The 1734-IB8 from Allen-Bradley provides eight discrete sinking input channels for your control system. This compact module integrates seamlessly into a POINT I/O architecture. It accepts a nominal 24VDC signal voltage for reliable operation. Engineers use it to monitor limit switches and push buttons effectively. This module offers a space-saving design for dense automation panels.
Product Procurement & Buyer Guide
When specifying the 1734-IB8, you must consider its exact power requirements. The module draws only 75 mA from the POINTBus at 5VDC. Its total power dissipation is just 1.6 Watts or 5.5 BTU per hour. These low values make it ideal for energy-sensitive applications. You must also select the correct wiring base assembly for this unit. This module requires either the 1734-TB or the 1734-TBS terminal base. Your procurement team should always order these base units alongside the module.
The unit features eight sinking inputs with a nominal current of 4 mA at 24VDC. The ON-state voltage range spans from 10VDC to 28.8VDC. The input current ranges between 2 mA and 5 mA for stable signal detection. A fixed hardware filter of 0.5 ms provides initial noise rejection. Users can then configure an additional software filter from 0 to 63 ms. This flexibility helps you eliminate electrical noise from industrial environments. The module’s isolation voltage is 50 Volts continuous. Engineers have tested this isolation at 2500VDC for 60 seconds. This ensures robust protection between the field side and the system.
Step-by-Step Installation Guide
Install the 1734-IB8 in a clean and dry location without corrosive substances. Only a qualified expert should perform the installation procedure. First, mount the 1734-TB or 1734-TBS base onto a DIN rail. Ensure the base locks securely into its horizontal or vertical position. Align the module’s keyswitch to position 1 on the base. This keying mechanism prevents you from inserting the wrong module type.
Next, place the module onto the installed base until it clicks. Tighten the terminal base screws to a torque of 0.8 N-m or 7 lb-in. Connect your 24VDC sinking field devices to the appropriate terminals. The module has eight yellow LED indicators for each input channel. A single green/red LED shows the module status on the logic side. Use side-in writable labels to clearly mark each connection point. This practice simplifies future maintenance and troubleshooting tasks. The module’s open-style enclosure rating requires a protected cabinet. Keep the surrounding air temperature between -21 and 55 degrees Celsius. This ensures reliable operation and extends the product’s working life.
Logistics & Standard Packaging Details
