B&R X20DI2377
2 digital inputs Sink connection 3-wire connections 2 counter inputs with 50 kHz counter frequency Gate measurement 24 VDC and GND for sensor supply Software input filter can be configured for entire module The module is equipped with two inputs for 3-wire connections. Both inputs can be configured as event counters. Gate measurement is only ever possible on one channel. This module is designed for X20 6-pin terminal blocks. If needed (e.g. for logistical reasons), the 12-pin terminal block can also be used.
Lifecycle & replacement
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Technical specifications
Short description
| I/O module | 2 digital inputs 24 VDC for 3-wire connections, special functions |
General information
| Diagnostics / Module run/error | Yes, using LED status indicator and software |
| Power consumption / Bus | 0.15 W |
| Power consumption / Internal I/O | 0.82 W |
| Certifications / CE | Yes |
| Certifications / UKCA | Yes |
| Certifications / CRA (Cyber Resilience Act) | In preparation |
| Certifications / ATEX | Zone 2, II 3G Ex nA nC IIA T5 Gc IP20, Ta (see X20 user's manual) FTZÚ 09 ATEX 0083X |
| Certifications / UL | cULus E115267 Industrial control equipment |
| Certifications / HazLoc | cCSAus 244665 Process control equipment for hazardous locations Class I, Division 2, Groups ABCD, T5 |
| Certifications / DNV | Temperature: B (0 to 55°C) Humidity: B (up to 100%) Vibration: B (4 g) EMC: B (bridge and open deck) |
| Certifications / CCS | Yes |
| Certifications / LR | ENV1 |
| Certifications / KR | Yes |
| Certifications / ABS | Yes |
| Certifications / BV | EC33B Temperature: 5 - 55°C Vibration: 4 g EMC: Bridge and open deck |
| Certifications / KC | Yes |
| B&R ID code | 0x1B8E |
| Status indicators | I/O function per channel, operating state, module status |
| Additional power dissipation caused by actuators (resistive) [W] | - |
Digital inputs
| Input filter / Hardware | ≤10 μs |
| Input filter / Software | Default 0 ms, configurable between 0 and 25 ms in 0.2 ms intervals |
| Switching threshold / Low | <5 VDC |
| Switching threshold / High | >15 VDC |
| Nominal voltage | 24 VDC |
| Input characteristics per EN 61131-2 | Type 1 |
| Input voltage | 24 VDC -15% / +20% |
| Input current at 24 VDC | Typ. 10.5 mA |
| Input circuit | Sink |
| Connection type | 3-wire connections |
| Input resistance | Typ. 2.23 kΩ |
| Additional functions | 50 kHz event counting, gate measurement |
| Insulation voltage between channel and bus | 500 Veff |
Event counters
| Quantity | 2 |
| Signal form | Square wave pulse |
| Evaluation | Each positive edge, cyclic counter |
| Input frequency | Max. 50 kHz |
| Counter 1 | Input 1 |
| Counter 2 | Input 2 |
| Counter frequency | Max. 50 kHz |
| Counter size | 16-bit |
Gate 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 |
| Number of gate time measurements | 1 |
| 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 |
| Supported inputs | Input 1 or input 2 |
Sensor power supply
| Power consumption | Max. 12 W |
| Voltage | Module power supply minus voltage drop for short-circuit protection |
| Voltage drop for short-circuit protection at 500 mA | Max. 2 VDC |
| Summation current | 0.5 A |
| Short-circuit proof | Yes |
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 0.5°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 | - |
| 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 X20TB06 or X20TB12 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
ECAD / EPLAN
Certificates
- 2226379 CSA Certificate of Compliance X20 X67
- 64331_A1 BV Certificate of Compliance X20
- 64331_A1 BV Certificate of Compliance X20(de)
- ABS Certificate of Product Design Assessment - X20 IO Series
- CCS Type Approval Certificate - X20
- E115267 UL Certificate of Compliance X20
- EU Data Act - X20 IO - Connected Product Information Notice
- EU Declaration ATEX X20
- EU Declaration of conformity PLC X20
- FTZU 09 ATEX 0083X
- KR Type Approval Certificate MIL39390-AC003 (X20 System)
- Lloyds Register (X20 only)
Get a quote for a replacement
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.