Product Core Brief
- Model: XO16N1-B20 / XO16N1-C3.0 (XO 16 N1, 1SBP260105R1001)
- Brand: ABB
- Series: CS31 digital extension modules
- Core Function: Provides 16 transistor outputs for switching 24 VDC loads on an ABB CS31 system bus.
- Product Type: Transistor Digital Output Extension Module
- Key Specs: 16 outputs | 24 VDC / 0.5 A per channel | External 24 VDC supply | CS31 bus
- Condition: New Original / New Surplus
Product Introduction
ABB XO16N1-B20 XO16N1-C3.0 is a CS31 digital output extension module that adds 16 transistor outputs to an ABB CS31 distributed I/O system. It is commonly identified under the XO 16 N1 family and part number 1SBP260105R1001.
The replacement module switches 24 VDC loads at up to 0.5 A per channel and requires an external 24 VDC supply. It fits applications where relay outputs are unnecessary and compact solid-state switching is preferred. Confirm the revision suffix and CS31 address before installation.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Full Order Code | XO16N1-B20 / XO16N1-C3.0 / XO 16 N1 / 1SBP260105R1001 |
| Module Type | Digital extension, transistor output |
| Output Channels | 16 transistor outputs |
| Output Rating | 24 VDC, 0.5 A per channel |
| Supply Voltage | External 24 VDC |
| Bus Interface | CS31 system bus |
| Mounting | DIN-rail / panel-mounted extension |
| Typical Use | Discrete 24 VDC switching, remote DO expansion |
| Supply Status | Legacy / New Surplus |
Quality Control Process (Dynamic)
- Visual inspection: Check transistor output terminals, CS31 bus connector, supply terminals, and PCB for heat marks or oxidation.
- Continuity check: Use a Fluke multimeter to verify output terminal integrity and absence of short circuits between channels.
- Output test: Apply 24 VDC supply and energize each channel individually to confirm switching and LED status.
- Load verification: Connect a resistive 24 VDC test load within 0.5 A per channel and measure voltage drop for abnormal heating.
- Bus validation: Confirm CS31 addressing, module recognition, and correct output mapping before anti-static packing.
Replacement Pitfall Guide (Dynamic)
❗ Revision suffix matters. XO16N1-B20 and XO16N1-C3.0 belong to the same XO 16 N1 family, but connector layout, firmware, or terminal labeling may differ.
❗ Not a relay output module. This is a 24 VDC transistor output. It cannot directly replace XO 08 R1 or XO 08 R2 relay modules.
❗ 0.5 A per channel limit. Inductive loads such as solenoid valves and small relays may need flyback diodes or external interposing relays.
❗ CS31 address conflict. Wrong bus addressing causes missing outputs or communication faults on the CS31 segment.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| XO16N1-B20 / XO16N1-C3.0 (1SBP260105R1001) | XO 16 N1 (1SBP260105R1001) | Direct | Same CS31 16-channel transistor output; confirm revision and bus address. |
| / .0 | XO 08 Y1 | Needs Adaptation | 8-channel transistor output, 24 VDC / 2 A; channel count and wiring differ. |
| / .0 | XO 08 R1 / XO 08 R2 | Not Interchangeable | Relay outputs; different switching principle and load compatibility. |
| / .0 | XC 08 L1 | Not Interchangeable | 8-channel configurable I/O, not a 16-channel DO replacement. |
Benchmark notes:
- 16 transistor outputs, 24 VDC / 0.5 A per channel, external 24 VDC supply.
- CS31 system-bus digital extension for ABB series 40/50 central units and compatible remote stations.
Send a nameplate photo and the installed CS31 base unit model, and we can confirm exact revision compatibility before dispatch.
