Emerson DeltaV S-series Traditional I/O Modules

Emerson DeltaV S-series Traditional I/O Modules

The Emerson DeltaV S-series traditional I/O module is a modular input/output subsystem designed specifically for DeltaV distributed control systems (DCS). Its core positioning is to enhance the flexibility, reliability, and installation and operation efficiency of industrial process control. It is suitable for industrial scenarios such as petrochemicals, electricity, and energy that require high environmental adaptability and system stability. It can achieve precise acquisition and output of analog and discrete signals.

Core Features and Advantages

Modular and flexible architecture

Scalable design: A single controller can support up to 8 I/O carriers, with a total of 64 I/O slots. It supports mixing various I/O modules such as analog (AI/AO) and discrete (DI/DO) to meet the signal acquisition and control needs of different scenarios.

On demand configuration: Supports the "on-demand procurement" mode, allowing for the selection of I/O cards, 8-slot carriers, power supplies/controllers, and other components based on the system size. These components can be flexibly added as the system expands, avoiding resource waste.

Efficient installation and maintenance

Tool free installation: The carrier is fixed to the T-shaped DIN rail through a buckle, and the I/O module is directly inserted into the slot without the need for tools; All wiring is completed through carriers and terminal blocks, and there is no need to disconnect on-site wiring when replacing modules, reducing maintenance downtime.

Error proof design: Each I/O module and terminal block is equipped with a dedicated "key positioning" mechanism (two rotatable positioning columns, 6 position combinations), allowing only matching modules to be inserted into the corresponding terminal block to avoid the risk of incorrect installation.

Integrated power supply: The I/O carrier is equipped with a 24V DC bus based on-site power distribution, which is divided into primary/secondary power supplies for odd/even slots. Each slot is independently protected by a fuse, reducing the design of external power supply circuits and ensuring that single card failures do not affect other modules.

Online Expansion and High Availability

Online expansion: Supports adding I/O carriers with power on (directly connected to the right side of existing carriers or installed on other DIN rails through extension cables). The controller automatically detects new carriers and modules and enters them into the configuration database without interrupting existing I/O communication.

1: 1. Redundant backup: 4 types of critical I/O cards (such as 8-channel AI/AO, 32 channel DI/DO) support redundant configuration, and can be automatically recognized as redundant pairs by the system when installed in pairs on redundant terminal blocks. In the event of a fault, the switching can be completed within 2 I/O bus scanning cycles (signal overlap<5ms during analog switching, and digital "first on, then off" to ensure uninterrupted power supply to the device), without the need for additional configuration.

Adaptability to harsh environments

Wide temperature operation: All I/O modules operate within a temperature range of -40~70 ℃ (-40~158 ℉) and can be installed in on-site cabinets to reduce the control room footprint and shorten the length of multi-core cable wiring, thereby lowering costs.

Anti interference and anti-corrosion: Complies with ISA-S71.04-1985 G3 level anti-corrosion standard (using normal coating), anti impact (10g half sine wave, 11ms), anti vibration (1mm peak to peak value at 5-13.2Hz, 0.7g at 13.2-150Hz), suitable for complex electromagnetic and environmental interference in industrial sites.

Core product composition and I/O module classification

1. Subsystem composition

The traditional I/O subsystem of DeltaV S-series mainly includes the following components:

I/O carrier: DIN rail installation, carrying all I/O components, providing bus power supply and communication interfaces, divided into 8 slot horizontal carriers and other types.

Power supply: Large capacity AC to 24V DC power supply, providing power for on-site equipment and I/O modules.

I/O module: including analog input/output, discrete input/output and other types, all of which adopt a unified appearance design and are used with dedicated terminal blocks.

Auxiliary accessories: Cable extender (flexible adjustment of carrier installation position), terminal block (standard/fused/redundant type), Mass connection module (compatible with third-party wiring schemes).

2. I/O module types and key parameters

The modules are divided into two categories: analog (AI/AO) and discrete (DI/DO), and support simplex (single-mode) or redundant (redundant) installation. The following are the core module specifications:

(1) Analog input (AI) module

Module type, channel number, signal type, key parameters

AI 4-20mA HART 8 4-20mA (2/4 wire system) resolution 16 bits, accuracy of 0.1% range at 25 ℃, channel optical isolation 1500V DC, supporting HART transparent transmission (scan time 600-800ms/channel)

AI Plus 4-20mA HART 16 4-20mA (2/4-wire system) resolution 16 bits, accuracy 0.2% range, channel optical isolation 1000V DC, supports Mass terminal block and fault detection