ABB SPDSM04 Symphony Plus Pulse Input Module

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Manufacturer: ABB
Product No.: SPDSM04
Country of origin:Sweden
Product Type: Digital Output Module
Barcode: 85389081
Payment: T/T, Western Union
Weight: 800g
Dimensions: 71.12 mm x 358.14 mm x 271.78 mm
Shipping port: Xiamen
Warranty: 12 months

The ABB SPDSM04 is a high-performance Pulse Input Module developed for the Symphony Plus distributed control system architecture. Functioning within the S+ HR I/O (Harmony Rack) platform, this module offers 8 independent input channels optimized for capturing high-frequency pulse train signals ranging from 0 to 50 KHZ. It serves as a precision engineering interface for tracking rotational velocities, volumetric flow rates, and discrete industrial quantities directly from field transmitters and sensors.

Features

8 High-Frequency Input Channels: Accommodates multi-channel pulse processing on a single, space-efficient rack footprint.
Wide Dynamic Frequency Range: Processes pulse rates accurately from 0 up to 50 KHZ, supporting high-speed industrial measurement.
S+ HR I/O System Alignment: Integrates natively into standard Harmony Rack control topologies for low-latency bus communications.
DI Channel Categorization: Implements digital input conditioning circuitry adapted to withstand signal degradation and electrical noise over long cable runs.

Applications

Turbine speed measurement, overspeed monitoring configurations, and shaft rotation verification.
Interfacing with positive displacement, turbine, or vortex flowmeters emitting high-frequency pulse outputs.
Industrial tachometer integration and conveyor velocity monitoring in heavy processing industries.
High-speed piece counting and totalization systems across energy and manufacturing sectors.

Technical Specifications

Manufacturer	ABB
ABB Type Designation	SPDSM04
Channel Type	DI (Digital Input / Pulse Input)
Number of Input Channels	8
Frequency Range	0-50 KHZ
Product Net Depth / Length	71.12 mm
Product Net Height	358.14 mm
Product Net Width	271.78 mm
Product Net Weight	0.80 kg (Calculated)
Package Dimensions	410 mm x 320 mm x 110 mm (Calculated)
WEEE Category	5. Small Equipment (No External Dimension More Than 50 cm)
HS Code / Customs Tariff	85389081

Installation Guidelines

CRITICAL WARNING: Completely isolate external signal sources and verify that all associated processing loops are loops-off before inserting or removing the card. Failure to safely isolate active signal grounds could result in electrostatic damage or unstable transients within adjacent slots.

Inspect the rear backplane connectors and matching subrack slot for any physical obstructions or contamination.

Slide the module down the upper and lower guide rails until it aligns precisely with the rear bus layout.

Apply uniform pressure to fully seat the hardware unit, then tighten the faceplate mechanical locking pins.

Connect the verified field signals to the designated termination terminal strips and confirm appropriate shielding continuity.

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Key Features:

#Digital Output Module #Symphony Plus

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

What type of field devices can connect to this pulse input configuration?

This component links directly with magnetic pickups, eddy-current sensors, proximity indicators, and active flow transmitters generating clean frequency waveforms up to the maximum rated limits.

Is shielding required for wiring connected to these input terminals?

Yes. Continuous, twisted-pair shielded cabling is highly recommended for all high-frequency signal loops to protect the 50 KHZ measurement accuracy from surrounding electromagnetic interference.

How are the incoming pulse totalization and accumulation loops tracked?

The processor channels count the signal transitions directly at the hardware layer. This data is then communicated periodically across the system backplane to the controller logic for scaling and process totalization.

Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern	Greyish White Green
Country of origin	Sweden

ABB SPDSM04 Symphony Plus Pulse Input Module