When Control Panels Got Smaller and Smarter
In the 1990s, machine builders began replacing racks of discrete relays with compact controllers that could sit inside the panel door. The GE Fanuc VersaMax Micro family answered that shift, and the IC200UDR010 became a practical workhorse for OEMs who needed real I/O density without a full rack system. Today Emerson owns the line, and this 28-point micro PLC still earns its place on conveyors, pump skids, and packaged equipment.
What the IC200UDR010 Delivers
The unit packs 16 × 24 VDC inputs, 11 relay outputs rated Form A at 2 A max., and one 24 VDC transistor output at 0.5 A. That mix suits applications where most loads are relay-driven but one axis or signal needs fast solid-state switching. A Hitachi Super-H processor at 28.0 MHz executes Boolean logic in 1.0 µs, so scan times stay predictable on small to mid-size machines.
Power comes from a single 24 VDC supply. Two built-in ports — one RS-232 and one RS-485 — support SNP and Modbus RTU, which keeps integration with HMIs, drives, and legacy networks straightforward. Program memory is Flash, so logic survives power cycles without battery maintenance.
Technical Specifications
| Specification | Value |
|---|---|
| Series | VersaMax |
| Discrete I/O | 16 × 24 VDC inputs; 11 relay outputs (Form A, 2 A max.); 1 × 24 VDC transistor output (0.5 A) |
| Total discrete I/O | 28 points |
| Processor | Hitachi Super-H, 28.0 MHz |
| Execution time | 1.0 µs per Boolean operation |
| Program memory | Flash |
| Expansion | Up to 4 expansion units (up to 84 I/O points) |
| Built-in ports | 1 × RS-232, 1 × RS-485 |
| Protocols | SNP, Modbus RTU |
| Supply voltage | 24 VDC |
| Operating temperature | 0 to +60°C ambient |
| Storage temperature | -40 to +85°C |
| Relative humidity | 5 to 95% non-condensing |
| Protection rating | IP20 |
| Dimensions (H×W×D) | 90 × 76 × 150 mm |
| Weight | ~0.6 kg (supplier-reported) |
Where It Fits on the Plant Floor
A water treatment skid can use the 16 DC inputs for float and pressure switches while the relay outputs drive solenoid valves. A packaging line might pair the transistor output with a high-speed reject gate. Because expansion supports up to 4 units and 84 I/O points total, the IC200UDR010 scales with the machine instead of forcing a controller swap.
Integration and Selection Notes
Modbus RTU over RS-485 makes the controller a natural fit for existing supervisory networks. Wiring into such networks may require an external gateway or connection module, so confirm cables and gateways with your supplier before commissioning. Buyers should verify panel clearance against the 90 × 76 × 150 mm housing and confirm the 24 VDC supply is clean and regulated.
Official Emerson production status is unverified; the unit is currently available in aftermarket channels (last verified: 2026-09). Please verify current lifecycle status and availability with Oil AutoTech before ordering. For hands-on technical selection help and fast dispatch, worldwide, contact Oil AutoTech today for pricing and availability.
