Model Information
The 1756-RM is a redundancy module specifically designed for ControlLogix systems, enabling two controllers to operate in synchronization. Should the primary controller fail, the standby controller immediately takes over control, minimizing downtime. This module supports continuous operation in high-availability industrial environments such as process control, assembly lines, and machine automation. Its compact design fits standard ControlLogix enclosures, making it suitable for both new system installations and retrofits to existing systems.
Key Features & Advantages
Master-Slave Controller Real-Time Synchronization
Rapid Failover During System Failures
Diagnostic LED Indicators for Module and Communication Status
Single-Slot Design Compatible with ControlLogix Chassis
Products Description
| Parameter | Specification |
|---|---|
| Brand | Allen‑Bradley |
| Model | 1756‑RM |
| Module Type | Redundancy Controller Module |
| Compatible Chassis | 1756-A4 / A7 / A10 / A13 / A17 |
| Slot Width | 1 slot |
| Power Consumption | 9 W |
| Thermal Output | 31 BTU/hr |
| Input Current | 1.2 A @ 5.1 VDC, 120 mA @ 24 VDC |
| Operating Temp | 0–60 °C |
| Storage Temp | -40–85 °C |
| Weight | ~0.29 kg |
| Redundancy System | ControlLogix 5570 |
| Communication Rate, Max | 100 Mbps |
Typical Applications
Continuous manufacturing processes requiring zero downtime
Redundant PLC systems for critical industrial control
High-availability automation for chemical, oil & gas, or assembly plants
Systems requiring seamless backup controller failover
Frequently Asked Questions
Common Problem
What is the primary function of the 1756-RM?
This module keeps two controllers synchronized. If the primary controller fails, the backup controller immediately takes over, ensuring continuous system operation.
Can this module be installed in any slot?
Yes. It occupies only one slot and can be installed in any available position within a compatible ControlLogix chassis.
What additional components are required to achieve redundancy?
A dedicated redundancy cable is needed to connect the two controllers for real-time synchronization.
Is it compatible with standard ControlLogix power supplies?
Yes, this module works with both standard and redundant ControlLogix power supplies.
About Our Company
Company Introduction – PLC Export
Trusted Automation Supply
With decades of sourcing experience, we provide reliable access to both legacy and current automation modules, ensuring critical components are available when needed.
Efficient Industrial Solutions
Centralized procurement channels streamline the purchasing process, effectively reducing downtime and accelerating maintenance cycles by delivering precisely the parts customers need.
Inquiry & Contact
Sales Contact: Lydia
sales3@mooreplc.com
WhatsApp: +86 180 2071 4662
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