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Allen-Bradley ControlLogix 1756 1756-RM2 Redundancy Enhanced Module | Original New

Allen-Bradley ControlLogix 1756 1756-RM2 Redundancy Enhanced Module | Original New

Allen-Bradley ControlLogix 1756 Redundancy Enhanced Module

Complete Model

1756-RM2

Official Product Description

Allen-Bradley 1756-RM2 ControlLogix enhanced redundancy module with two fiber-optic channels, 1000 Mbps operation and support for ControlLogix 5570 and 5580 redundancy systems.

CORE FEATURE: Dual 1000 Mbps fiber-optic redundancy channels for synchronized ControlLogix chassis pairs.

LEAD TIME: In stock

WARRANTY: 1 year

Email Inquiry [email protected]

WhatsApp +86 18159889985

Appurtenance:

allen bradley controllogix 1756 1756 rm2 redundancy enhanced module original new-1

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

Product Overview

1756-RM2 is an Allen-Bradley ControlLogix enhanced redundancy module for synchronized primary and secondary ControlLogix chassis.

Rockwell Automation specifies two fiber-optic channels, 1000 Mbps operation and compatible singlemode 1756-RMC1, 1756-RMC3 and 1756-RMC10 redundancy cables.

The module occupies one slot in a standard ControlLogix chassis and supports ControlLogix 5570 and ControlLogix 5580 controller families within validated redundancy system combinations.

Technical Data

Complete model	1756-RM2
Brand	Allen-Bradley / Rockwell Automation
Product family	ControlLogix 1756
Product type	Enhanced redundancy module
Lifecycle status	Active Mature
Redundancy channels	2 fiber-optic channels
Signal type	Fiber optic input and output
Channel rate	1000 Mbps
Connector cables	1756-RMC1, 1 m; 1756-RMC3, 3 m; 1756-RMC10, 10 m
Current draw at 5.1 VDC	1.16 A
Current draw at 24 VDC	3.4 mA
Power dissipation	6 W maximum
Thermal dissipation	21 BTU/hr
Dimensions	Numeric dimensions are not stated in official publication 1756-TD001W; standard ControlLogix single-slot module
Weight	Approximately 0.29 kg (0.64 lb)
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
Supported controller families	ControlLogix 5570 and ControlLogix 5580
Standard power supplies	1756-PA72, 1756-PA75, 1756-PB72 and 1756-PB75
Redundant power supplies	1756-PA75R, 1756-PB75R and 1756-PSCA2
Enclosure type	None, open-style equipment
Temperature code	T4
Operating temperature	0 to 60 degrees C
Storage temperature	-40 to +85 degrees C
Relative humidity	5 to 95 percent, noncondensing
Certifications	CE, RCM, cULus, ATEX, IECEx, UKEx, UKCA, FM, KC and CCC when marked
Official sources	Rockwell Automation 1756-RM2 product page; publication 1756-TD001W-EN-P pages 87 to 89; publication 1756-IN087C-EN-P pages 5 to 9

Inquiry

CONTACT

STELLA

Email Inquiry [email protected]

WhatsApp +86 18159889985

Features

Enhanced redundancy

The module synchronizes matched primary and secondary ControlLogix chassis for high-availability control.

Dual fiber channels

Two redundancy channels allow a second fiber link to be installed for fiber-path redundancy.

Gigabit link rate

Rockwell Automation specifies 1000 Mbps for the redundancy channels.

Controller-family support

The official technical data lists ControlLogix 5570 and ControlLogix 5580 controller families.

Interfaces

Channel 1	Connect a compatible singlemode 1756-RMC fiber-optic cable between the matched redundancy modules.
Channel 2	Install an optional second compatible fiber-optic cable to provide redundant fiber media.
Supported cables	Use 1756-RMC1, 1756-RMC3 or 1756-RMC10 according to the required chassis separation.
Backplane interface	Install the module in one slot of a standard ControlLogix chassis and include 1.16 A at 5.1 VDC in the power budget.

Installation

01 - Verify the exact catalog number

Match 1756-RM2 on both modules, quotations, labels, packaging and Rockwell Automation product records.

02 - Match both chassis

The primary and secondary chassis must use matching components, slot positions, controller families and compatible firmware.

03 - Install the module pair

Insert one 1756-RM2 in each standard ControlLogix chassis in the same slot position.

04 - Connect fiber channels

Connect an approved 1756-RMC cable to channel 1 and, when required, a second approved cable to channel 2.

05 - Qualify the redundancy system

Verify firmware, RMCT compatibility, chassis synchronization and qualified redundancy status before service.

Environment

Operating temperature

0 to 60 degrees C.

Storage temperature

-40 to +85 degrees C.

Relative humidity

5 to 95 percent, noncondensing.

Protection

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

Laser safety

The fiber-optic system is a Class 1 laser product; installation and service must follow the official safety instructions.

System matching

The components in the primary and secondary chassis must match for the redundancy system to synchronize.

FAQ

Q1. How can the exact quoted 1756-RM2 be verified?

Match 1756-RM2 on the quotation, both module labels and packaging. Confirm two fiber channels, the standard ControlLogix chassis version, 0 to 60 degree C rating and one-slot format.

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

Request date-marked photos of the full label, serial and series markings, both fiber channels, SFP areas, indicators, backplane connector and housing. Check for fiber-port contamination, latch wear, altered labels and previous chassis marks.

Q3. How should supplier legality and reliability be checked?

Verify the supplier legal entity, registered address, invoice details, payment beneficiary and traceable contact. The offer must identify Allen-Bradley 1756-RM2, condition, series, quantity and included 1756-RMC cables.

Q4. Which specifications must engineering confirm before purchase?

Confirm both chassis configurations, controller family, firmware bundle, RMCT version, slot positions, 1000 Mbps fiber channels, 1756-RMC cable length, backplane power and system certifications.

Q5. What physical evidence should be requested before payment?

Ask for one date-marked photo set showing both 1756-RM2 labels, serial and series markings, channel 1 and channel 2 ports, status indicators, backplane connectors, seals, packaging and included fiber cables.

Q6. Can 1756-RM2XT or 1756-RM3 replace 1756-RM2?

Not automatically. 1756-RM2XT requires an XT chassis and power supply and has an extended temperature range, while 1756-RM3 migration requires validated firmware and system architecture. Confirm the complete redundancy system before substitution.

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