B&R 7DO164.70
Product Type: Digital Output Module
Model Number: 7DO164.70
Product Introduction:
The B&R 7DO164.70 is a 16-channel digital output module from the X20 series. It provides 16 independent PNP transistor outputs rated at 24 V DC / 0.5 A per channel for controlling solenoid valves, contactors, indicator lamps, and other discrete loads in industrial automation.
Detailed content
Technical Specifications:
- Number of Channels: 16
- Output Type: PNP transistor (sourcing)
- Output Voltage: 24 V DC (nominal)
- Output Current per Channel: 0.5 A (maximum)
- Total Current (All Channels): 4 A (maximum)
- Switching Frequency: 10 kHz (maximum per channel)
- Response Time (ON): ≤ 0.2 ms
- Response Time (OFF): ≤ 0.2 ms
- Supply Voltage: 24 V DC (nominal), range 20.4 V to 28.8 V
- Power Consumption: ≤ 3.0 W
- Isolation: Channel-to-channel galvanic isolation, 500 V DC
- Isolation to Bus: 500 V DC
- Operating Temperature: 0 °C to +55 °C
- Storage Temperature: -25 °C to +70 °C
- Relative Humidity: 5% to 95% (non-condensing)
- Dimensions (W x H x D): 22.5 mm x 120 mm x 79.5 mm
- Weight: Approximately 150 g
Functional Features:
- 16 independent PNP (sourcing) outputs
- Short-circuit protection per channel (electronic fuse)
- Overload protection per channel
- Over-temperature protection
- Diagnostic LED per channel
- Software-configurable Active HIGH / Active LOW
- Compatible with B&R Automation Studio
Structural Characteristics:
- DIN rail mounting (TS 35)
- Plug-in terminal connectors with spring clamps
- ABS plastic housing
- Front-facing LED status indicators (16 channels)
- X20 bus connector on bottom edge
Working Principle:
The controller writes digital states to the module via the X20 bus. Each output channel is controlled by an NPN transistor in a PNP sourcing configuration. When the controller sets a bit to “1”, the transistor conducts, connecting the 24 V DC supply to the output terminal. When set to “0”, the transistor is off. Each channel includes an electronic fuse for short-circuit protection. Optocouplers provide galvanic isolation between channels and the bus.
Advantages & Highlights:
- 16 channels in compact X20 format
- 0.5 A per channel handles standard solenoid valves and small relays
- Electronic fuse provides fast fault response
- PNP sourcing is standard in European automation
- LED diagnostics simplify maintenance
Applicable Industries:
- Valve control in process plants
- Indicator and signal lamp control
- Relay and contactor switching
- General discrete output in machine builders
- Conveyor and sorting system actuation
Installation Requirements:
- Mount on DIN rail (TS 35 x 7.5 or TS 35 x 15)
- Connect to X20 base module or X20 system bus
- Wire PNP loads: connect +24 V to load, load to output terminal, 0 V to power supply return
- Use flyback diodes across inductive loads (relays, solenoids)
- Wire gauge: minimum 0.5 mm² for 0.5 A per channel
Usage Precautions:
- Do not exceed 0.5 A per channel or 4 A total module current
- Always use flyback diodes for inductive loads
- Do not apply external voltage to output terminals
- Verify Active HIGH / Active LOW setting matches load wiring












