Features:
- Interface Between DC Input Signals and PLC Control Systems
- Combines Capability of Signal Conditioning with Multi-Channel Input Support
- Operates in Conjunction with the 1791 Block I/O Series and Standard PLC Platforms
The Allen-Bradley 1791-16B0 operates as a 16-Channel DC Input Block I/O Module in industrial automation systems, providing reliable digital input processing for control applications. It continuously accepts incoming DC signals (10-30 VDC) across 16 organized input points arranged in two groups of eight, and converts these signals into logic-level data for transmission to the host controller. Seamless integration is standard with the 1791-16B0, with its grouped input configuration allowing flexible wiring schemes and efficient signal management in distributed I/O architectures. The 1791-16B0 has made improvements in several areas over previous input module designs in addition to incorporating wide-range input voltage capability within the 1791 series.
The 1791-16B0 provides essential input functions common to the entire Block I/O system, and is a critical component of the control path, directly affecting the proper, normal operation of the overall automation system. One 1791-16B0 module is required per input location depending on the desired channel count. The 1791-16B0 occupies a compact form factor in the control enclosure and is designed for direct field mounting in industrial environments.
For expanded input applications, the 1791 System allows multiple 1791-16B0 modules to be distributed across the communication network. In addition to standard single module operation, the distributed configuration also performs automatic status indication. The 1791-16B0 input monitoring executes state detection using the internal circuitry specified in the module specifications. Using this method, the input system continually monitors the status of all 16 channels. If the system detects that an input channel is active (within configured on-state current levels of 2.5-11 mA), it will automatically update the input image table and provide visual indication through the status LEDs.
The 1791-16B0 Allen-Bradley Block I/O DC Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1791-16B0 Block I/O DC Input Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1791-16B0 Block I/O DC Input Module Specs
General
- Manufacturer Allen-Bradley
- Model 1791-16B0
- Condition New Original ready stock
- Product Family 1791-16V0,1791-8B8P
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Device Compatibility: It monitors discrete signals from industrial field devices such as pushbuttons, selector switches, float switches, limit switches, and proximity sensors.
- Distributed Control: Ideal for applications with space limitations or those requiring highly distributed I/O blocks placed close to actuators and sensors.
- System Integration: Commonly used in legacy industrial automation networks and compatible with PLC-2, PLC-3, PLC-5, and SLC controllers.
- Status Monitoring: 16 front-panel status LEDs provide real-time visual feedback for each input channel, while dedicated Status and Communication LEDs indicate the module's overall health.
- Internal Protection: Features surge suppression circuitry to handle voltage transients and ensure safe operation within industrial environments.
- Physical Protection: Keyed removable terminal blocks prevent incorrect wiring insertion during installation or module replacement.
- Thermal Management: Designed with power dissipation (11.1 watts) and thermal limits (38 BTU/hr) that require a 2.0-inch air gap on all sides for proper cooling.
- Network Protocol: Primarily uses the Allen-Bradley Remote I/O link to communicate with a programmable controller or scanner.
- Addressing: It appears as a 1/4 I/O rack to the processor, utilizing 2 words of input and output image table memory.
- Daisy Chaining: Supports daisy-chaining on the Remote I/O link to connect multiple blocks to a single scanner.
- Wiring: Connectivity is achieved through a removable terminal strip with captive screws, facilitating fast installation and reduced downtime during maintenance.