Product Summary
The Allen-Bradley 1734-IB8 delivers eight discrete sinking input channels for your POINT I/O system. This module accepts a nominal 24VDC signal and requires a 1734-TB or 1734-TBS wiring base for operation. Its compact design enables efficient distributed I/O architecture in your control panel.
Step-by-Step Installation Guide for the 1734-IB8
Proper installation ensures your 1734-IB8 module operates reliably for years. Follow these expert guidelines to protect the equipment and your system.
Environmental Preparation for Mounting
Select a clean and dry location for the 1734-IB8. Avoid any substances that might cause corrosion on the drive components. This open-style module requires a controlled environment without contaminants. You can mount the unit horizontally or vertically on a DIN rail. Always install a mounting base before attaching the module.
Expert Installation Requirements
Installation requires an expert who understands all system components. This protects the life of the drive and its connected equipment. Align the module keyswitch to position one on the terminal base. Use the 1734-TB or 1734-TBS wiring base assembly for this module. Apply a screw torque of exactly 0.8 N-m (7 lb-in) to the terminal base screws.
Wiring and Electrical Connections
The 1734-IB8 supports sink wiring configuration for its eight input channels. It operates at a nominal voltage of 24VDC with an ON-state range of 10-28.8VDC. The input current ranges from 2mA to 5mA, with a nominal value of 4mA at 24VDC. Connect field devices to the removable terminal blocks for easy maintenance.
Maintenance Protocols and Longevity for the 1734-IB8
Regular maintenance extends the operational life of your POINT I/O module. Monitor the status indicators to ensure proper function and prevent downtime.
Temperature and Environmental Limits
The 1734-IB8 operates within a surrounding air temperature range of -21 to 55 degrees Celsius. Keep the module within this thermal envelope for reliable performance. The module dissipates 1.6 Watts of power, which equals 5.5 BTU per hour. Do not exceed the maximum temperature of 55 degrees Celsius around the unit.
Electrical Isolation and Protection
This module provides reinforced insulation with an isolation voltage of 50V continuous. It has been tested at 2500V DC for 60 seconds from field-side to system. The 1734-IB8 draws 75 mA from the POINTBus at 5V DC. This low current draw reduces the overall power budget for your system.
Status LED Monitoring for Diagnostics
The 1734-IB8 includes eight yellow input status LEDs, one for each channel. It also has one green/red module status indicator on the logic side. These LEDs provide immediate visual feedback on operational status. A network status indicator also helps with troubleshooting communication issues.
Input Filter Configuration
The hardware input filter provides a fixed 0.5 ms delay per channel. You can configure an additional user-selectable filter from 0 to 63 ms. This flexibility allows you to debounce noisy signals effectively. Adjust the filter time to match your specific sensor or switch characteristics.
