Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Key Technical Specifications
| Parameter | Value |
|---|
| Input Voltage | 100–240 VAC RMS (88–265 V range), single-phase or three-phase |
| Input Frequency | 47–63 Hz |
| Continuous Input Current | 28 A rms (recommend 30 A fuse, AWG 10 wire) |
| Continuous Output Current | 35 A (3-phase) / 15 A (1-phase) |
| Peak Output Current | 75 A (3-phase) / 50 A (1-phase) |
| Continuous Output Power | 7.5 kW (3-phase at 240 V) / 3.0 kW (1-phase) |
| Internal Shunt Rating | 4.0 kW continuous / 10.0 kW peak (external shunt option) |
| Control Modes | ±10 V analog, 8 binary presets, quadrature encoder follower, Step/Direction, CW/CCW |
| Feedback | Single motor-mounted encoder (commutation + velocity) |
| Discrete I/O | 5 configurable 24 V DC opto-isolated inputs + ENABLE; 4 outputs; 2 relay outputs (brake, drive ready) |
| Analog I/O | 2 × 10-bit 0–10 V inputs; 2 × ±10 V outputs |
| Memory | 128 kB Flash EPROM + 34 kB RAM (verify per hardware revision) |
| Weight | 9.67 kg (21.32 lbs) |
| Dimensions | 360.6 × 151.7 × 224.5 mm (14.2 × 5.97 × 8.84 in) |
| Environmental | 2 g vibration (10–2000 Hz), 15 g shock, 5–95% RH non-condensing, 1500 m altitude |
| Certifications | UL listed, cUL listed, CE marked |
| Compatible Motors | Allen-Bradley F-Series, H-Series, N-Series, Y-Series brushless servos |
The 1398-DDM-075 accepts single-phase or three-phase 100–240 VAC input power — a flexibility unique to this frame size in the Ultra 200 family.Its continuous output power is 7500 W on three-phase input and 3000 W on single-phase input. The drive weighs 9.67 kg (21.32 lbs) and carries UL, cUL, and CE approvals.Current ratings by phase configuration are documented in the official Ultra 200 product data.
Product Introduction
The Allen-Bradley 1398-DDM-075 is a 7.5 kW universal digital servo drive from the Ultra 200 family. It closes current, velocity, and position loops around a single motor-mounted encoder and accepts commands as ±10 V analog, encoder follower, Step/Direction, or preset profiles — no external motion controller required for standalone axes.
Its engineering edge is the removable personality module: motor and application parameters live in a swappable EEPROM, so a spare drive drops in with zero reconfiguration. For plants still running 1990s-era Ultra axes, that module is the difference between a 20-minute swap and a full recommissioning.
1398-DDM-075
1398-DDM-075
1398-DDM-075
Application Scenarios & Field Experience
Part 1 — The Engineering Pain Point
Legacy motion axes built on Ultra 200 hardware rarely fail gracefully — they fail at full production speed, with a wound material web, a positioned weld head, or a loaded robot arm in the balance. The application is proven, the tuning is dialed in, and the only real risk is downtime. The 1398-DDM-075 addresses exactly this: it is the correct form-fit-function replacement that preserves existing motor, cabling, and tuning investment without a platform migration.
Part 2 — Specific Application Scenarios
- Converting / Web Handling — Winder and unwind tension control: The drive’s ±10 V analog torque mode accepts a tension controller’s trim signal directly, while the encoder follower mode slaves an axis to line speed. The 4.0 kW internal shunt absorbs regenerative energy from fast stops on heavy rolls.
- Metal Forming / Press Feed — Roll feed and piloting: Step/Direction input from a punch press controller gives precise position following at press speeds, with 75 A peak current available to accelerate the flywheel effect of large feed mechanisms.
- Packaging — Rotary knife and indexing conveyors: Quadrature encoder follower mode tracks product spacing without a PLC in the loop, cutting latency and simplifying the control architecture on high-speed lines.
- General Machinery Spares — Fleet standardization: OEMs who built machines around Y-Series and H-Series servos keep one 1398-DDM-075 with a configured personality module per drive frame — the module carries the motor file, so the spare covers any axis on the floor.
Part 3 — Field Story
A converter’s unwind axis faulted on a Saturday night run — the drive’s seven-segment display showing an overcurrent trip that would not clear. The on-call tech pulled the spare 1398-DDM-075 from the storeroom, moved the personality module and motor cable across, and cycled power. Because all tuning and motor parameters traveled with the EEPROM, the axis re-homed on the first enable. The web never hit the floor, and the third-shift crew finished the order.
Standard Operating Procedure (SOP) for Quality Control
Every 1398-DDM-075 unit we ship passes this four-stage process:
- Visual & Origin Inspection
- OEM labels, serial number format, and manufacturing date codes checked against known genuine units
- Anti-counterfeit review: heatsink casting markings, PCB silkscreen, component revision consistency
- Personality module socket inspected for bent pins or prior damage; module presence confirmed
- Live Rig Testing
- Power-on self-test at 100 V and 240 V AC input; seven-segment status display read through its full code sequence
- Motor output stage verified with a dynamometer load at rated continuous current
- Full I/O sweep: all digital inputs, relay outputs, and analog channels exercised; encoder interface handshake confirmed
- Firmware Verification
- Exact firmware revision read via serial connection (ULTRA Master) and recorded on the test certificate
- Personality module read/write cycle verified; stored parameters dumped and archived for the buyer
- ESD-Safe Packaging
- Drive sealed in anti-static bag with moisture barrier and desiccant
- Personality module transported in a conductive carrier, foam-cushioned double box, QC certificate enclosed
Frequently Asked Questions (FAQ)
Q1: Is the 1398- compatible with my existing motors and machine? A: It pairs with Allen-Bradley F-, H-, N-, and Y-Series brushless servos, with motor parameters pre-loaded at the factory for AB motors. Third-party brushless motors work too via the custom motor file feature, but you will need the motor’s electrical data and a tuning pass. If your old drive is a 1398-DDM-075X, note the X version adds indexing — swapping a non-X in place of an X removes that function.
Q2: What warranty do you offer? A: 12 months from shipment on both new surplus and refurbished units, covering workmanship and component failure under normal service. The warranty does not cover damage from incorrect single-phase current-limit settings or DC bus work performed live — both are installer responsibilities.
Q3: Is it actually in stock, and how fast does it ship? A: We confirm physical stock against your order before quoting. Legacy Ultra 200 supply is finite and irregular — we advise buying spares while units are available rather than waiting for a failure. Typical dispatch is 1–3 business days, with expedited options for line-down situations.
Q4: My replacement drive behaves differently than the old one — why? A: Almost always a personality module mismatch. Motor and application parameters live in that module, not the drive itself; a spare shipped with a blank or different module will run with default tuning. Transfer your original module or download the archived parameter file via ULTRA Master before judging the drive. Also verify the firmware revision matches your documentation, since behavior varies slightly across releases.
Q5: What are the critical installation pitfalls? A: Two things will hurt you. First, if you run this drive on single-phase power, you must set the current limits to 50 A peak positive and negative with 15 A average — skip this and you risk drive malfunction and damage. Second, the DC bus capacitors retain hazardous voltage for several minutes after power-off — measure the bus before touching anything inside, or wait the time printed on the drive’s warning label. Torque all power terminals to 1.25 Nm (11 lb-in), and do not connect or disconnect motor power cables while energized.
