B&R X20CM4323
4 digital outputs Control of PWM output signals based exactly on NetTime 4x oversampling output functions Integrated output protection 24 VDC and GND for actuator power supply The module has digital outputs for connecting electromechanical loads (e.g. valves and relays) and additional functions such as edge generation. With a resolution down to 125 ns, the module makes it possible to set switching operations at exactly specified moments. The following operating modes can optionally be supplemented with PWM functionality: Direct I/O Oversampled I/O Edge generator Edge generator in toggle operation for output patterns such as digital cam switches (e.g. digital cam switch of function block "ASMcDcsTimedDigitalCamSwitch") Additional functions: PWM modulation of outputs for setting the overexcitation and holding current. Configuration of each channel by specifying PWM period duration Control value for overexcitation current, holding current and overexcitation time Possibility of disabling high-speed cutoff
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Technical specifications
Short description
| I/O module | 4 digital outputs for switching electromechanical loads, pulse width modulation |
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 | 0.01 W |
| Power consumption / Internal I/O | 1.4 W |
| Power consumption / External I/O | Corresponding to external load |
| 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 |
| B&R ID code | 0xEC21 |
| Status indicators | I/O function per channel, operating state, module status |
| Additional power dissipation caused by actuators (resistive) [W] | - |
Digital outputs
| Pulse width modulation / Period duration | 1 ms (1 kHz) or 20 µs (50 kHz) |
| Pulse width modulation / Pulse duration | 0 to 100% |
| Pulse width modulation / Resolution for pulse duration | 1% |
| Output voltage / Minimum | 18 VDC |
| Output voltage / Nominal | 24 VDC |
| Output voltage / Maximum | 48 VDC |
| Protective circuit / External | 24 VDC power supply - maximum current 10 A (melting fuse) |
| Nominal voltage | 24 VDC |
| Nominal output current | 0.75 A |
| Total nominal current | 3 A |
| Connection type | 1-wire connections |
| Output circuit | Sink |
| Output protection | Thermal shutdown in the event of overcurrent or short circuit, integrated protection for switching inductive loads |
| Inrush current | 1.5 A for max. 25 ms |
| Braking voltage when switching off inductive loads | 27 VDC |
| Reverse polarity protection | No (must be protected externally) |
Electrical properties
| Electrical isolation | Bus isolated from channel and internal I/O power supply Channel not isolated from channel and internal 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 50°C |
| Temperature / Operation / Vertical mounting orientation | 0 to 40°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
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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.