ABB AI523 B4 1SAP250300R0001 Product Description

Overview

ABB AI523 B4 1SAP250300R0001 is an S500 analog input module for the ABB AC500 PLC system. The module provides 16 analog inputs configured for U, I, RTD and DI signal types, combining analog voltage, current, resistance temperature detector and digital input functions in one distributed automation I/O module. It uses a 24 V DC supply and a housing protection rating of IP20, intended for mounting inside a PLC or control cabinet. The AI523 module is part of ABB S500 distributed automation I/O for AC500 controllers and is used as a replacement spare in existing ABB PLC control installations.

Features

ABB AI523 B4 offers 16 analog input channels supporting voltage U, current I, RTD temperature RTD and digital input DI signals. Analog input resolution is 13 bit including sign, according to the ABB product data. The module supports RTD measurement and digital input operation alongside standard analog voltage and current signals, allowing mixed field signals to be connected through a single S500 I/O module.

The module is powered from 24 V DC, which supplies the S500 I/O electronics and field signal interface. Housing protection is IP20, suitable for enclosed cabinet mounting rather than exposed or wet environments. Operating ambient temperature ranges from 0 to +60 degrees Celsius, and storage temperature ranges from -40 to +70 degrees Celsius. The module weight is 0.125 kg, with product dimensions 62 mm length, 76 mm height and 67.5 mm width. The ABB product designation is AI523, and product code is 1SAP250300R0001. EAN is 4016779655941.

Specs

Product family: ABB S500 distributed automation I/O for AC500 PLC Model: ABB AI523 B4Product code: 1SAP250300R0001ABB type designation: AI523Module type: Analog input module Number of analog inputs: 16Input signal types: U, I, RTD, DIResolution: Analog input 13 bit including sign Supply voltage: 24 V DCProtection degree: Housing IP20Operating ambient temperature: 0 to +60 degrees CelsiusStorage temperature: -40 to +70 degrees CelsiusProduct weight: 0.125 kgProduct dimensions: 62 mm length, 76 mm height, 67.5 mm width Gross weight: 0.149 kgEAN: 4016779655941External commodity code: CN 85389091Compliance: ABB AC500 V2 CPU, AC500 CM, S500 CI, S500 IO and CMS module EU and UK conformity declarations; RoHS and REACH related documentation per ABB product record Product status: ABB S500 AC500 analog I/O module, replacement spare for existing PLC systems

Principle

ABB AI523 B4 operates as a signal acquisition interface between field devices and the AC500 PLC controller. Field transmitters, sensors, RTD probes or digital contact devices connect to the module terminals. The analog input channels condition and convert voltage, current or RTD resistance signals into digital values that the controller reads over the S500 I/O bus. The DI function on the module monitors discrete contact or digital input states alongside analog measurements.

The 24 V DC supply powers the module electronics, input conditioning circuits and internal communication interface. The controller configures each channel through ABB PLC software, selecting the signal type, range, scaling and diagnostics for the connected field device. The module transmits measured analog values and input status to the CPU, which uses them for monitoring, regulation, alarms, interlocks or data logging. Isolation and terminal wiring follow the S500 module design for cabinet-mounted I/O protection against ordinary contact and panel mounting conditions.

Applications

ABB AI523 B4 is used in ABB AC500 PLC cabinets that need mixed analog and discrete field signal acquisition from voltage transmitters, current transmitters, RTD temperature sensors and digital contact inputs. It fits process control, manufacturing lines, packaging machinery, material handling, pumps and fans, heating and ventilation, water and wastewater, utilities, chemical processing, pulp and paper, sugar mill automation, power and energy systems, and general industrial automation retrofit panels. In existing ABB S500 or AC500 installations originally equipped with the AI523 module, the unit serves as a direct replacement analog input spare, compatible with the original S500 I/O base, terminal wiring and PLC configuration.