The Allen-Bradley 1734-IB8 is a high-density digital input module designed for the POINT I/O system. Specifically, this module provides eight discrete sinking input channels in a single group. Each channel accepts a nominal signal voltage of 24 Volts DC, with an acceptable range from 10 to 28.8V DC. The nominal input current is 4mA at 24V DC, while the maximum input current reaches 5 milliamps. Therefore, the 1734-IB8 is well-suited for monitoring a wide variety of field devices, including proximity sensors, limit switches, and push buttons.
This input module offers flexible noise immunity through its user-selectable input filter time. The hardware provides a fixed filter of 0.5 ms, while the software allows an additional user-configurable filter ranging from 0 to 63 ms. Consequently, engineers can tailor the response time to match specific application requirements, effectively reducing false triggers from electrical noise. Furthermore, the 1734-IB8 includes eight yellow status indicators on the logic side, one for each input channel, plus a single green/red module status indicator. These LEDs provide immediate visual feedback on both signal activity and module health.
The Allen-Bradley 1734-IB8 draws a POINTBus current of 75 mA at 5 Volts DC. Its power dissipation is rated at 1.6 Watts, with a corresponding thermal dissipation of 5.5 BTU/hour. The isolation voltage between the field side and the system is 50 Volts DC continuous, and it has been tested at 2500 Volts DC for 60 seconds with reinforced insulation. This robust isolation ensures reliable operation in industrial environments. Additionally, this module requires a keyswitch alignment of position 1 when installing onto the terminal base.
The 1734-IB8 features a compact and space-saving design, with dimensions of 56 x 12 x 75.5 mm (2.2 x 0.47 x 2.97 inches). It weighs approximately 31.8 grams (1.12 ounces), making it one of the lightest modules in its class. Regarding environmental resilience, it operates reliably across a wide temperature range, from -20°C to 55°C (-4°F to 131°F). Its open-style enclosure allows for flexible mounting options, as you can install it either horizontally or vertically. For optimal performance and longevity, always install the module in a clean, dry location away from corrosive substances.
The 1734-IB8 is designed to work with any POINT I/O communication adapter, enabling distributed I/O architectures across multiple networks. For instance, it is fully compatible with EtherNet/IP, ControlNet, and DeviceNet adapters. Moreover, Series C versions of the 1734-IB8 also support ProfiBus communication adapters. This module requires a terminal base assembly, such as the 1734-TB or 1734-TBS, for proper wiring and mounting. The base provides the physical connection point for field wiring and ensures secure DIN rail installation.
First, mount the appropriate terminal base (1734-TB or 1734-TBS) onto the DIN rail. Next, align the keyswitch to position 1 before inserting the 1734-IB8 module into the base. The locking mechanism will secure the module in place once fully seated. After that, connect field wiring to the removable terminal block, ensuring correct polarity for the sinking inputs. Finally, apply power and verify that the status indicators illuminate correctly. The terminal base screw torque should be set to 0.8 N-m or 7 pounds per inch to ensure reliable electrical connections.
One 1734-IB8 digital input module
One removable terminal block (RTB)
One mounting base
Installation instructions manual
All orders are shipped via FedEx, UPS, or DHL to ensure fast and secure delivery worldwide. Your module will be carefully packaged to prevent damage during transit.
1. What is the difference between the 1734-IB4D and the 1734-IB8?
The 1734-IB8 offers eight sinking input channels, while the 1734-IB4D provides only four. Additionally, the 1734-IB8 features user-selectable input filters for enhanced noise immunity, whereas the IB4D focuses on diagnostic capabilities.
2. Can the 1734-IB8 be used with EtherNet/IP networks?
Yes, the 1734-IB8 is fully compatible with EtherNet/IP communication adapters. It also works with ControlNet, DeviceNet, and ProfiBus (Series C) adapters for flexible network integration.
3. What terminal base is required for the 1734-IB8?
This module requires either the 1734-TB or 1734-TBS wiring base assembly. The base provides the mounting and wiring interface for the module.
4. How do the input filters on the 1734-IB8 work?
The module has a fixed hardware filter of 0.5 ms. Additionally, you can configure a software filter from 0 to 63 ms, allowing you to balance response speed against noise rejection for your specific application.
5. What is the operating temperature range for the 1734-IB8?
The 1734-IB8 operates reliably in ambient temperatures from -20°C to 55°C (-4°F to 131°F), making it suitable for most industrial environments.
| Brand Name | |
| Model No. | 1734-IB8 |
| Product Type | Input Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
