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allen bradley controllogix xt 1756 1756 rm2xt extended temperature redundancy module original new-0

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Allen-Bradley ControlLogix-XT 1756 1756-RM2XT Extended Temperature Redundancy Module | Original New

Allen-Bradley ControlLogix-XT 1756 Extended Temperature Redundancy Module
Complete Model
1756-RM2XT
Official Product Description
Allen-Bradley 1756-RM2XT ControlLogix-XT redundancy module with two 1000 Mbps fiber-optic channels and an extended -25 to +70 degree C operating range.
CORE FEATURE: Dual 1000 Mbps fiber redundancy channels with ControlLogix-XT extended-temperature operation.
LEAD TIME: In stock
WARRANTY: 1 year
Appurtenance:
  • Overview
  • Technical Data
  • Inquiry
  • Features
  • Interfaces
  • Installation
  • Environment
  • FAQ
  • Recommend Models
  • Recommended Products
Product Overview
1756-RM2XT is the Allen-Bradley ControlLogix-XT enhanced redundancy module for synchronized primary and secondary XT chassis.
Rockwell Automation specifies two fiber-optic channels, 1000 Mbps operation and compatible singlemode 1756-RMC1, 1756-RMC3 and 1756-RMC10 redundancy cables.
Unlike 1756-RM2, this catalog number is designed for the ControlLogix-XT chassis and operates from -25 to +70 degrees C when the complete system meets the XT ratings.

Technical Data

Complete model
1756-RM2XT
Brand
Allen-Bradley / Rockwell Automation
Product family
ControlLogix-XT 1756
Product type
Extended-temperature 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; ControlLogix-XT single-slot module
Weight
Approximately 0.29 kg (0.64 lb)
Slot width
One ControlLogix-XT chassis slot
Module location
Chassis-based, any slot
Compatible chassis
1756-A7XT and 1756-A10XT
Supported controller families
ControlLogix 5570 and ControlLogix 5580
Standard power supplies
1756-PAXT and 1756-PBXT
Redundant power supply
None listed for the XT configuration
Enclosure type
None, open-style equipment
Temperature code
T4
Operating temperature
-25 to +70 degrees C
Storage temperature
-40 to +85 degrees C
Relative humidity
5 to 95 percent, noncondensing
Certifications
CE, RCM, cULus, ATEX, IECEx, UKEx, UKCA, KC and CCC when marked
Official sources
Rockwell Automation 1756-RM2XT product page; publication 1756-TD001W-EN-P pages 87 to 89; publication 1756-IN087C-EN-P pages 5 to 9

Inquiry

Features

ControlLogix-XT design
The module is specified for compatible ControlLogix-XT chassis, power supplies and controller combinations.
Extended temperature range
The official operating range is -25 to +70 degrees C for a correctly rated XT system.
Dual fiber channels
Two 1000 Mbps redundancy channels allow an optional second fiber path for higher availability.
Matched-chassis synchronization
The module synchronizes matched primary and secondary chassis in a validated redundancy configuration.

Interfaces

Channel 1
Connect a compatible singlemode 1756-RMC fiber-optic cable between the matched 1756-RM2XT modules.
Channel 2
Install an optional second compatible fiber-optic cable for 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 compatible XT chassis and include 1.16 A at 5.1 VDC in the power budget.

Installation

01 - Verify the exact XT catalog number
Match 1756-RM2XT on both module labels, quotations, packaging and Rockwell Automation product records.
02 - Use an XT chassis pair
Install the modules only in compatible 1756-A7XT or 1756-A10XT chassis with the specified XT power supplies.
03 - Match both chassis
Primary and secondary chassis components, slot positions, controller families and compatible firmware must match.
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, temperature ratings and qualified redundancy status before service.

Environment

Operating temperature
-25 to +70 degrees C for the correctly rated ControlLogix-XT system.
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 derating
If any chassis component has a lower environmental rating, the complete system is limited to the lowest rating.

FAQ

Q1. How can the exact quoted 1756-RM2XT be verified?
Match 1756-RM2XT on the quotation, both module labels and packaging. Confirm the XT suffix, two fiber channels, XT chassis requirement, -25 to +70 degree C range 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 state Allen-Bradley 1756-RM2XT, condition, series, quantity and included fiber cables.
Q4. Which specifications must engineering confirm before purchase?
Confirm XT chassis and power supplies, both chassis configurations, controller family, firmware bundle, RMCT version, 1000 Mbps fiber channels, cable length, backplane power and environmental ratings.
Q5. What physical evidence should be requested before payment?
Ask for one date-marked photo set showing both 1756-RM2XT labels, XT suffixes, serial and series markings, both channel ports, status indicators, backplane connectors, packaging and included 1756-RMC cables.
Q6. Can standard 1756-RM2 replace 1756-RM2XT?
Not automatically. 1756-RM2 is specified for standard ControlLogix chassis and a 0 to 60 degree C range, while 1756-RM2XT requires XT chassis and power components and supports -25 to +70 degrees C. Validate the complete system before substitution.

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