Overview
The Allen-Bradley 1734-ARM POINT I/O analog output module is designed for distributed industrial control applications requiring precise 4-20mA current output signaling. This four-channel module delivers analog current signals to proportional valves, variable frequency drives, actuators, and other modulating control devices in manufacturing, process control, and machine automation environments. Part of the POINT I/O family, the 1734-ARM integrates seamlessly with CompactLogix, ControlLogix, and other Rockwell Automation controllers via ControlNet, DeviceNet, or EtherNet/IP network adapters.
Key Features
- 4-Channel Current Output: Four independent single-ended, non-isolated analog current outputs configured for 4-20mA range with integral D/A converter
- 16-Bit Resolution: High-precision digital-to-analog conversion delivering 2.5 microamps per count across 0-21mA signal range
- Compact DIN Rail Form Factor: Modular design for in-cabinet and distributed mounting on standard DIN rail with other POINT I/O modules
- Removal/Insertion Under Power (RIUP): Supports hot-swapping for system maintenance without halting production
- Integrated Status Indicators: LED indicators for module status, network status, and individual channel activity for troubleshooting
- Studio 5000 Support: Full software support via Rockwell Automation’s Studio 5000 engineering environment
Technical Specifications
The 1734-ARM module operates from a nominal 24V DC supply (range 10-28.8V DC) and draws typical POINTBus current of 40-75 mA. Output accuracy is 0.1% full scale at 25°C (77°F), with conversion rates up to 1 millisecond. The module memory footprint is 4 bytes of configuration space and requires 1734-TB, 1734-TBS, 1734-TB3, or 1734-TB3S wiring base assemblies for installation. Operating temperature range is -4°F to 131°F (-20°C to 55°C) and storage temperature spans -40°F to 185°F (-40°C to 85°C). Dimensions are approximately 56 × 12 × 75.5 mm (2.21 × 0.47 × 2.97 inches) with a compact weight under 50 grams. The module supports standard signal wiring of 22–14 AWG solid or stranded copper at 75–100°C rating.
Typical Applications
- Proportional valve control in hydraulic and pneumatic systems
- Variable frequency drive (VFD) speed and torque command signals
- Damper and louver modulation in HVAC systems
- Analog signal re-transmission for data loggers and panel meters
- Distributed I/O for remote machine and process control cabinets
- Flow, pressure, and temperature process control loops requiring analog output
Compatibility & Replacements
The 1734-ARM Series C is compatible with DeviceNet, PROFIBUS, ControlNet, and EtherNet/IP communication adapters. It works with CompactLogix and ControlLogix processors running RSLogix 5000 or Studio 5000 software. Related 4-channel current output models include the 1734-OE4C (standard configuration). The module requires compatible wiring bases (1734-TB series) and operates within the POINT I/O distributed I/O architecture alongside digital, RTD, thermocouple, and specialty I/O modules on a single DIN rail. Ensure your communication adapter and PLC firmware support POINT I/O analog modules before installation.
