Product Introduction
The Allen-Bradley 1734-OB2EP Digital Output Module is a compact DC sourcing output module designed for use in Point I/O systems. It provides two NPN sourcing outputs (24V DC) for driving small actuators, relays, or indicator devices.
This module is ideal for distributed control applications that require tight installation spaces, reliable output switching, and robust module-level protection. The 1734-OB2EP integrates with the POINTBus interface and supports installation in DIN rail or panel-mounted control systems. Its design ensures efficient operation, low heat, and precise output control, suitable for industrial environments.
Product Specifications
| Parameter |
Description |
| Product Name |
Digital Output Module |
| Model |
1734-OB2EP |
| Product Series |
Point I/O (Bul. 1734) |
| Component Type |
Fieldbus I/O |
| Number of Digital Outputs |
2 |
| Digital Output Type |
DC, sourcing (NPN) |
| Digital Output Range |
10 – 28.8V DC |
| Rated Current per Digital Output, Max |
2 A |
| Rated Current per Module, Max |
4 A |
| Power Supply |
24V DC |
| Operating Temperature, Max |
55 °C |
| Operating Temperature, Min |
-20 °C |
| Storage Temperature, Max |
85 °C |
| Storage Temperature, Min |
-40 °C |
| Relative Humidity, Max |
95 %RH |
| Dimensions |
56.6 × 12.1 × 77.5 mm |
| Weight |
0.033 kg |
Applications
● Distributed control systems
Provides reliable 24V DC sourcing outputs for small actuators, relays, or indicator devices.
● Industrial automation
Used in distributed I/O networks where space is limited and compact modules are required.
● Panel and DIN rail installations
Flexible mounting supports industrial control cabinets and localized control points.
● Machine and process control
Controls devices that operate within the 10–28.8V DC range, suitable for standard small DC loads.
● System expansion
Adds additional DC output channels to Point I/O systems without major rewiring.
Advantages
● Compact and lightweight
Easy to integrate into tight control panel spaces.
● Reliable DC sourcing outputs
Each output can handle up to 2 A, with 4 A total module capacity, ensuring stable control of connected devices.
● Flexible voltage range
Operates between 10 and 28.8V DC, compatible with common small DC loads.
● Efficient and low-heat design
Reduces thermal stress in distributed I/O or compact installations.
● Seamless integration
Compatible with POINTBus interface and Point I/O systems for distributed control.
● Industrial-grade durability
Designed for operation in environments with -20 °C to 55 °C temperatures and up to 95% RH.
FAQ
1. What is the primary function of this module?
It provides two 24V DC sourcing outputs to control small actuators, relays, or indicator lamps in a Point I/O system.
2. How many digital outputs are available?
The module has 2 independent outputs, allowing separate devices to be controlled simultaneously.
3. What type of outputs does the module use?
It uses NPN sourcing DC outputs, delivering positive voltage to connected devices.
4. What voltage range is supported for the outputs?
Each output operates within 10–28.8V DC, compatible with standard small DC loads.
5. What is the maximum current per output?
Each output can carry up to 2 A, providing sufficient capacity for small actuators and indicators.
6. What is the maximum total current for the module?
The module can handle up to 4 A total, allowing both outputs to operate simultaneously at full load.
7. Can this module be installed in distributed control architectures?
Yes, it integrates with POINTBus backplanes, allowing outputs to be located close to field devices to reduce wiring complexity.
8. Is it compatible with Allen-Bradley Point I/O systems?
Yes, it works seamlessly with other Point I/O modules for flexible distributed control.
9. How does it ensure reliable output operation?
It includes module-level electronic protection and robust NPN output circuitry to prevent overcurrent or short-circuit damage.
10. What environmental conditions can it handle?
It operates reliably in industrial environments with temperatures from -20 °C to 55 °C and up to 95% relative humidity.
Related Models
| Model |
Description |
| 1734-OB2 |
24V DC sourcing output module, 2-channel |
| 1734-OB4 |
24V DC sourcing output module, 4-channel |
| 1734-OA2 |
AC digital output module, 2-channel |
| 1734-IA8 |
Digital input module, high channel count |
| 1734-IB2 |
Digital input module, 2-channel |
| 1734-AO8 |
Analog output module |
Popular Models
| Model |
Application Area |
| 1734-IB8 |
Digital input module |
| 1734-OB16 |
AC digital output module |
| 1734-AENTR |
Ethernet adapter module |
| 1734-AENT |
EtherNet/IP adapter module |
| 1734-IA16 |
Analog input module |
| 1734-AO8 |
Analog output module |
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