Allen Bradley 1734-OE2C Analog Current Output POINT I/O Module

Product Overview

The Allen-Bradley 1734-OE2C is a compact analog output interface within the POINT I/O 1734 series, designed to provide two high-precision current output channels for distributed control applications. It converts controller-generated digital signals into stable analog current outputs used for regulating field devices such as control valves, actuators, and variable speed drives.

Its modular architecture supports flexible deployment in machine-level control systems and distributed automation environments where space efficiency and signal accuracy are critical.

Output Performance & Signal Characteristics

• Number of Channels: 2 single-ended analog current outputs

• Output Signal Ranges: 0–20 mA and 4–20 mA

• Conversion Method: Digital-to-Analog (DAC)

• Resolution: 15-bit effective resolution

• Accuracy: ±0.1% of full scale at 25°C

• Update Time: ~2.5 ms per channel

• Load Resistance Range: 0 to 750 Ω

• Output Ripple: <0.1% full scale

The module is optimized for stable loop control performance in real-time process applications.

Electrical & Power Characteristics

• Supply: 24V DC via POINTBus backplane

• POINTBus Current Consumption: 75 mA

• Power Dissipation: ~0.8 W typical

• Output Type: Non-isolated single-ended current channels

• Short-Circuit Protection: Supported

• Overrange Detection: Supported

• Underrange Detection: Supported

Isolation & Protection Design

• Channel-to-Bus Isolation: 50V continuous

• ESD Immunity: IEC 61000-4-2 compliant

• Protection Functions: Short-circuit and signal range monitoring

• Wiring Interface: Removable Terminal Block (1734-RTB / 1734-RTBS)

Environmental & Mechanical Specifications

• Operating Temperature: -20°C to +55°C

• Storage Temperature: -40°C to +85°C

• Humidity: 5–95% non-condensing

• Vibration: 5 g (10–500 Hz)

• Shock: 30 g operating / 50 g non-operating

• Mounting: DIN rail installation

• Form Factor: Open-style POINT I/O module

• Dimensions: 56 × 12 × 75 mm

• Weight: 0.99 lbs

System Integration

• Compatible Platforms: ControlLogix, CompactLogix, and Logix-based controllers

• Network Adapters: EtherNet/IP, ControlNet, DeviceNet POINT adapters

• Installation: Single-slot POINT I/O terminal base system

• Configuration: Standard Rockwell Studio/RSLogix environments

Typical Applications

• Control valve positioning systems

• Process loop analog output control

• Actuator and positioner regulation

• Variable frequency drive reference signals

• Distributed analog control in compact machinery

• Continuous process monitoring systems

FAQ

Q1: Does the module support both 0–20 mA and 4–20 mA outputs?
Yes, both standard industrial current ranges are configurable per channel.

Q2: Are the outputs isolated?
The channels are single-ended and non-isolated, with channel-to-bus isolation rated at 50V.

Q3: Can it be used in closed-loop control systems?
Yes, it is commonly used in PID loop applications for process control.

Q4: What terminal blocks are required?
The module requires either 1734-RTB or 1734-RTBS removable terminal bases.