Technical Specifications

Model:1336‑B003‑EAD‑L3‑S1

Brand:Rockwell Allen‑Bradley

Product Type:Complete AC Adjustable Frequency Drive Unit

Applicable Series:1336‑PLUS Constant‑Torque AC Drive

Power Rating:3 HP / 2.2 kW

Input:3‑Phase, 380‑480V AC, 50/60 Hz

Output Rated Current:5.0‑6.0A

Output KVA:3.9‑4.8KVA

Enclosure Type:EAD (NEMA‑1 / IP20 enclosed metal housing)

Physical Dimension:27.9cm × 22.9cm ×15.2cm (11.0in ×9.0in ×6.0in)

Weight:15.9kg (35lbs)

Factory Options:

‑ L3: L3 encoder feedback option board, supports incremental encoder signal access (differential / single‑ended, max 125kHz pulse frequency), configurable encoder power supply 5V /12‑15V via onboard jumper, realizes closed‑loop vector speed/torque control

‑ S1: S1 serial communication option board, RS‑485 physical interface, supports SCANport protocol, realize host PLC remote parameter access, start‑stop command, speed reference and drive fault read‑back

Note: Unit does NOT include FA2 local HIM operator panel, external HIM is required for local operation and parameter modification

Control Mode:Closed‑loop vector control, Sensorless vector control, V/F control

Speed Regulation Accuracy:Open‑loop ±0.5% rated speed; Closed‑loop with encoder ±0.1% rated speed

Overload Rating:150% rated current for 1 minute (constant‑torque)

Installation Method:Indoor wall‑mount surface mounting

Operating Temperature:0℃ ~ +40℃

Storage Temperature:-40℃ ~ +70℃

Product Details

1336‑B003‑EAD‑L3‑S1 is factory‑optioned complete NEMA‑1 enclosed 3‑HP 460V 1336‑PLUS AC drive, not separate PCB boards. Based on base model 1336‑B003‑EAD, factory pre‑installed L3 encoder feedback option board and S1 serial communication board, without FA2 local HIM panel.

The L3 option is dedicated encoder feedback interface board. It receives incremental encoder pulse signals from motor shaft, supports differential line‑driver or single‑ended encoder signals, maximum pulse input frequency reaches 125kHz. Encoder supply voltage can be selected 5V or 12‑15V through hardware jumper. It feeds actual motor speed back to main control CPU, enables high‑precision closed‑loop vector speed and torque control. Drive will trigger Encoder Loss Fault Code 60 when encoder signal loss, phase error or quadrature signal abnormality occurs.

The S1 serial communication option provides RS‑485 SCANport communication interface. It establishes data link between drive and Allen‑Bradley PLC or host controller. Functions include remote start‑stop control, remote speed setpoint, parameter read‑write, real‑time running data monitoring and fault code upload. Suitable for centralized automation system control. Since FA2 local HIM is not equipped, users need to connect external HIM unit for on‑site debugging and parameter editing.

Internal hardware integrates rectifier power stack, inverter IGBT power section, main control CPU board, auxiliary power supply, sampling and signal‑conditioning circuits. Supports closed‑loop vector, sensorless vector and V/F control for standard three‑phase induction motors. Retains standard onboard analog/digital hard‑wired I/O terminals for local hard‑wired control.

Full protection suite: over‑current, over‑voltage, under‑voltage, over‑temperature, input phase‑loss, motor thermal overload, ground‑fault protection, encoder signal loss fault alarm. Used for full‑unit replacement when multiple internal assemblies suffer compound damage. When swapping complete drive, back‑up original parameters, verify firmware compatibility, complete motor auto‑tuning and encoder wiring polarity calibration. Use shielded cable for encoder and communication wiring; strictly separate power cable and signal cable routing. Strict ESD protection required for installation and commissioning.

Typically applied for overhaul of legacy conveyors, process machinery, production lines requiring high‑precision closed‑loop speed regulation and PLC remote network control.

Remark:Legacy EOL complete drive unit;original production discontinued;please confirm motor rating, encoder specification(pulse count, signal type, supply voltage), PLC communication protocol matching, input voltage, installation dimension and option function matching before purchase.