechPLC supplies industrial automation parts and news for maintenance teams working with legacy platforms.
Frequently Asked Questions
Is the IC693APU301 still in production?
No. The data lists the product lifecycle status as discontinued/obsolete. Contact SpareTechPLC to confirm availability and discuss replacement options.
How many axes does this module control?
The IC693APU301 supports one (1) axis. It controls a single servo motor and performs motion or position control.
Which CPUs can run this module?
It works with CPU 311, CPU 313, CPU 323, and CPU 331 and higher. The first three allow up to three (3) APM modules; CPU 331 and higher allow up to eight (8).
What is the difference between standard mode and follower mode?
Standard mode combines PLC logic with high-performance motion control. Follower mode provides electronic gearing for continuous master and slave applications.
How many modules fit on one baseplate?
A maximum of three (3) APM modules can be installed per baseplate.
