Description
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1398-DDM-005-DN (base part 1398-DDM-005) |
| Manufacturer | Rockwell Automation (Allen-Bradley) |
| Product Type | ULTRA 100 Series Universal Digital Servo Drive |
| Control Architecture | Microcontroller-based digital current, velocity, and position control |
| Input Voltage | 100–240 VAC rms nominal, single phase (88–265 VAC range) |
| Input Frequency | 47–63 Hz |
| Input Current | 5 A rms |
| Continuous Output Power | 0.3 kW @ 120 VAC; 0.6 kW @ 240 VAC (500 W class) |
| Peak Output Power | 0.9 kW @ 120 VAC; 1.8 kW @ 240 VAC |
| Continuous Output Current | 2.5 A |
| Peak Output Current | 7.5 A |
| DC Bus Voltage | 141–339 VDC |
| Communication | DeviceNet (-DN); RS-232 and 4-wire RS-485 serial |
| Serial Baud Rate | 1,200–19,200 baud |
| Operating Temperature | 0 °C to 55 °C (32 °F to 131 °F) |
| Storage Temperature | -40 °C to 70 °C (-40 °F to 158 °F) |
| Humidity | 5–90 % non-condensing |
| Maximum Altitude | 1,500 m (5,000 ft) |
| Enclosure Requirement | Must be installed in NEMA Type 12/13, IP54, or IP65 cabinet |
| Dimensions (approx.) | 198 × 73 × 146 mm (7.9 × 2.9 × 5.8 in) |
| Weight (approx.) | 1.88 kg (4.1 lb) |
| Compatible Motors | Allen-Bradley F-, H-, N-, W-, and Y-Series servo motors |
| Configuration Software | Ultra Master (Windows-based) |
| Lifecycle Status | Discontinued by manufacturer |
Main Features and Advantages
The 1398-DDM-005-DN combines universal input power, precise digital motion control, and integrated DeviceNet networking in a compact single-axis package. Its fully digital control loops manage current, velocity, and position with high repeatability, avoiding the drift and variability associated with analog drive designs. The velocity loop offers up to 300 Hz bandwidth, the position loop updates every 1 ms, and the current loop responds in 125 µs, giving the drive the dynamic stiffness needed for precision positioning and fast acceleration profiles.
A major advantage of the Allen-Bradley 1398-DDM-005-DN is its flexible command architecture. The drive accepts ±10 V analog velocity/torque commands, step-and-direction pulse trains up to 1 MHz, master encoder following up to 1 MHz, CW/CCW pulse pairs, and serial host commands. The integrated DeviceNet interface allows the drive to communicate directly with an Allen-Bradley PLC network, providing access to drive status, faults, and commands without additional wiring. Eight binary-selectable presets are available for indexing applications, and the indexer supports absolute, incremental, and registration moves with homing capability.
The 1398-DDM-005-DN is built for straightforward integration and maintenance. All electronics are enclosed in the drive housing, so no external power transformer is required, and the front panel provides clearly labeled connectors and status indicators. The built-in Intelligent Power Module (IPM) protects against overcurrent, short circuit, and overtemperature, while bus overvoltage and undervoltage protection adds further safety. On-board self-diagnostics and a status display make fault identification faster, reducing troubleshooting time during commissioning and routine service.
From a lifecycle perspective, the Allen-Bradley 1398-DDM-005-DN is particularly valuable for maintaining legacy automation assets. Although the original product has been discontinued, it remains a practical and economical replacement for existing ULTRA 100 installations, allowing plants and OEMs to keep proven machinery running without converting to a completely new drive platform. Its compatibility with a wide range of Allen-Bradley servo motors and its configurable control modes make it a versatile spare-part solution for long-serving motion systems.
