B&R X20DOF321
16 digital outputs Sink circuit 1-wire connections Integrated output protection The module is equipped with 16 outputs for 1-wire connections. The module is designed for a sink output circuit.
Lifecycle & replacement
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Technical specifications
Short description
| I/O module | 16 digital outputs 24 VDC for 1-wire connections |
General information
| Diagnostics / Module run/error | Yes, using LED status indicator and software |
| Diagnostics / Outputs | Yes, using LED status indicator and software (output error status) |
| Power consumption / Bus | 0.25 W (Rev. C0: 0.29 W) |
| Power consumption / Internal I/O | 0.4 W |
| Certifications / CE | Yes |
| Certifications / UKCA | Yes |
| Certifications / CRA (Cyber Resilience Act) | In preparation |
| Certifications / UL | cULus E115267 Industrial control equipment |
| B&R ID code | 0x292A |
| Status indicators | I/O function per channel, operating state, module status |
| Additional power dissipation caused by actuators (resistive) [W] | +0.48 |
Digital outputs
| Switching delay / 0 → 1 | <300 µs |
| Switching delay / 1 → 0 | <300 µs |
| Switching frequency / Resistive load | Max. 500 Hz |
| Switching frequency / Inductive load | See section "Switching inductive loads". |
| Execution | FET current-sinking |
| Nominal voltage | 24 VDC |
| Switching voltage | 24 VDC -15% / +20% |
| Nominal output current | 0.5 A |
| Total nominal current | 8 A |
| Connection type | 1-wire connections |
| Output circuit | Sink |
| Output protection | Thermal shutdown in the event of overcurrent or short circuit (see value "Short-circuit peak current") Internal freewheeling diode for switching inductive loads (see section "Switching inductive loads") |
| Diagnostic status | Output monitoring with 10 ms delay |
| Leakage current when the output is switched off | 75 µA |
| RDS(on) | 120 mΩ |
| Peak short-circuit current | <7 A |
| Switch-on in the event of overload shutdown or short-circuit shutdown | Approx. 10 ms (depends on the module temperature) |
| Braking voltage when switching off inductive loads | Typ. 50 VDC |
| Insulation voltage between channel and bus | 500 Veff |
Electrical properties
| Electrical isolation | Channel isolated from bus Channel not isolated from channel and I/O power supply |
Operating conditions
| Mounting orientation / Horizontal | Yes |
| Mounting orientation / Vertical | Yes |
| Installation elevation above sea level / 0 to 2000 m | No limitation |
| Installation elevation above sea level / >2000 m | Reduction of ambient temperature by 0.5°C per 100 m |
| Degree of protection per EN 60529 | IP20 |
Ambient conditions
| Temperature / Operation / Horizontal mounting orientation | -25 to 60°C |
| Temperature / Operation / Vertical mounting orientation | -25 to 50°C |
| Temperature / Derating | See section "Derating". |
| Temperature / Storage | -40 to 85°C |
| Temperature / Transport | -40 to 85°C |
| Relative humidity / Operation | 5 to 95%, non-condensing |
| Relative humidity / Storage | 5 to 95%, non-condensing |
| Relative humidity / Transport | 5 to 95%, non-condensing |
Mechanical properties
| Note | Order 1x terminal block X20TB1F separately. Order 1x bus module X20BM11 separately. |
| Pitch | 12.5⁺⁰.² mm |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
Datasheets
Manuals
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Industrial Automation Co. stocks, sources, and repairs B&R parts — new, refurbished, or exchange units with warranty.
Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.