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Allen Bradley CompactBlock I/O 1791D 1791D-16B0X

1791D-16B0X

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The 1791D-16B0X is a 16-Point expansion module from the CompactBlock I/O series of Allen-Bradley. This module has Sixteen (16) 24 VDC discrete inputs that support sinking configuration in Two (2) groups of Eight (8) inputs each. This module supports DeviceNet communication and integrated power supply. This module is compatible with PLC, SLC, or SoftLogix programmable controllers using DeviceNet scanners.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with DO Supply's 2-year warranty.
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Technical specifications for 1791D-16B0X

ManufacturerRockwell Automation
BrandAllen-Bradley
Part Number/Catalog No.1791D-16B0X
Manufacturer Rockwell Automation
Inputs per Block16
Brand Allen-Bradley
Input TypeSinking
Series CompactBlock I/O
Input Off-state Voltage5V DC max.
Part Number1791D-16B0X
Input On-state Voltage10V DC min.
Product Description Discrete Input Module
Input Off-state Current1.5mA at 5V DC max.
No. of I/O channelsSixteen (16)
Input On-state Current11mA at 30V DC max.
No. of channel groupsTwo (2)
Outputs per Block0
No. of channels per groupNo. of channels per group
Output TypeN/A
Input signal, nominal 24 VDC
Output On-state Voltage RangeN/A
Input signal, range 10-30 VDC
Output On-state CurrentN/A
On state current11.0mA @ 30V, max; 2.0mA @ 10V, min.
DeviceNet PowerN/A
Off-state current1.5mA
EnclosureIEC IP20
LED indicators Mod/Net status - red/green; Logic status - green; I/O status - yellow
Communication rateThick Cable: 125Kbps @ 500m (1600ft) 250Kbps @ 200m (600ft) 500Kbps @ 100m (330ft) Flat Media: 125Kbps @ 420m (1230ft) 250Kbps @ 200m (490ft) 500Kbps @ 75m (245ft)
I/O exchangePoll, Cyclic, Change of State (CoS)
Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

The 1791D-16B0X is an Allen-Bradley manufactured discrete input device. This is part of the CompactBlock I/O series which features Sixteen (16) input channels that support sink wiring configuration. This module is typically used as part of a distributed I/O station and compatible with functioning as I/O devices of Allen-Bradley’s PLC2-2, PLC-3, and PLC-5 series, SLC 500, or SoftLogix programmable controllers using DeviceNet scanners. The 1791D-16B0X input channels accept an input signal voltage range of 0-30 VDC with a minimum On-state voltage of 10 VDC and maximum On-state voltage of 30 VDC at 40 Degree Celsius and 24 VDC at 60 Degree Celsius. Similarly, the minimum On-state current is 2 mA at 10 VDC while the maximum On-state current is 11 mA at 30 VDC. This module comes with built-in LED status indicators such as Mod/Net Led which is a bi-color LED; Logic Status and I/O status LED. The 1791D-16B0X comes with an integrated DeviceNet communication terminal. When using Thick physical media, supported communication rates are 125Kbps @ 500m (1600ft), 250Kbps @ 200m (600ft) and 500Kbps @ 100m (330ft). When utilizing Flat cable for DeviceNet communication, supported transmission rates are 125Kbps @ 420m (1230ft), 250Kbps @ 200m (490ft) and 500Kbps @ 75m (245ft). This module is configurable to implement Polled, Change of State (CoS) and Cyclic I/O exchanged. When connecting input signals to the 1791D-16B0X, the appropriate conductor size is 14 gauge (2mm2) stranded wire with 3/64 inch, maximum insulation thickness. It supports DIN rail mounting and comes with an IP20 enclosure rating.

The Allen-Bradley 1791D-16B0X is a 16-sinking input expansion module that belongs to the CompactBlock I/O product series. It has an 11 mA at 30 Volts DC input on-state current and 1.5 mA at 5 Volts DC input off-state current. This module also has 16 inputs per block and holds an IEC IP20 enclosure type. It produces 3 bytes for every 16 inputs and consumes 2 bytes for every 16 outputs. The expansion power needed for this module is 5 Volts DC (voltage) and 100 mA (current). Its operating temperature ranges from 0 to 60 degrees Celsius. The CompactBlock I/O expansion modules, including the 1791D-16B0X block, can be added to any CompactBlock I/O base module to expand the I/O assembly up to 32 points. This module is mostly used for in-cabinet applications. It has 14 AWG Stranded connection cables and an isolation rating of 500 Volts AC I/O to DeviceNet. Each of the 1791D CompactBlock I/O modules carries the autobaud feature which allows it to detect the baud network rate upon connection to the live network. The 1791D-16B0X module can be mounted to a DIN rail or on a panel. This expansion module must be grounded first before installing. Yet, expansion blocks should NEVER be installed or uninstalled when power is put into the base. This may cause a destructive explosion in location installations. In addition, the 1791D-16B0X must be installed in an appropriate enclosure with a genuine wiring method that complies with electrical codes and regulations. The expansion dimensions for the 1791D-16B0X expansion module are 4.4 X 1.9 X 1.5 inches, and it weighs around 0.1 kilograms (0.3 pounds). Finally, this module has 5 to 95% relative humidity without condensing. This product is also CE marked, meaning that it has been certified for all relevant directives.

Revision Part #Also known as
1791D-16B0X Ser A1791D-16B0X/A, Series A, Rev A
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1791D-16B0X Ser B1791D-16B0X/B, Series B, Rev B
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1791D-16B0X Ser C1791D-16B0X/C, Series C, Rev C
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1791D-16B0X Ser D1791D-16B0X/D, Series D, Rev D
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