Description
The ABB 1SBP260102R1001, commercially identified as the XC08L1, is a compact local Digital Input / Digital Output (DI/DO) extension unit for ABB AC31 series programmable logic controllers and early Freelance installations. It adds eight 24 V DC discrete inputs and eight discrete outputs (transistor or relay version depending on sub-type) to a CPU or communication/interfacing module such as the CE32 or SA811, connecting via a short proprietary ribbon or flat cable to the controller’s local expansion bus. The XC08L1 is housed in a DIN-rail mountable enclosure and is ideal for small- to medium-machine control, building automation, and auxiliary process skids where additional local I/O is needed close to the controller.h2 Application ScenariosConsider a regional bottling plant still running a reliable ABB AC31-50 CPU to sequence fill-heads, cappers, and conveyor star-wheels. The original panel had exactly enough I/O for the base machine, but a recent packaging-line upgrade added two new pneumatic reject gates and a “Case Present” photo-eye—requiring four extra DI points and two extra DO points. Rather than installing a full remote I/O rack with power supply, communication module, and new cabling, the panel builder simply snaps a ABB 1SBP260102R1001 (XC08L1) onto the DIN rail adjacent to the CPU, connects the included expansion cable to the controller’s local bus port, and lands the new field wires on the XC08L1’s screw terminals. The CPU auto-detects the extension; the programmer assigns the new %IX / %QX addresses in PG2000 / Automation Builder and downloads—no additional communication configuration needed. This scenario shows the XC08L1 solving a classic pain point: adding modest local I/O quickly, cheaply, and with zero network overhead, extending the useful life of proven AC31 hardware.h2
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1SBP260102R1001 (XC08L1) |
| ABB Type Designation | XC08L1 |
| Manufacturer | ABB (Industrial IT / AC31 Series) |
| Product Category | Local Digital I/O Extension Unit (Plug-On / Cable Connected) |
| Digital Inputs (DI) | 8 × 24 V DC (12–30 V DC range), sink/source selectable per common group (typical) |
| Input Current (per ch.) | ≈ 4–7 mA @ 24 V DC |
| Digital Outputs (DO) | 8 × (Transistor NPN/PNP or Relay NO — verify sub-variant by label: XC08L1-Relay vs XC08L1-Transistor) |
| Output Rating (Transistor) | 0.5 A @ 24 V DC (per point, short-circuit protected) |
| Output Rating (Relay) | 2 A @ 250 V AC / 30 V DC (NO contact, resistive) |
| Isolation | I/O circuits isolated from internal bus; outputs group-wise isolated (relay version) or common (transistor version) |
| Connection Method | Screw terminals (field I/O) + 10-/14-way flat-cable to controller local-bus port |
| Indicators | Power LED + per-channel status LEDs (Input ON / Output ON) |
| Supply Voltage | 24 V DC (±20 %) — typically daisy-chained from CPU / PS power supply |
| Operating Temperature | 0 °C to +55 °C (IEC 61131-2, Class I) |
| Mounting | 35 mm DIN Rail (EN 50022) |
| Dimensions (H×W×D) | ≈ 90 × 72 × 60 mm (typical for AC31 compact XC units) |
| Weight | ≈ 0.18 kg |
*Note: Confirm whether your XC08L1 is the transistor (solid-state) or relay-output version by checking the removed unit’s label before ordering — mixing types can affect load compatibility.h2 Technical Principles and Innovative ValuesThe XC08L1 is designed as a low-overhead local expansion for the AC31 ecosystem.
- Innovation Point 1 – Bus-Powered Local Expansion with Auto-Enumeration: The 1SBP260102R1001 connects to the AC31 CPU or CE32 extension interface via a short parallel/expansion cable. The controller automatically detects the module at boot and assigns consecutive I/O addresses—no GSD file import, no baud-rate setting, no terminator resistor. This makes adding I/O genuinely plug-and-play within the local rack area.
- Innovation Point 2 – Mixed DI/DO in Minimal Footprint: Packaging 8 DI + 8 DO in a 72 mm wide housing, the XC08L1 conserves DIN-rail space compared to installing separate DI and DO slices. Each DI channel has LED indication and a typical 3 ms filter to reject contact bounce, while DO channels feature short-circuit / overload protection (transistor version) or contact-rated isolation (relay version), reducing the need for auxiliary interposing relays on small loads.
- Innovation Point 3 – Seamless Integration with Legacy AC31 Engineering Tools: The XC08L1 is natively supported in ABB PG2000, Control Builder F (Freelance older builds), and Automation Builder (legacy mode). I/O symbols can be drag-dropped into the variable table; forcing/overriding outputs for commissioning is done through the standard online debug window—no special driver or add-on package required.
