WhatsApp:+86 18150087953 WeChat: +86 18150087953 
Email：
Description
Technical Specifications
Product Model | 1734-OE4CManufacturer | Allen-Bradley / Rockwell AutomationProduct Type | POINT I/O 4-Channel Analog Current Output ModuleNumber of Outputs | 4 (Single-Ended, Non-Isolated)Output Signal Range | Software-selectable: 4–20 mA or 0–20 mAResolution | 16 bits (65,536 counts full scale)Accuracy | ±0.1 % Full Scale typical @ 25 °C (calibrated); ±0.3 % over operating tempUpdate Time | 1 ms per point (typical conversion/update rate)Maximum Load Impedance | 750 Ω @ 24 V external loop supplyLoop Supply Requirement | External 24 V DC (10.2–28.8 V DC), user-providedBackplane Current Draw | 75 mA max @ 5 V DC (from POINTBus backplane)Communication Interface | POINTBus+ via mounted Terminal Base (with POINT I/O Adapter)Indicators | 1 Module Status (Solid/Flashing Green/Red), 4 per-channel Output Status LEDsOpen Wire Detection | Yes (reports fault on loss of loop continuity)Mounting | 35 mm DIN Rail (EN 60715) via Terminal Base: 1734-TB / 1734-TB2 / 1734-TBS / 1734-TB2SOperating Temp | -20 °C to +55 °C (-4 °F to +131 °F)Dimensions (H×W×D) | 56 × 17.5 × 75 mm (2.21 × 0.69 × 2.95 in)Certifications | cULus Listed, CE, C-Tick, Ex Zone 2 / Class I Div 2 (with appropriate adapter/base)
Main Features and Advantages
High-resolution process control: The 1734-OE4C provides true 16-bit digital-to-analog conversion on each of its four current output channels, enabling fine-grained control of modulating final elements such as control valves, damper actuators, and analog speed references. With selectable 4–20 mA or 0–20 mA ranges and programmable ramp rates, the module helps eliminate abrupt step changes that could upset sensitive process loops.Integrated diagnostics and open-wire detection: Unlike many basic analog output modules, the 1734-OE4C continuously monitors each current loop for open-wire conditions and reports faults both via the per-channel LED and back to the controller through POINTBus status bits. This allows preventive maintenance teams to detect broken field wiring or failed loop supplies before a process deviation occurs, rather than discovering it during a manual walkthrough.Flexible fail-safe and hold-last-state behavior: Through Studio 5000 configuration, users can define whether each output holds its last commanded value or drives a preset safe default (e.g., 4 mA or 0 mA) upon loss of communication with the adapter or controller. This granularity is critical in safety-related or batch-process applications where uncontrolled actuator movement during a network fault could damage product or equipment.Compact modular scalability: The 1734-OE4C occupies a single POINT I/O slot and can be mixed freely with digital, thermocouple, RTD, and other analog modules on the same adapter—supporting mixed-signal remote I/O drops with minimal panel space. Its compatibility with removable terminal bases (1734-TB series) means the module itself can be swapped without disconnecting a single field wire, dramatically reducing mean time to repair (MTTR) during troubleshooting.Seamless Logix integration: When added to a ControlLogix® or CompactLogix™ project, the 1734-OE4C is discovered automatically by the adapter’s AOP. Tag-based I/O mapping assigns intuitive names (e.g., Local:1:O.Data[0]) for each channel, and module-defined fault bits are accessible directly in ladder or structured text logic for alarm handling and SCADA integration.
Application Field
The Allen-Bradley 1734-OE4C is widely deployed in process industries—including chemical blending, water/wastewater treatment, food & beverage processing, and pharmaceutical manufacturing—where precise analog control loops regulate flow, pressure, level, and temperature via 4–20 mA current-driven final control elements. In a typical water treatment plant, multiple 1734-OE4C modules mounted in a remote POINT I/O rack (connected via an EtherNet/IP adapter such as the 1734-AENTR) drive chemical dosing pump VFD speed references, chlorine gas valve positioners, and recirculation loop control dampers—all from a single distributed drop located in the field, eliminating long analog homerun cables back to the main control room.In discrete manufacturing, the 1734-OE4C finds application on packaging lines and material handling systems where it provides analog speed commands to DC drives, servo amplifiers, or tension controllers on wind/unwind stations. OEM machine builders value the module’s small footprint and the ability to combine it with POINT I/O digital modules in a mixed-signal assembly that mounts directly inside a compact machine-mounted enclosure or, with appropriate protection, in a NEMA-rated local junction box adjacent to the process area. The external 24 V DC loop supply requirement also allows isolation of the analog loop power from the I/O backplane supply, an important consideration in electrically noisy environments with significant ground potential differences between the control panel and the field instruments.
