B&R X20CM1941
Resolver input (differential), with angular position and cyclic counter 14-bit resolution for the angular position ABR output (configurable) The module is equipped with a resolver input and a configurable ABR output.
Lifecycle & replacement
No manufacturer-published lifecycle data for B&R part numbers is indexed here yet. Ask IAC to check availability and an upgrade path.
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Technical specifications
Short description
| I/O module | 1 resolver input, 1 ABR output |
General information
| Diagnostics / Module run/error | Yes, using LED status indicator and software |
| Diagnostics / Resolver input (OK, open circuit) | Yes, using LED status indicator and software |
| Diagnostics / Resolver input (counting direction) | Yes, using LED status indicator and software |
| Power consumption / Bus | 0.01 W |
| Power consumption / Internal I/O | 1.5 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 / KC | Yes |
| B&R ID code | 0x1E85 |
| Status indicators | Input, output, operating state, module status |
| Additional power dissipation caused by actuators (resistive) [W] | - |
Resolver inputs
| Reference output / Output voltage | 3.4 Veff |
| Reference output / Output current | Max. 50 mAeff |
| Reference output / Frequency | 10 kHz |
| Resolver transformation ratio | 0.5 (±10%) |
| Type | Differential |
| Angular position resolution | 14-bit |
| Short-circuit protection (reference output) | Yes |
| Input impedance | 10.4 kΩ - j 11.1 kΩ |
| Resolver type | BRX BRT with limitations |
ABR output
| ABR output (starting with firmware version 5) / 8-bit to 12-bit | 3500 revolutions/minute |
| ABR output (up to firmware version 4) / 8-bit | Max. 2343 revolutions/minute |
| ABR output (up to firmware version 4) / 9-bit | Max. 1171 revolutions/minute |
| ABR output (up to firmware version 4) / 10-bit | Max. 585 revolutions/minute |
| Encoder signal | RS422 |
| Type | ABR differential |
| Short-circuit proof | Yes (reference output) |
Electrical properties
| Electrical isolation | Bus isolated from input/output Channel not isolated from channel, and input/output not isolated from 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 | 0 to 55°C |
| Temperature / Operation / Vertical mounting orientation | 0 to 50°C |
| Temperature / Derating | - |
| Temperature / Storage | -25 to 70°C |
| Temperature / Transport | -25 to 70°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 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
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.