Allen-Bradley 1756-RM ControlLogix Redundancy Module
$123.00
$320.00
Description
Allen-Bradley 1756-RM ControlLogix Redundancy Module
Configured for controller synchronization and failover execution in ControlLogix redundant chassis systems, the Allen-Bradley 1756-RM (1756-RM Redundancy Module) provides direct physical and data communication control between paired controllers through a fiber optic redundancy link.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-RM |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.64 lbs |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 9 W |
| Module Type | ControlLogix Redundancy Module |
| Controller Redundancy | Supports two identical controllers in redundant chassis configurations |
| Communication Speed | 100 Mbps with same-series redundancy modules |
| Communication Interface | Single-mode LC fiber optic connector |
| Redundancy Cable Compatibility | 1756-RMC1 (1 m), 1756-RMC3 (3 m), 1756-RMC10 (10 m) |
| Current Draw | 4 mA at 1.2 VDC, 1.2 A at 5.1 VDC, 120 mA at 24 VDC |
| Thermal Dissipation | 31 BTU/hr |
| Storage Temperature | -40 deg C to 85 deg C |
| Relative Humidity | 5% to 95%, non-condensing |
| Shock Resistance | 30 g operating, 50 g non-operating |
| Vibration Resistance | 2 g at 10-500 Hz |
| Compatible Chassis | 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 |
| Compatible Power Supplies | 1756-PA72, 1756-PA75, 1756-PB72, 1756-PB75, 1756-PA75R, 1756-PB75R, PSCA2 |
EtherNet/IP and ControlLogix Redundancy Architecture
The 1756-RM module operates as a dedicated redundancy communication component within the ControlLogix platform. It maintains synchronization between paired controller chassis assemblies through a single-mode LC fiber optic connection. The module transfers redundancy status information and controller synchronization data to support automatic switchover operations between primary and secondary controller assemblies.
The module uses ControlLogix backplane communication for chassis-level data exchange and supports system configurations requiring matched controller hardware, firmware compatibility, and identical chassis arrangements. Redundancy performance depends on synchronized controller firmware, compatible communication modules, and correct chassis installation.
Frequently Asked Questions
Q: What communication interface is used by the 1756-RM module?
A: The 1756-RM uses a single-mode LC fiber optic interface for redundancy communication between paired ControlLogix chassis.
Q: What power requirements apply to the 1756-RM module?
A: The module requires chassis backplane power with current draw values of 4 mA at 1.2 VDC, 1.2 A at 5.1 VDC, and 120 mA at 24 VDC. Maximum power dissipation is 9 W.
Q: Which chassis platforms support the 1756-RM module?
A: The module is compatible with ControlLogix chassis models 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17.
Field Installation Guidelines
Install the 1756-RM module in a compatible ControlLogix chassis slot according to the chassis installation manual. Verify that both redundant chassis assemblies contain matching controller configurations and compatible firmware revisions before enabling redundancy operation.
Use approved fiber optic redundancy cables and maintain proper fiber routing practices to prevent excessive bending or mechanical stress. Keep fiber communication paths separated from high-voltage power wiring and sources of electromagnetic interference.
Confirm backplane power availability before module insertion. Follow standard industrial grounding practices for chassis installation, including proper enclosure grounding and cable shielding methods where applicable.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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