Eight 24 VDC Digital Inputs
The Allen-Bradley 1734-IB8 provides eight sinking digital input channels for receiving on/off signals from compatible industrial sensors, switches and other sourcing field devices.
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Allen-Bradley
Allen-Bradley 1734-IB8 POINT I/O Digital Input Module Industrial Supplier
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Allen-Bradley |
| Model Number | 1734-IB8 |
| Product Category | Digital Input Module |
| Manufacturer | Rockwell Automation |
| Product Family | POINT I/O |
| Bulletin | 1734 |
| Number of Digital Inputs | 8, One Group of 8 |
| Input Circuit Type | DC Sinking Inputs |
| Compatible Field Signal Type | 24 VDC Sourcing Signals, Including Appropriately Rated PNP Sensors |
| Nominal On-State Input Voltage | 24 VDC |
| On-State Voltage Range | 10 to 28.8 VDC |
| Maximum Off-State Voltage | 5 VDC |
| Nominal On-State Input Current | 4 mA at 24 VDC |
| On-State Input Current Range | 2 to 5 mA |
| Nominal Input Impedance | 3.6 kΩ |
| Input Filter Time | 0.5 ms Hardware Plus 0 to 65 ms User-Selectable Filter, Both Directions |
| POINTBus Current | 75 mA Maximum at 5 VDC |
| Maximum Power Dissipation | 1.6 W at 28.8 VDC |
| Maximum Thermal Dissipation | 5.5 BTU/hr at 28.8 VDC |
| Field Supply Voltage | 24 VDC Nominal, 10 to 28.8 VDC Range |
| Field-to-System Isolation | 50 V Continuous, Reinforced Insulation; Type Tested at 2500 VDC for 60 Seconds |
| Channel Status Indicators | 8 Yellow Input Status LEDs |
| Module Status Indicator | Green/Red LED |
| Terminal Base | 1734-TB or 1734-TBS |
| Keyswitch Position | 1 |
| Field Wiring Terminals | Input 0 to Input 7 |
| Enclosure Type | Open-Style; Install in an Appropriate Control Enclosure |
| Mounting | DIN Rail via Compatible POINT I/O Terminal Base |
| Approximate Module Width | 12 mm |
| Approximate Weight | 32.32 g |
| Operating Temperature | -20 to +55°C |
| Nonoperating Temperature | -40 to +85°C |
| Relative Humidity | 5 to 95%, Noncondensing |
| UPC | 612598308576 |
| Product Lifecycle | Active According to Rockwell Automation Product Information |
| Manufacturer Documentation | 1734-SG001, 1734-IN051 and 1734-UM001 |
Key Features
Compact POINT I/O Architecture
The module is part of the Rockwell Automation POINT I/O distributed I/O platform and occupies a narrow installation footprint when assembled with the required compatible terminal base and network adapter.
Configurable Input Filtering
Both off-to-on and on-to-off input transitions support a hardware filter plus selectable digital filtering, helping engineers configure signal response for the application.
Individual Channel Status LEDs
Eight yellow input indicators provide visual channel-state information, while a green/red module status indicator assists with commissioning and routine troubleshooting.
Flexible Distributed I/O Integration
The 1734-IB8 can operate as part of a properly configured POINT I/O station with compatible communication adapters, allowing digital signals to be collected near industrial equipment.
Industrial Electrical Ratings
With a 10 to 28.8 VDC input range, reinforced field-to-system isolation and an operating temperature specification of -20 to +55°C, the module supports suitably enclosed industrial control installations.
Applications
- PLC digital input expansion
- Distributed industrial I/O systems
- PNP proximity sensor signal acquisition
- Photoelectric sensor status monitoring
- Machine limit switch and position feedback
- Packaging and assembly line automation
- Conveyor and material handling control
- POINT I/O system maintenance and module replacement
Purchase Information
We support online purchase of the Allen-Bradley 1734-IB8 Digital Input Module. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is the Allen-Bradley 1734-IB8?
It is an eight-channel, 24 VDC sinking digital input module belonging to the Allen-Bradley POINT I/O distributed I/O family.
How many input channels does the module provide?
The 1734-IB8 provides eight digital inputs numbered 0 through 7, arranged as one group of eight.
Is 1734-IB8 a sinking or sourcing input module?
It is a sinking input module, intended for appropriately rated sourcing field signals such as many three-wire PNP proximity sensors. Confirm wiring compatibility before installation.
What is the input voltage range?
The nominal input voltage is 24 VDC, with a specified on-state voltage range of 10 to 28.8 VDC.
What is the nominal input current?
The nominal on-state input current is 4 mA at 24 VDC, with an on-state operating range of 2 to 5 mA.
Can the input filter delay be configured?
Yes. The published specification provides a 0.5 ms hardware filter plus an additional user-selectable filtering interval of 0 to 65 ms for input transitions.
What terminal base does the 1734-IB8 require?
Rockwell Automation specifies the 1734-TB or 1734-TBS POINT I/O terminal base. Check whether the required terminal base is included in the purchased item.
Does the module provide LED indicators?
Yes. It has eight yellow input status indicators and a green/red module status indicator.
How much POINTBus current does it require?
The maximum POINTBus current is 75 mA at 5 VDC. Include this value in the overall POINT I/O power budget.
Can 1734-IB8 connect directly to Ethernet?
No. The input module requires an appropriate POINT I/O station and compatible communication adapter for network connectivity. It does not contain an independent Ethernet port.
Is 1734-IB8 the same as 1734-IB8S?
No. The 1734-IB8 is a standard digital input module, while the 1734-IB8S belongs to the POINT Guard I/O safety input family. They must not be treated as interchangeable safety components.
What should be checked before ordering?
Confirm catalog number 1734-IB8, required series and firmware compatibility, eight sinking inputs, 24 VDC field supply, 1734-TB or 1734-TBS terminal base, keyswitch position 1, POINTBus power budget, communication adapter and enclosure conditions.
Need help confirming a model?
Send us your part number and technical requirements.
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