ABB AI523 AC500 16-Channel Analog Input Module
Sixteen configurable U/I/RTD inputs provide dense two-wire analog acquisition for AC500 systems.
Overview
ABB AI523 is a high-density S500 analog input module for the AC500 platform. It provides sixteen individually configurable channels for voltage, current and resistance-temperature signals, with 12-bit resolution including sign. The standard article 1SAP250300R0001 is module-wise galvanically isolated, uses the S500 I/O bus and requires a TU515 or TU516 terminal unit. Channel LEDs and diagnostic functions support commissioning of dense sensor groups without converting the module into a generic digital input card.
Specs
| Manufacturer | ABB |
|---|---|
| Article Number | 1SAP250300R0001 |
| Product Family | AC500 / S500 |
| Module Type | Analog input module |
| Analog Inputs | 16 configurable channels |
| Supported Signals | 0 to 10 V; -10 to +10 V; 0/4 to 20 mA; Pt100/Pt1000; Ni1000 |
| Resolution | 12 bits including sign |
| Conversion Cycle | 2 ms for 16 analog inputs; 1 s with Pt/Ni measurement |
| Process Voltage | 24 V DC |
| Input Filter Time Constant | 100 µs for voltage and current |
| Channel Indication | One LED per input |
| Maximum Analog Cable Length | 100 m for conductor cross-section above 0.14 mm² |
| Required Terminal Unit | TU515 or TU516 |
| Lifecycle | Active |
Features
Core Functions
- Acquires sixteen analog channels in one S500 module.
- Allows each input to be parameterized for the documented voltage, current or RTD range.
- Uses 12-bit conversion with sign support for bipolar measurements.
- Completes a full sixteen-channel voltage/current conversion cycle in 2 ms.
- Provides channel LEDs plus supply and error indication for commissioning.
- Isolates the module from the I/O bus while keeping channels within the module non-isolated from each other.
Product Identity
- Manufacturer: ABB
- Model: AI523
- Product Type: AC500 S500 analog input module
- Status: Active product
Applications
- High-density process-sensor acquisition in AC500 control cabinets.
- Temperature and transmitter groups that mix RTD, voltage and current signals.
- Remote S500 I/O nodes requiring sixteen analog inputs in a compact position.
- Machine monitoring panels with channel-by-channel configuration and indication.
- Expansion projects using TU515 or TU516 field termination.
Lifecycle
- ABB lists standard article 1SAP250300R0001 as Active.
- AI523-XC has its own article number for extreme environmental conditions.
- The terminal unit is part of the installed interface and must be checked separately.
- Preserve channel range, wiring method, filter and diagnostic parameters during replacement.
- Commission every input independently and verify engineering-unit scaling in the controller.
FAQ
How many analog inputs are provided by AI523?
The module provides sixteen configurable analog inputs.
Can AI523 read resistance thermometers?
Yes. ABB documents Pt100, Pt1000 and Ni1000 ranges in addition to voltage and current.
How quickly are voltage and current channels converted?
The conversion cycle for all sixteen inputs is 2 ms; Pt/Ni measurement uses a 1 s cycle.
Which terminal unit is required?
ABB specifies TU515 or TU516 for the standard S500 installation.
Are the sixteen channels individually configurable?
Yes. Each channel can be assigned its supported measuring range through parameterization.
What distinguishes AI523 from AI531?
AI523 prioritizes sixteen-channel density at 12-bit resolution, while AI531 provides eight higher-resolution multifunction inputs including thermocouples.
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