ABB AX522 S500 8-Input 8-Output Analog I/O Module
Eight inputs and eight outputs provide dense mixed analog I/O, with a specific four-channel boundary for current outputs.
Overview
ABB AX522 is a high-density S500 mixed analog module for AC500 controllers. It provides eight configurable inputs and eight configurable outputs with 12-bit resolution including sign. The inputs can be parameterized for the documented analog functions and may also be used as digital inputs. All eight output channels support voltage operation, while current output is limited to channels C0 through C3. This boundary is essential when comparing AX522 with AX521 or planning a replacement.
Specs
| Manufacturer | ABB |
|---|---|
| Article Number | 1SAP250000R0001 |
| Product Family | AC500 / S500 |
| Module Type | High-density mixed analog input/output module |
| Configurable Inputs | 8 channels; analog or digital-input use |
| Configurable Outputs | 8 channels |
| Voltage Output Channels | C0 through C7 |
| Current Output Channels | C0 through C3 only |
| Output Ranges | -10 to +10 V; 0 to 20 mA; 4 to 20 mA |
| Resolution | 12 bits including sign |
| Channel Indication | 8 input LEDs and 8 output LEDs |
| Required Terminal Unit | TU515 or TU516 |
| Lifecycle | Active |
Features
Functional Highlights
- Combines sixteen configurable I/O channels in one S500 module position.
- Allows the eight input channels to perform supported analog or digital-input functions.
- Provides voltage output across C0 through C7.
- Limits current output to C0 through C3, preventing an incorrect eight-current-output assumption.
- Includes separate channel indication for the eight input and eight output paths.
- Uses TU515 or TU516 termination within the AC500 S500 architecture.
Exact Product Identity
- Manufacturer: ABB
- Model: AX522
- Product Type: AC500 S500 high-density analog I/O module
- Status: Active product
Applications
- High-density AC500 stations with mixed sensor acquisition and analog commands.
- Machine sections where voltage outputs are needed on up to eight channels.
- Systems requiring current output on no more than the first four output channels.
- Distributed S500 nodes consolidating analog and selected digital-input functions.
- Retrofit work where the exact C0-to-C3 current-output allocation is retained.
Lifecycle
- ABB lists article 1SAP250000R0001 as Active.
- The AX522-XC version is a separate orderable environmental variant.
- Before replacement, document which input channels are analog and which are configured as digital.
- Do not assign current output to C4 through C7; ABB reserves current output for C0 through C3.
- Commission all input and output modes, diagnostics and scaling before restoring automatic operation.
FAQ
How many total configurable paths are present on AX522?
AX522 combines eight inputs and eight outputs.
Can AX522 inputs be used only for analog signals?
No. ABB also permits the configurable input channels to be used as digital inputs.
Which AX522 outputs can source a current signal?
Current output is limited to C0 through C3.
Do C4 through C7 still provide analog output?
Yes. They support voltage output, but not the documented current-output mode.
How is AX522 visually monitored during commissioning?
The module provides eight input LEDs and eight output LEDs, together with supply and error indication.
What is the most important AX522 replacement boundary?
Preserve each input mode and remember that only the first four outputs support current operation.
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