ABB DSDP140B is an industrial automation module manufactured by ABB. Depending on the specific model and application scenario, it can function as a counter board or a dual-channel digital output module. Below is a detailed introduction:

1. Product Type & Overview

Counter Board: As a counter board, DSDP140B is used for counting, measuring, and controlling various pulse signals. It features high-speed counting, multiple counting modes, and flexible configuration.

Dual-Channel Digital Output Module: DSDP140B can also serve as a dual-channel digital output module, designed to control various switching devices such as relays, contactors, valves, and motors. It is equipped with 2 independent output channels and supports multiple output modes as well as protection functions.

2. Key Parameters

Parameters for Counter Board

Operating voltage: 24VDC

Output frequency: 40 VA

Processing speed: 10 Mbit/s, 200 Datasets/s

Program capacity: 128 MByte

Ambient temperature: 55°C

Ambient humidity: 5% – 95%

Dimensions: 20 mm × 255 mm × 350 mm

Weight: 0.44 kg

Parameters for Dual-Channel Digital Output Module

Number of output channels: 2

Maximum current per channel: 2A

Output modes: Normally open, normally closed, pulse

Protection functions: Short-circuit protection, overload protection

Power supply voltage: 24VDC

Power consumption: 2W

Operating temperature: -20°C – 60°C

Storage temperature: -40°C – 85°C

Humidity: 5% – 95% (non-condensing)

Enclosure protection class: IP65

Module dimensions: 87 mm × 46 mm × 23 mm

Weight: 0.14 kg

Mounting method: DIN rail mounting

3. Application Scenarios

Industrial Automation: Used for production line counting, speed measurement, and position control.

Packaging Industry: Applied in counting and speed control of packaging machinery.

Textile Industry: Enables counting and speed control functions for textile machinery.

Machine Tool Control: Capable of measuring the feed rate of machine tools.

Power Industry: Used for speed measurement of generators.

Petrochemical Industry: Suitable for flow measurement.

4. Operating Principle

When Used as a Counter Board

DSDP140B works with encoders and digital input modules to detect the actual value of the motor position encoder, thereby achieving precise position control and start-up control. For example, in a flying shear control system, an incremental encoder on the motor shaft is used for shear blade position feedback. DSDP140B detects the pulse signal from the encoder and controls the motor’s set value based on the actual shear blade position, ultimately regulating the motor’s speed and position.

When Used as a Dual-Channel Digital Output Module

Through its two independent output channels, DSDP140B outputs different states (normally open, normally closed, pulse) according to control signals to control connected switching devices—realizing operations such as device on/off and start/stop. During the output process, short-circuit protection and overload protection functions ensure the safe operation of both the equipment and the module.