B&R X20SLX842-1
X20 SafeLOGIC-X controller (Safety+) 8 safe type A digital inputs, 4 pulse outputs, 24 VDC, 4 safe type A digital outputs, 24 VDC, 3 A, OSSD <500 µs, 2 safe type B digital outputs, 24 VDC, 50 mA, OSSD <500 µs
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Technical specifications
Short description
| I/O module | 8 safe type A digital inputs, 4 pulse outputs, 24 VDC, 4 safe type A digital outputs, 24 VDC, 3 A, OSSD <500 µs, 2 safe type B2 digital outputs, 24 VDC, 50 mA, OSSD <500 µs, SafeLOGIC-X technology |
General information
| Diagnostics / Module run/error | Yes, using LED status indicator and software |
| Diagnostics / Outputs | Yes, using LED status indicator and software |
| Diagnostics / Inputs | Yes, using LED status indicator and software |
| Blackout mode / Scope | Module |
| Blackout mode / Function | Programmable |
| Blackout mode / Standalone mode | Yes |
| Power consumption / Bus | 0.4 W |
| Power consumption / Internal I/O | 2.5 W |
| Additional power dissipation caused by actuators (resistive) [W] / Safe digital HS-LS outputs | 0.84 |
| Additional power dissipation caused by actuators (resistive) [W] / Safe digital HS-HS outputs | 0.175 |
| Additional power dissipation caused by actuators (resistive) [W] / Pulse outputs | 0.8 |
| Electrical isolation / Channel - Bus | Yes |
| Electrical isolation / Channel - Channel | No |
| Certifications / CE | Yes |
| Certifications / UKCA | Yes |
| Certifications / CRA (Cyber Resilience Act) | In preparation |
| Certifications / Functional safety | IEC 61508, up to SIL 3 IEC 62061, up to SIL 3 ISO 13849-1, up to Cat. 4 / PL e IEC 61511, up to SIL 3 |
| Certifications / Functional safety #2 | EN 50156-1 |
| Certifications / ATEX | In preparation |
| Certifications / UL | cULus E115267 Industrial control equipment cULus E537419 Engine generator controller |
| B&R ID code | 0x2F20 |
| Status indicators | I/O function per channel, operating state, module status |
Safety characteristics
| Note | See section "Safety characteristics". |
Safe digital inputs
| Input filter / Hardware | ≤150 µs |
| Input filter / Software | Configurable between 0 and 500 ms |
| Switching threshold / Low | <5 VDC |
| Switching threshold / High | >15 VDC |
| Quantity | 8 |
| Variant | Type A |
| Nominal voltage | 24 VDC |
| Input characteristics per EN 61131-2 | Type 1 |
| Input circuit | Sink |
| Input voltage | 24 VDC -15% / +20% |
| Input current at 24 VDC | Min. 2 mA to max. 3.28 mA |
| Input resistance | Min. 7.33 kΩ |
| Error detection time | 100 ms |
| Insulation voltage between channel and bus | 500 Veff |
| Line length between signal source (pulse output or external signal) and input | Max. 60 m with unshielded line Max. 400 m with shielded line |
Safe digital HS-LS outputs
| Quantity | 4 |
| Variant | FET, 1x positive switching, 1x negative switching, type A, output level readable |
| Nominal voltage | 24 VDC |
| Nominal output current | 3 A |
| Total nominal current | 10 A |
| Output protection | See section "Inrush current behavior for output channels". |
| Braking voltage when switching off inductive loads | Max. 90 VDC |
| Error detection | 1 s |
| Insulation voltage between channel and bus | 500 Veff |
| Peak short-circuit current | See section "Inrush current behavior for output channels". |
| Leakage current when the output is switched off | <1 mA |
| RDS(on) | 30 mΩ |
| Switching voltage | I/O power supply minus voltage drop due to RDS(on) |
| Max. switching frequency | See section "Inrush current behavior for output channels". |
| Test pulse length | Max. 500 µs |
| Max. capacitive load | 100 nF |
Safe digital HS-HS outputs
| Quantity | 2 |
| Variant | FET, 2x positive switching, type B2, output level readable |
| Nominal voltage | 24 VDC |
| Nominal output current | 50 mA |
| Total nominal current | 100 mA |
| Output protection | See section "Inrush current behavior for output channels". |
| Braking voltage when switching off inductive loads | Max. 45 VDC |
| Error detection time | 1 s |
| Insulation voltage between channel and bus | 500 Veff |
| Peak short-circuit current | See section "Inrush current behavior for output channels". |
| Leakage current when the output is switched off | <1 mA |
| RDS(on) | 35 Ω |
| Switching voltage | I/O power supply minus voltage drop due to RDS(on) |
| Max. switching frequency | See section "Inrush current behavior for output channels". |
| Test pulse length | Max. 500 µs |
| Max. capacitive load | 100 nF |
Current on loss of ground
| IOUT | <100 µA |
| IGND | <50 mA |
Pulse outputs
| Quantity | 4 |
| Variant | Push-Pull |
| Nominal output current | 50 mA |
| Output protection | Shutdown of individual channels in the event of overload or short circuit |
| Peak short-circuit current | 0.5 A for 120 µs |
| Short-circuit current | 15 mAeff |
| Leakage current when the output is switched off | 0.1 mA |
| RDS(on) | 80 Ω |
| Switching voltage | I/O power supply minus voltage drop due to RDS(on) |
| Total nominal current | 200 mA |
Operating conditions
| Mounting orientation / Horizontal | Yes |
| Mounting orientation / Vertical | Yes |
| Installation elevation above sea level | 0 to 2000 m, no limitation |
| Degree of protection per EN 60529 | IP20 |
Ambient conditions
| Temperature / Operation / Horizontal mounting orientation | 0 to 60°C |
| Temperature / Operation / Vertical mounting orientation | 0 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 2x safety-keyed terminal block separately. Order 1x safety-keyed bus module separately. |
| Pitch | 25⁺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
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Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.