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Allen-Bradley ControlLogix 1756 1756-DNB DeviceNet Bridge Scanner Module | Original New

Allen-Bradley ControlLogix 1756 1756-DNB DeviceNet Bridge Scanner Module | Original New

Allen-Bradley ControlLogix 1756 DeviceNet Bridge Scanner Module

Complete Model

1756-DNB

Official Product Description

Allen-Bradley 1756-DNB ControlLogix DeviceNet bridge and scanner module with one DeviceNet channel, as many as 64 nodes and selectable 125, 250 or 500 Kbps communication.

CORE FEATURE: One-channel DeviceNet bridge and scanner supporting as many as 64 network nodes.

LEAD TIME: In stock

WARRANTY: 1 year

Email Inquiry [email protected]

WhatsApp +86 18159889985

Appurtenance:

allen bradley controllogix 1756 1756 dnb devicenet bridge scanner module original new-1

Overview
Technical Data
Inquiry
Features
Interfaces
Installation
Environment
FAQ
Recommend Models
Recommended Products

Product Overview

1756-DNB is an Allen-Bradley ControlLogix 1756 DeviceNet bridge and scanner module for chassis-based industrial control systems.

Rockwell Automation specifies one DeviceNet channel, as many as 64 nodes and selectable communication rates of 125 Kbps, 250 Kbps or 500 Kbps with the corresponding maximum trunk lengths.

The module occupies one ControlLogix chassis slot, provides an open-style DeviceNet connector and uses a full-speed USB port for temporary local programming.

Technical Data

Complete model	1756-DNB
Brand	Allen-Bradley / Rockwell Automation
Product family	ControlLogix 1756
Product type	DeviceNet bridge and scanner communication module
Lifecycle status	Active
Communication network	DeviceNet
Number of channels	1
Communication rates	125 Kbps, 250 Kbps or 500 Kbps
Maximum trunk length	500 m at 125 Kbps; 250 m at 250 Kbps; 100 m at 500 Kbps
Network nodes	64 maximum
DeviceNet voltage range	11 to 25 VDC, Class 2 / SELV
DeviceNet current draw	60 mA at 24 VDC
Backplane current draw	400 mA at 5.1 VDC; 0 mA at 24 VDC
Power dissipation	3.5 W
Thermal dissipation	11.9 BTU/hr
DeviceNet port	One open-style 5- or 10-pin linear plug
USB port	USB full speed, 12 Mbps, for temporary local programming
Isolation voltage	50 V continuous, basic insulation, DeviceNet network to backplane; type tested at 853 VAC for 60 seconds
Dimensions	Numeric dimensions are not stated in official publication 1756-TD003R; one-slot ControlLogix chassis module
Weight	Not stated in official publication 1756-TD003R for this exact catalog number
Slot width	One ControlLogix chassis slot
Module location	Chassis-based, any slot
Compatible chassis	1756-A4, 1756-A7, 1756-A10, 1756-A13 and 1756-A17
Enclosure type	None, open-style equipment
Operating temperature	0 to 60 degrees C
Storage temperature	-40 to +85 degrees C
Relative humidity	5 to 95 percent, noncondensing
Vibration	2 g at 10 to 500 Hz
Shock	30 g operating; 50 g nonoperating
Certifications	cULus, CSA, CE, RCM, ATEX, IECEx, UKEX, UKCA, KC, EAC and CCC when marked
Official sources	Rockwell Automation 1756-DNB product page; publication 1756-TD003R-EN-E pages 15 to 17; publication 1756-IN566

Inquiry

CONTACT

STELLA

Email Inquiry [email protected]

WhatsApp +86 18159889985

Features

DeviceNet scanner operation

The module scans DeviceNet devices and exchanges I/O data between the DeviceNet network and the ControlLogix backplane.

Selectable network rate

The network can be configured for 125, 250 or 500 Kbps within the corresponding cable-length limits.

Node capacity

The published DeviceNet limit is 64 nodes on the network.

Temporary local access

A full-speed USB port supports temporary local programming and commissioning.

Interfaces

DeviceNet network	Use the open-style DeviceNet connector and an 11 to 25 VDC Class 2 / SELV network supply.
Network power	Allow for the published 60 mA DeviceNet current draw at 24 VDC.
USB connection	Use the USB port only for temporary local programming; it is not intended for permanent connection or hazardous-location use.
Backplane interface	Install the module in one slot of a compatible 1756 chassis and include 400 mA at 5.1 VDC in the backplane power budget.

Installation

01 - Verify the catalog number

Match 1756-DNB on the quotation, product label, packaging and Rockwell Automation product record.

02 - Confirm the chassis

Use a compatible 1756 chassis, reserve one slot and confirm the standard or redundant power supply arrangement.

03 - Set the node address and rate

Configure the DeviceNet node address and communication rate so they match the engineered network.

04 - Connect DeviceNet media

Use the specified DeviceNet connector, torque and cable-routing category, then connect the network power and signal conductors.

05 - Commission the scanner

Verify module status, node status, scan-list configuration and communication with every intended DeviceNet device.

Environment

Operating temperature

0 to 60 degrees C.

Storage temperature

-40 to +85 degrees C.

Relative humidity

5 to 95 percent, noncondensing.

Mechanical endurance

2 g vibration at 10 to 500 Hz, 30 g operating shock and 50 g nonoperating shock.

Protection

Open-style equipment; install it in a suitable industrial enclosure.

EMC performance

The official publication lists industrial emissions and immunity testing for ESD, RF, EFT/B, surge and conducted RF.

FAQ

Q1. How can the exact quoted 1756-DNB be verified?

Match the complete 1756-DNB catalog number on the quotation, module label and packaging. Confirm one DeviceNet channel, the open-style DeviceNet connector, 64-node limit and one-slot ControlLogix format.

Q2. How can New, Used or Refurbished condition be distinguished?

Request date-marked photos of the full label, series and serial markings, DeviceNet connector, USB port, status display, backplane connector and housing. Check for connector wear, damaged terminals, scratched contacts, altered labels and residue from previous chassis installation.

Q3. How should supplier legality and reliability be checked?

Verify the supplier legal entity, registered address, invoice details, payment beneficiary and traceable sales contact. The written offer must identify Allen-Bradley, 1756-DNB, condition, quantity, series and included connector.

Q4. Which specifications must engineering confirm before purchase?

Confirm DeviceNet scanner requirements, 64-node limit, 125/250/500 Kbps rate, network voltage, 60 mA network current, chassis slot, backplane power, scan-list capacity, firmware and series compatibility.

Q5. What physical evidence should be requested before payment?

Ask for one date-marked photo set showing the complete 1756-DNB label, serial and series markings, DeviceNet terminal, USB port, status indicators, backplane connector, housing condition, seals and packaging.

Q6. Can 1756-DNBK or another communication module replace 1756-DNB?

Not automatically. 1756-DNBK is the conformal-coated variant, while ControlNet, EtherNet/IP and DH+/RIO modules use different networks and interfaces. Confirm coating, DeviceNet protocol, firmware, chassis power and approvals before substitution.

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