Product Overview

15FN4042 is a non-renewable (two-quadrant) digital DC driver from Reliance Electric (now part of Rockwell Automation) in the FlexPak 3000 series. It has a rated power of 15HP (11kW) at 460VAC and is designed for general industrial DC speed control applications. It is a discontinued model. Repaired equipment is often used for maintenance and replacement of old systems.

Model definition

15: 15HP power rating

F: FlexPak 3000 series

N: Non-regenerative (non-renewable, two-quadrant)

4042: 460VAC, three-phase, standard configuration code Technical Specifications

Input: Three-phase AC, 230/460VAC ±10%, 50/60Hz

Output (Armature): 0–240/500VDC, maximum continuous 26A

Output (Excitation): 0–150/300VDC, 10A maximum

Power: 7.5HP (5.6kW) @ 230VAC; 15HP (11kW) @ 460VAC

Control mode: Open-loop voltage, closed-loop speed (tachometer/encoder), torque control

Control characteristics: Two-quadrant operation (no energy feedback), speed ratio 200:1

Protection: Overcurrent, overvoltage, undervoltage, overheating, short circuit, grounding, demagnetization, overspeed

Communication: Standard RS-232/485; optional Profibus-DP, DeviceNet

Environment: 0–45°C, 5–95% RH (no condensation)

Installation: Wall-mounted / Floor-standing (vertical)

Weight: Approximately 45kg (99lbs)

Interface and Wiring

Power terminals: L1/L2/L3 (three-phase input), A+/A- (armature output), F+/F- (excitation output), PE (ground)

Control terminals: Start/stop, forward/reverse, 0–10VDC/4–20mA speed setting, tachometer/encoder feedback, fault reset, emergency stop

Communication ports: 9-pin RS-232 (PC connection), 25-pin (driver interconnection) Core function

Digital precise speed control: dual-loop (speed + current) control, speed stability ±0.01%

High torque output: 15HP heavy-duty capacity, strong starting/low-speed torque

Non-renewable economic design: two-quadrant operation, cost lower than regenerative type (FR series)

Comprehensive fault protection: self-diagnosis + rapid shutdown, protecting the driver and motor

Parameter programmable: parameter setting on panel or CS3000 software, supports upload/download

Real-time monitoring display: load percentage, armature current/voltage, speed, etc. multiple parameters Application scenario

General machinery: Lathe, Milling machine, Grinding machine, Drilling machine (15HP medium-sized load)

Material conveying: Conveyor, Bucket elevator, Small crane

Process industry: Mixer, Fan, Pump type equipment, Extruder (variable speed requirement)

Textile / Printing and dyeing: Spinning machine, Drying machine (tension control + stable speed regulation)

Renovation of old systems: Direct replacement with FlexPak 3000 of the same power but non-renewable type