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B&R X20DO2633
Product Introduction:
The B&R X20DO2633 is an 8-channel digital output module in source (PNP) configuration from the B&R X20 compact I/O system. It delivers 24 VDC at up to 0.5 A per channel in a source configuration, making it ideal for driving PNP-type field devices, indicator lamps, and solenoid valves that require a positive switching signal. The module uses M12 connector technology for field-side wiring.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Number of Channels | 8 digital outputs |
| Output Type | Source (PNP) |
| Output Voltage | 24 VDC |
| Output Current per Channel | 0.5 A |
| Total Output Current | 4 A (aggregate) |
| Logic Level “1” | 24 VDC (active HIGH — source voltage) |
| Logic Level “0” | 0 V (GND, active LOW) |
| Switching Frequency | Up to 10 kHz |
| Response Time (ON→OFF / OFF→ON) | ≤ 1 ms |
| Isolation Voltage | 500 V DC (channel to channel, channel to backplane) |
| Protection Class | IP20 (front side), IP67 (when mated with M12 connector) |
| Connector Type | M12, 8-pin, A-coded |
| Supply Voltage | 24 VDC via backplane bus |
| Power Consumption (max) | ~2.5 W |
| Operating Temperature | -25 °C to +70 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5 % to 95 % (non-condensing) |
| Dimensions (W × H × D) | 25 mm × 90 mm × 75 mm |
| Weight | ~85 g |
| Certifications | CE, UL, CSA, ATEX (Zone 2) |
Functional Features:
- 8 independent source-type digital outputs — switches +24 VDC to the load
- Per-channel short-circuit protection with automatic current limiting
- Overcurrent protection — shuts down affected channel
- Overtemperature protection — thermal shutdown at > 125 °C junction temperature
- LED channel status indicators (green = ON, red = fault)
- Galvanic isolation (500 V DC) between channels and backplane
- Diagnostic data transfer to controller for fault monitoring
Structural Features:
- Housing: Polycarbonate (PC) + glass fiber (GF)
- M12 8-pin A-coded connector — IP67 rated when mated
- Backplane connector — plug-in to X20 base or X20HB terminal base
- DIN rail mountable (35 mm TS 35)
- Dimensions: 25 × 90 × 75 mm
Working Principle:
The B&R controller sends digital commands via the X20 backplane bus. Each output channel contains a PNP power transistor (source configuration). When the controller sets a channel to logic “1”, the PNP transistor switches ON, connecting the +24 VDC from the internal bus to the output terminal, sourcing current to the external load. When logic “0” is set, the transistor switches OFF, disconnecting the output from +24 VDC (output goes to 0 V / open).
Advantages & Highlights:
- Source (PNP) configuration — directly compatible with standard PNP sensors and actuators without external pull-up resistors
- M12 connector with IP67 — withstands washdown and harsh field conditions
- 0.5 A per channel — sufficient for most solenoid valves and small relays
- Per-channel diagnostics — immediate fault identification
- Compact design — reduces cabinet footprint by up to 50 %
Applicable Industries:
- Automotive manufacturing
- Pharmaceutical packaging
- Food processing
- Semiconductor equipment
- Printing presses
- Woodworking machinery
- Metal forming machines
Installation Requirements:
- Mount on 35 mm DIN rail (EN 60715)
- Maintain ≥ 10 mm clearance above and below for ventilation
- Use M12 8-pin A-coded cables — max length 100 m
- M12 connector torque: 1.5 Nm
- Power supplied via X20 backplane bus (24 VDC) — no external power to outputs
Usage Precautions:
- Maximum 0.5 A per channel — exceeding this triggers overcurrent protection
- Do not apply external voltage to output terminals — the module sources its own 24 VDC
- Do not short-circuit output to GND — this will trigger immediate protection shutdown
- Do not connect inductive loads without flyback diodes (for loads > 10 mH)
- Observe polarity — source outputs deliver +24 VDC; connect load between output and GND
