B&R X20DMF320
16 digital inputs Sink circuit 2 counter inputs with 40 kHz counter frequency ABR incremental encoder Period duration / gate time measurement 16 mixed channels optionally as input or output Source circuit Integrated output protection 3 PWM outputs All channels with 1-wire connections The module is equipped with 16 inputs and 16 mixed channels, optionally as input or output in 1-wire technology. The outputs are designed for a source output circuit, and the inputs are designed for a sink circuit.
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Technical specifications
Short description
| I/O module | 16 digital inputs 24 VDC for 1-wire connections 16 mixed channels, 24 VDC input or output for 1-wire connections |
| Interfaces | 1x X2X Link |
General information
| Diagnostics / Module run/error | Yes, using LED status indicator and software |
| Diagnostics / Outputs | Yes, using LED status indicator and software (output state) |
| Power consumption / Bus | 0.04 W |
| Power consumption / Internal I/O | 2.7 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 | 0x2E86 |
| Status indicators | I/O function per channel, operating state, module status |
| Additional power dissipation caused by actuators (resistive) [W] | 0.312 W |
Digital inputs
| Input filter / Hardware | High-speed inputs: ≤7 μs Standard inputs and mixed channels: ≤100 μs |
| Input filter / Software | Default 0 ms, configurable between 0 and 25 ms in 0.1 ms intervals |
| Switching threshold / Low | <5 VDC |
| Switching threshold / High | >15 VDC |
| Quantity | 6 high-speed inputs, 10 standard inputs 16 mixed channels, configuration as input or output using software |
| Nominal voltage | 24 VDC |
| Input characteristics per EN 61131-2 | Type 1 |
| Input voltage | 24 VDC -15% / +20% |
| Input current at 24 VDC | Channels 1 to 6, high-speed inputs: Typ. 3.2 mA Channels 7 to 16, standard inputs: Typ. 2.4 mA Channels 17 to 32, mixed channel: Typ. 2.4 mA |
| Input circuit | Sink |
| Connection type | 1-wire connections |
| Input resistance | Channels 1 to 6, high-speed inputs: 7.5 kΩ Channels 7 to 16, standard inputs: 10 kΩ Channels 17 to 32, mixed channels: 10 kΩ |
| Additional functions | Channels 1 to 6, high-speed digital inputs: 2x 40 kHz event counting, 2x ABR incremental encoder, 2x period measurement, 2x gate time measurement, 2x counter latch function |
| Insulation voltage between channel and bus | 1210 VDC |
ABR incremental encoder
| Quantity | 2 |
| Encoder inputs | 24 V, asymmetrical |
| Counter size | 16-bit |
| Input frequency | 40 kHz |
| Evaluation | 4x |
Event counters
| Quantity | 2 |
| Signal form | Square wave pulse |
| Evaluation | Rising edge, falling edge or both edges The counter is cyclical. |
| Input frequency | 40 kHz |
| Counter size | 16-bit |
Edge detection / Time measurement
| Counter frequency / Internal | 48 MHz, 24 MHz, 12 MHz, 6 MHz, 3 MHz, 1.5 MHz, 750 kHz, 375 kHz, 187.5 kHz |
| Possible measurements | Period measurement, gate time measurement |
| Signal form | Square wave pulse |
| Evaluation | Positive edge - Negative edge |
| Counter size | 16-bit |
| Length of pause between pulses | ≥100 μs |
| Pulse length | ≥20 μs |
Digital outputs
| Pulse width modulation / Period duration | 1 to 65 ms |
| Pulse width modulation / Pulse duration | 0 to 100% |
| Pulse width modulation / Resolution for pulse duration | 0.1% |
| Switching delay / 0 → 1 | ≤300 μs |
| Switching delay / 1 → 0 | ≤300 μs |
| Switching frequency / Resistive load | Standard outputs: Max. 500 Hz High-speed outputs: Max. 1 kHz |
| Quantity | 13 standard outputs, 3 high-speed outputs All outputs designed as mixed channels, configurable as inputs or outputs using software |
| Variant | Current-sourcing FET |
| Nominal voltage | 24 VDC |
| Switching voltage | 24 VDC -15% / +20% |
| Nominal output current | 0.5 A per channel DO 22 and DO 30: Optional 0.5 or 2 A starting with Rev. B1 |
| Total nominal current | 8 A |
| Connection type | 1-wire connections |
| Output circuit | Source |
| Output protection | Thermal shutdown in the event of overcurrent or short circuit (see value "Short-circuit peak current") |
| Diagnostic status | Output monitoring with 25 ms delay |
| Leakage current when the output is switched off | 3 µA |
| RDS(on) | 78 mΩ |
| Peak short-circuit current | 6.95 A |
| Switch-on in the event of overload shutdown or short-circuit shutdown | Approx. 3 ms (depends on the module temperature) |
| Braking voltage when switching off inductive loads | Typ. 53 VDC |
| Insulation voltage between channel and bus | 1210 VDC |
Electrical properties
| Electrical isolation | Channel isolated from bus Channel not isolated from channel |
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 0.6°C per 100 m |
| Installation elevation above sea level / Maximum | 4000 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 45°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
| Dimensions / Width (pitch) | 27.5⁺⁰.² mm |
| Dimensions / Height | 124 mm |
| Dimensions / Depth | 92 mm |
| Note | Order terminal blocks separately (see section "Order data"). |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
Datasheets
Manuals
3D CAD models
ECAD / EPLAN
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Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.