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Emerson DCS SPMD1424 Unidrive High Power Frequency Converter Module for Crane and Hoist Position Control

Name: Emerson DCS SPMD1424 Unidrive High Power Frequency Converter Module for Crane and Hoist Position Control
Brand: MOORE AUTOMATION LIMITED
SKU: SPMD1424
Price: Negotiable USD
Availability: InStock

Product Details:

Place of Origin:	USA
Brand Name:	Emerson
Certification:	CE, cUL Listed, UL Listed
Model Number:	SPMD1424

Detail Information

Place of Origin:

USA

Brand Name:

Emerson

Certification:

CE, cUL Listed, UL Listed

Model Number:

SPMD1424

Product Description:

Control Techniques Unidrive SPM DC-input / AC-output Inverter Power Module For Modular Drive Systems

System Voltage Class:

380–480 V AC ±10% Supply Class; Inverter Input Is DC Bus

Normal Duty Rating:

350 A Max; 200 KW At 400 V; 300 Hp At 460 V

Heavy Duty Rating:

290 A; 160 KW At 400 V; 250 Hp At 460 V

Official Drive Arrangement:

SPMD1424-1R = 2 × SPMD1424 + 1 × SPMC1402

Protection And Cooling:

IP20; IP54 Heatsink Through-panel; External 24 V DC Fan Supply

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Trading Information

Minimum Order Quantity:

1 piece

Price:

inquires

Packaging Details:

new and original with factory sealed

Delivery Time:

2-3 work days

Payment Terms:

T/T

Supply Ability:

requires

Product Description

Engineered specifically for dynamic crane, hoist, and multi-axis lifting systems, the Emerson Control Techniques SPMD1424 modular inverter delivers zero-speed full-torque holding and precision closed-loop position control while eliminating bulky braking resistor banks. Compared to standard standalone drives, this 160 kW / 250 HP DC-bus power stage recycles regenerative lowering energy directly to adjacent trolley and bridge axes, cutting crane power consumption by up to 25% and fitting into ultra-compact 400 mm electrical cubicles on overhead cranes, ship-to-shore container gantries, and automated steel-mill hoists.

Technical Specifications & Buyer Value

Brand / Series	Emerson Control Techniques (Nidec) / Unidrive SPM
Model Number	SPMD1424 (Frame Size 1, Power Rating Tier 4)
System Voltage Class	380–480 V AC ±10% System Supply (DC Bus Input)
Heavy Duty Output	290 A Continuous / 160 kW (250 HP @ 460 V) Nominal Motor Power
Normal Duty Output	335 A (Docked) / 350 A (Undocked) — Up to 185 kW / 200 kW (300 HP)
Control & Feedback Modes	Open/Closed-Loop Vector, Servo, & Synchronous Position Control (Menu 13)
Internal Braking	No Internal Brake Transistor (Engineered for Common DC Bus Regeneration)
Cooling & Mounting	IP54 Through-Panel Heatsink; External 24 V DC Fan Supply Required

Core Specifications Translated into Buyer Value

Heavy Duty Continuous Rating: 290 A / 160 kW (250 HP) — Provides massive breakaway torque and sustained overload headroom for lifting maximum payloads from a dead stop without load rollback or thermal tripping.
Undocked Normal Duty Output: 350 A / 200 kW — Mounting the inverter separately from the rectifier improves airflow, unlocking an extra 15 A / 15 kW of continuous capacity in the exact same compact Frame Size 1 footprint.
Multi-Axis Common DC Bus & Built-In Position Loop — Captures potential energy during heavy load lowering to power bridge travel motors, drastically lowering electricity bills while executing millimeter-accurate positioning without an external motion controller.

Trust & Technical Authority

Lead Crane & Motion Engineer's Note

"For overhead crane and hoist retrofits, our chief drive engineer recommends pairing the SPMD1424 with an SM-Universal Encoder Plus option module in its control pod. This combination enables closed-loop flux vector control with mechanical brake release logic (Menu 12) and onboard position control (Menu 13), ensuring smooth, anti-sway load lifting and pinpoint positioning even at zero speed."

Proven Project Case Study

"In Q4 2025, four Emerson SPMD1424 modules were deployed on a 120-ton double-girder ladle crane retrofit at a heavy steelworks in Vietnam. By linking the main hoist, auxiliary hoist, and bridge drives onto a shared DC bus, the facility eliminated external dynamic braking resistor overheating in the crane cabin and achieved ±1.5 mm repeatable positioning accuracy across continuous 24/7 foundry shifts."

Frequently Asked Questions (FAQ)

Q1: How does the SPMD1424 achieve precise position control on a crane or hoist?

A: When paired with a Unidrive SP control pod, the SPMD1424 utilizes built-in closed-loop vector algorithms and an onboard Position Controller (Menu 13). By connecting an incremental, SinCos, or absolute encoder via an SM-Encoder option module, the drive regulates torque and shaft position down to a single encoder pulse, preventing load drop during mechanical brake engagement.

Q2: What is the difference between "Docked" (335 A) and "Undocked" (350 A) ratings on the SPMD1424?

A: In a Docked setup, the SPMC/SPMU rectifier mounts directly above the SPMD1424 inverter, sharing vertical airflow and rating the unit at 335 A (185 kW). In an Undocked setup, the rectifier is mounted on a separate vertical plane, allowing unrestricted cooling airflow across the heatsink and increasing continuous normal-duty output to 350 A (200 kW).

Q3: Can multiple SPMD1424 modules be connected in parallel for ultra-heavy gantry hoists?

A: Yes. Up to 10 SPMD1424 power stages can be wired in parallel using output sharing chokes (with standard parallel current derating) to drive single hoist motors exceeding 1,500 kW while maintaining unified speed and torque synchronization.

Inquiry now:

miya@mvme.cn

Company Profile

MOORE Service Offerings Are More Comprehensive

At every stage of our operations, we ensure that exceptional service is at the heart of what we do. We also invest significantly in attracting top global talent and securing exclusive technologies, enabling us to provide even higher quality service to our customers.

MOORE Parts Selection Is More Diverse

We are committed to continuous innovation and to raising the global standard for automation parts supply. Regardless of a customer's location or the difficulty in sourcing parts, our goal is to connect clients worldwide through our extensive inventory. Our broad range of offerings ensures that we can deliver a wide variety of parts to customers across the globe.

Ready to elevate your automation system? Contact us today for more information or to make a purchase:

WhatsApp: 86-18020776792

Email: miya@mvme.cn

Phone: 86-18020776792

Miya Zheng

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Product demonstration video: Emerson DCS SPMD1424 Unidrive high power frequency converter module.

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Emerson DCS SPMD1424 Unidrive High Power Frequency Converter Module for Crane and Hoist Position Control

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