The Allen-Bradley 1734-IJ is a high-performance incremental encoder module. It belongs to the compact POINT I/O family. This module delivers precise position feedback for critical automation tasks. Engineers rely on it for accurate speed and direction monitoring. It processes signals from incremental encoders with high fidelity.
High-Speed Signal Processing & Performance
The 1734-IJ module accepts input frequencies up to 1 megahertz. It also supports selectable rates of 500 or 250 kilohertz. This flexibility allows it to match various encoder output speeds. The module uses a single counter for data accumulation. It reads A, B, and Z return signals for comprehensive tracking. This design enables precise rotational or linear position measurement.
The module returns frequency data as a 24-bit binary number. This value is expressed within a 32-bit long word. The maximum count value reaches 16,777,215. Users can set a preset value and a roller value for each counter. This feature simplifies complex motion control applications. The module produces 6 or 10 bytes of input data. It consumes only 1 byte of I/O data from the scanner.
Robust Electrical Design & Isolation
This module operates on a nominal 5 Volts DC input. Its input current is 19.1 mA at 5 Volts DC. The input on-state voltage must be greater than 2.6 Volts DC. The on-state current requires at least 5 mA for proper activation. The module provides 50 Volts of continuous isolation voltage. This isolation protects the system from field-side electrical noise.
The 1734-IJ does not require an external DC power supply. It draws power directly from the POINTbus backplane. Its maximum POINTbus current draw is 160 mA. Power dissipation is a low 1.1 Watts at rated load. Thermal dissipation measures just 3.75 BTU per hour. These specifications ensure minimal heat generation within the cabinet.
Installation Guide & Mechanical Specifications
Mounting the 1734-IJ is a straightforward process. It snaps onto a standard DIN rail or mounts on a panel. The module requires a compatible wiring base for connections. Use base models 1734-TB, 1734-TBS, 1734-TB3, or 1734-TB3S. Wire the module using 22 to 14 AWG solid or stranded copper wire. The keyswitch position is set to position 2 for correct alignment.
The module has a compact footprint for space-saving layouts. Its dimensions are 2.21 x 0.47 x 2.97 inches. The unit weighs only 0.08 pounds, making it very lightweight. Five status indicators provide clear operational feedback. Two red/green LEDs show module and network status. Three yellow LEDs monitor the A, B, and Z inputs. The yellow LEDs flash when the input is toggling on and off. This unique feature aids in quick troubleshooting without a laptop.
Environmental Tolerances & Durability
The 1734-IJ operates reliably in harsh industrial environments. Its operating temperature range is -4 to 131 degrees Fahrenheit. The non-operating range extends from -40 to 185 degrees Fahrenheit. It withstands non-condensing relative humidity from 5 to 95 percent. The module handles operating shock up to 30 g. Non-operating shock tolerance is a robust 50 g. It also resists operating vibration of 5 g at 10 to 500 Hertz. These ratings ensure long-term reliability on moving machinery.
Logistics & Standard Packaging Details
- One Allen-Bradley 1734-IJ Incremental Encoder Module
- Standard anti-static packaging for safe transport
- Product documentation with installation guidelines
- Express delivery shipping is available via FedEx, UPS, and DHL
