Allen-Bradley 1756-RM2K ControlLogix Redundancy Module
Allen-Bradley 1756-RM2K ControlLogix Redundancy module (2nd generation), coated, Redundancy module, second generation, conformal coated. NJT Automation sources the 1756-RM2K on request; send the part number for a replacement or repair quote.
Quote required. Request a quote below for pricing and delivery.
Actual NJT inventory photos
| Part Number | 1756-RM2K |
| Price | On Request Availability and condition determine final quote. |
| Description | ControlLogix Redundancy module (2nd generation), coated. |
| Shipping | UPS Ground included | Next-Day Air and Worldwide Shipping available at checkout |
| Warranty | 1-year full-function warranty provided by NJT Automation. Warranty details
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| Returns | 90-day free returns. View return policy |
| Exchange | Send us your defective 1756-RM2K after your purchase for a 10% core credit. We also purchase old or damaged parts outright. |
| Availability | Sourced on request We do not have a 1756-RM2K on the shelf right now. We can source one through our supplier network; request a quote and we confirm availability, price and lead time before you commit. | ||||||||
| Sourcing | Sourced through our Level 1 network of vetted US suppliers. Each unit is checked before it ships and carries the same NJT warranty and return policy as our own stock. Quotes within one hour during business hours; typical delivery 3–5 business days, next-day air available. Sourced parts are not available for local pickup. | ||||||||
| Repairs | 1756-RM2K Mail-In Repair Service | ||||||||
Part Number Decoder | ControlLogix Redundancy module (2nd generation), coated 1756RM2K
Decoded from the Rockwell Automation catalog-number structure. Series and firmware revision are printed on the product label, not encoded here. | ||||||||
Intended Use | Built for high-availability redundant process control applications. Redundancy modules synchronize a primary and secondary ControlLogix chassis so a controller fault switches over without stopping the process, typical of water treatment, pharmaceutical, power and oil and gas installations where downtime is not acceptable. Conformal coating suits corrosive or high-humidity atmospheres (ANSI/ISA 71.04 G3), such as pulp and paper, wastewater, chemical and coastal sites. | ||||||||
Physical Data | Weight and DimensionsWeight0.62 lb (0.28 kg)H × W × D5.7 × 1.4 × 5.7 in. (145 × 35 × 145 mm)
Product weight and dimensions are typical manufacturer-published values and may differ by series or option. Shipping box and weight are estimates for freight planning; the packed unit may ship in a different box. | ||||||||
Similar Part Numbers |
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Allen Bradley Information | Technical SpecificationsLifecycle status
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| Category | ControlLogix | ||||||||
| Part Number | 1756-RM2K | ||||||||
| Manufacturer | Allen-Bradley | ||||||||
Can the 1756-RM2K be repaired?
Yes. NJT Automation repairs the 1756-RM2K by mail-in: diagnostic evaluation, component-level repair and a functional test, backed by a 1-year full-function warranty.
NJT managed repair. No evaluation fee; no repair, no charge. Prepaid UPS label both ways, $650 minimum, rush available. 1-year full-function warranty included, 2- and 3-year options.
Compare quotes from independent repair technicians. Post your repair on RepairMode to receive competitive bids from experienced technicians. Each technician sets their own pricing and warranty.
Find a PLC repair specialiston RepairMode.com ↗Common failures
Failure patterns we regularly see on ControlLogix Redundancy module (2nd generation), coated hardware like the 1756-RM2K:
- Partner communication lost: fiber transceiver failure on the module or a broken 1756-RMCx fiber cable
- Redundancy pair will not synchronize (qualification fails) after a controller firmware change
- Primary / secondary switchover during a power dip because the module faulted
- OK LED red at power-up on one module of the pair
Photos by NJT Automation; test videos from NJT or network repair technicians.
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