Product Overview

The Allen‑Bradley 2094‑BC04‑M03‑M​ is an Integrated Axis Module (IAM) from Rockwell Automation’s Kinetix 6200 servo drive family, designed for 400V-class three-phase AC input applications (324–528 VAC, 47–63 Hz) and intended to serve as both the AC-line rectifier/regenerator and the first motion axis inverter on a shared Kinetix 6200 DC-bus system. Unlike the Kinetix 6000’s separate 2094‑XP power module plus 2094‑AMxx axis modules, the Kinetix 6200 2094‑BC04‑M03‑M​ combines the rectification function and one axis of servo amplification into a single, compact module that mounts on the 2094‑PRSx power rail—reducing panel space, part count, and wiring complexity while retaining full multi-axis DC-bus energy sharing. The integrated axis module supplies a regulated 750 VDC nominal DC bus to itself and to additional Kinetix 6200 follower axis modules (2094‑AMxx‑M) connected on the same power rail, allowing regenerative energy from decelerating axes to be reused by accelerating axes on the same bus, improving overall system efficiency.The Allen‑Bradley 2094‑BC04‑M03‑M​ provides a continuous output current of 42 A RMS (approx. 28 kW @ 400V motor rating, depending on motor voltage/current characteristic) and a peak current rating of 60 A for short-duration acceleration or holding torque, with a 30 A 0-pk feedback-referenced rating for servo loop closure. Motion command and drive configuration are communicated via a fiber-optic SERCOS (IEC 61491) interface—typically connected in a ring to a 1756‑M08SE (ControlLogix) or 1768‑M04SE (CompactLogix) SERCOS motion module—ensuring deterministic, noise-immune real-time control. The module includes Safe Torque Off (STO) inputs wired to a safety relay or safety PLC, providing SIL3 / PLe category stop functionality without external contactors in the motor power leads. Front-panel LEDs indicate power stage status, fault conditions, bus voltage presence, and SERCOS link activity, while commissioning and tuning are performed through DriveExecutive or directly via the motion instruction set in RSLogix 5000 / Studio 5000.Designed for vertical DIN-rail or power-rail mounting with mandatory top-and-bottom airflow clearance (≥ 100 mm / 4 in), the 2094‑BC04‑M03‑M​ is the cornerstone module of a scalable Kinetix 6200 multi-axis servo system driving Allen‑Bradley MP-Series (MPM, MPL, MPA) and legacy TLY-series permanent-magnet servo motors across demanding packaging, converting, web-handling, and assembly applications.

Technical Specifications

Main Features and Advantages

Integrated rectifier and axis drive in one module: The 2094‑BC04‑M03‑M​ eliminates the need for a separate Kinetix 6000-style 2094‑XP rectifier/power module. By combining AC input rectification with a full-featured 42 A axis inverter, the IAM reduces the number of modules in a small multi-axis system (e.g., 1 × IAM + 1 × AMxx = 2-axis system vs. old-style 1 × XP + 2 × AMxx = 3 modules), saving panel width, wiring terminations, and associated cost while still permitting DC-bus sharing with up to seven additional axis modules on the same 2094 power rail.Multi-axis DC-bus regeneration sharing: When the 2094‑BC04‑M03‑M​ is the lead module on a 2094 power rail, its internally regulated DC bus is made available to all follower axis modules (2094‑AMxx‑M). This allows regenerative energy from overhauling loads—common in vertical axis or high-speed deceleration—to be absorbed by simultaneously accelerating axes on the same bus instead of being dissipated in a brake resistor (unless the regenerated energy exceeds bus capacity, in which case an external 2094‑BSPx shunt module may be added). The net effect is reduced heat generation in the enclosure and lower total installed drive power rating for the application.SERCOS fiber-optic motion networking: The 2094‑BC04‑M03‑M​ connects via duplex ST-type fiber to a Rockwell SERCOS motion module (1756‑M08SE in ControlLogix or 1768‑M04SE in CompactLogix), forming a deterministic ring with cycle times as low as 0.5 ms–2 ms depending on axis count and SERCOS phase configuration. Optical isolation removes ground-loop and EMI concerns even in VFD-heavy environments, and the SERCOS ring provides drive-status monitoring, parameter upload/download, and real-time torque/current/position feedback natively within the Logix tag database.Built-in Safe Torque Off (STO) to SIL3/PLe: Two safety-input terminals on the 2094‑BC04‑M03‑M​ accept a dual-channel safety-rated dry-contact or semiconductor output from a safety relay or safety PLC. When the STO circuit opens, the drive removes PWM gate signals to the inverter IGBTs within milliseconds, preventing torque production without removing AC line power—satisfying EN ISO 13849-1 Category 3 / PL e and IEC 61508 SIL 3 requirements. This eliminates the need for external line contactors on each axis for basic safety-stop compliance.Wide 400V-class input range & global deployment: The 324–528 VAC (3Ø) input range accommodates 380 V, 400 V, 415 V, and 480 V nominal European/Asian/NA plant supplies, making the 2094‑BC04‑M03‑M​ suitable for machinery exported worldwide. Internal inrush limiting, phase-loss detection, and over/under-voltage protection are standard, as are I²t motor-overload modeling and extensive drive-level diagnostics (over-current, over-temp, encoder loss, following error) reported through SERCOS status words to the controller.Scalable from 1 to 8 axes: Start with a single 2094‑BC04‑M03‑M​ (1 integrated axis) and add 2094‑AMxx‑M axis modules (available in 3, 6, 12, 24, 42, 60 A ratings) to the same power rail for up to 8 total axes (IAM + 7 AMxx). This modular growth path lets machine builders right-size the drive lineup without changing the control architecture or re-certifying safety functions.