Emerson DeltaV™ S-series Traditional I/O

Accuracy: Full scale error ≤ ± 0.1% (25 ℃ environment), temperature drift ≤ ± 0.005% full scale/℃.

Sampling rate: Single channel up to 100Hz (high-speed AI models), regular models ≤ 50Hz, supports configurable "channel scanning period" (such as 100ms/200ms).

Analog Output (AO) module:

Output signal types: current signal (4-20mA, load resistance ≤ 500 Ω), voltage signal (0-10V, load resistance ≥ 1k Ω).

Resolution: 16 bits.

Accuracy: Full scale error ≤ ± 0.1% (25 ℃ environment), output ripple ≤ 10mV (peak to peak).

Response time: From 0% to 100% full-scale output ≤ 100ms (current output), ≤ 50ms (voltage output).

Installation and Configuration Guide

Hardware installation process

Installation environment requirements: The module needs to be installed in a standard 19 inch industrial control cabinet, avoiding direct sunlight, dust, corrosive gases, and severe vibrations; The control cabinet needs to reserve a heat dissipation space (with a distance of ≥ 50mm between the top and bottom of the module). If the ambient temperature exceeds 55 ℃, a heat dissipation fan or air conditioner should be equipped.

Installation steps:

First, fix the I/O base (matching the module model) onto the DIN rail of the control cabinet, ensuring that the base is securely installed and not loose.

Connect the power cable (usually 24V DC, pay attention to positive and negative polarity) and communication cable (connected to the I/O link of the DeltaV/Ovation system, such as PROFIBUS, EtherNet/IP) to the base.

Align the module with the card slot on the base, insert it vertically and press it until it makes a "click" sound, and confirm that the module is in good contact with the base (when hot plugging, the signal circuit of the module needs to be disconnected first before plugging).

Connect on-site signal lines: Digital signals use shielded twisted pair cables (with a single end grounded on the shielding layer), while analog signals use shielded twisted pair cables (with both ends grounded on the shielding layer) to avoid parallel laying with power cables (spacing ≥ 300mm).

System configuration steps

Software tool: Use DeltaV Explorer (adapted to DeltaV system) or Ovation Configuration Studio (adapted to Ovation system) for module configuration.

Configuration process:

Add the "S series I/O module" to the software, select the corresponding module model (such as SDI810, SAI830), and assign a unique "module address" (consistent with the hardware dip switch settings to avoid address conflicts).

Configure channel parameters:

Digital input module: Set the "input type" (dry/wet contact), "edge detection" (rising/falling edge), and "filtering time" (such as 1ms/10ms to suppress noise).

Digital output module: Set the "output type" (transistor/relay) and "fault handling" (such as output hold/reset in case of fault).

Analog input module: Set the "signal type" (4-20mA/Pt100/J thermocouple), "range" (such as 4-20mA corresponding to 0-100kPa pressure), and "cold end compensation method" (internal compensation/external compensation, thermocouple input).

Analog output module: Set the "signal type" (4-20mA/0-10V), "range", and "manual output value" (for debugging purposes).

Download the configuration file to the module, and after completion, monitor the module's "online status" through software to confirm that there are no configuration errors (such as "address conflicts" or "signal mismatches").

Functional characteristics and application scenarios

Core functional highlights

Signal conditioning function: The analog I/O module has a built-in "signal conditioning circuit" that can amplify and filter weak signals collected on site (such as mV level signals from thermocouples) to reduce noise interference; Simultaneously supporting "disconnection detection" (such as triggering a fault alarm when the RTD is open or the current signal is disconnected).

Redundancy configuration support: Some key modules (such as analog input and digital output modules) support "1:1 redundancy", which means that the main module and backup module run simultaneously. When the main module fails, the backup module automatically switches (switching time ≤ 100ms) to ensure that the control circuit is not interrupted. This is suitable for safety critical scenarios (such as emergency shutdown systems in petrochemicals).

System Integration: The module seamlessly integrates with the DeltaV/Ovation system, supporting "global database" sharing. The signals collected by the module can be directly used for the system's control algorithms, alarm logic, and historical data storage; Simultaneously supporting the OPC protocol, it can communicate with third-party systems (such as MES production execution systems) to achieve data exchange.

Safety certification: Some modules have passed "ATEX certification" and "IECEx certification" and are suitable for explosive hazardous environments (such as Zone 2, Class I Division 2); Simultaneously complying with the "EN 61000" electromagnetic compatibility (EMC) standard, it has strong resistance to electromagnetic radiation and electrostatic discharge.