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AC500 / S500 ANALOG INPUT MODULE

AI531

1SAP250600R0001

Lifecycle: Active

The ABB AI531 is an eight-channel universal analog input module for AC500/S500 automation systems. Each channel is configured for the connected field signal; the module measures voltage, current, resistance, RTD and thermocouple inputs and transfers the digitized values to the controller.

8 AI Channels

Eight individually configurable analog inputs.

Universal Signals

Voltage, current, resistance, RTD and thermocouple.

High Resolution

16 bits including sign for the standard AI531.

Terminal Unit

Requires TU515 screw or TU516 spring terminal unit.

TECHNICAL SPECIFICATIONS

AI531 Engineering Data

ABB AI531 Datasheet ↗

Product entityABB AI531 universal analog input module

Order number1SAP250600R0001

FunctionAcquires and digitizes eight field analog signals for AC500/S500 control

Channels8 analog inputs, individually configurable

Supported signals0…5 V, 0…10 V, ±50 mV, ±500 mV, ±1 V, ±5 V, ±10 V; 0/4…20 mA, ±20 mA; Pt100, Pt1000, Ni1000, Cu50, resistance up to 50 kΩ; S, T, N, K and J thermocouples

Resolution16 bits including sign

Supply24 V DC process supply, 5 W

Terminal unitTU515 screw connection or TU516 spring connection; ordered separately

LifecycleActive; AI531-XC is the extreme-condition variant, not a successor

Source: ABB AI531 data sheet and AC500 hardware documentation. Final channel range, wiring method and terminal assignment must match the engineering project and field sensor.

FAQ

AI531 Questions Buyers Ask Most

What is ABB AI531 used for?+

ABB AI531 is an AC500/S500 analog input module that converts eight field measurements into controller data. Its channels are configured for voltage, current, RTD, resistance or thermocouple signals; it must be used with a compatible AC500/S500 station, the correct TU515/TU516 terminal unit and matching project parameters.

How many channels and signal types does AI531 support?+

AI531 provides eight individually configurable analog inputs with 16-bit resolution including sign. Depending on channel configuration it accepts voltage, current, resistance, Pt100/Pt1000/Ni1000/Cu50 sensors and S/T/N/K/J thermocouples; the configured range and wiring must match the connected sensor.

Can AI531 generate analog output signals?+

No. AI531 is an eight-channel analog input module; it measures field signals but does not source voltage or current outputs. Applications requiring analog outputs need a compatible AO or AX module selected for the required output range and AC500/S500 terminal configuration.

What is the difference between AI531 and AI531-XC?+

AI531 1SAP250600R0001 is the standard active module, while AI531-XC 1SAP450600R0001 is the active extreme-condition version. Both provide eight universal analog inputs, but the XC environmental qualification and compatible terminal hardware must be confirmed before substitution.

Which terminal unit and supply are required for AI531?+

AI531 plugs into a TU515 screw-terminal or TU516 spring-terminal I/O terminal unit and uses a 24 V DC process supply rated at 5 W. The terminal unit is ordered separately; its connection style, device index, grounding and field wiring must suit the installed AC500/S500 station.

Is hot swapping AI531 automatically safe?+

No. AI531 is an I/O module, but hot swap is allowed only under ABB’s stated AC500 terminal-unit conditions. Field voltages above SELV/PELV must be switched off, the module must be fully latched before restoring voltage, and terminal-unit/device-index and firmware compatibility must be verified.

What must be confirmed before replacing an AI531?+

Before replacing AI531, verify order number 1SAP250600R0001 versus the AI531-XC variant, TU515/TU516 terminal compatibility, 24 V DC supply and grounding, every channel’s signal range and 2-/3-/4-wire or differential wiring, sensor type, project configuration, firmware/device index and allowable maintenance state. A matching model name alone does not guarantee a drop-in replacement.

Is AI531 discontinued or replaced by another model?+

AI531 1SAP250600R0001 is listed by ABB in the Active lifecycle phase. AI531-XC is an environmental variant rather than a successor; nearby AI523, AI561, AI562 or AX modules differ in channel count, signal types, terminal requirements or input/output function and should not be substituted without engineering review.

OFFICIAL DATASHEET

ABB AI531 Product Information

Official ABB product and technical data for AI531, complete order number 1SAP250600R0001.

Product role

AI531 acquires eight universal analog field signals for an ABB AC500/S500 controller. Channel configuration selects voltage, current, RTD, resistance or thermocouple measurement; the installed terminal unit, field wiring and controller project must agree.

COMPLETE MODELAI5311SAP250600R0001Lifecycle: Active

AC500 / S500 SYSTEM RELATIONSHIP

How AI531 fits into the ABB AC500/S500 system

ABB is the manufacturer, AC500/S500 is the automation platform, AI531 is the complete module model, universal analog input is the function, and 1SAP250600R0001 is the standard configuration. The module requires a compatible TU515 or TU516 terminal unit, 24 V DC process supply and channel parameters matched to the connected sensors.

8 AI

Eight configurable input channels.

U / I

Voltage and current ranges.

RTD / TC

Resistance sensors and thermocouples.

TU515 / TU516

Required terminal unit.

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