Allen-Bradley 1756-SRM ControlLogix System Redundancy Module
$123.00
$320.00
Description
Allen-Bradley 1756-SRM ControlLogix System Redundancy Module
The Allen-Bradley 1756-SRM, also cataloged as the 1756-SRM System Redundancy Module, operates as a dedicated hardware component for controller synchronization and failover execution within ControlLogix redundancy networks. The module provides fiber-based communication between paired controllers for standby coordination and status exchange.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-SRM |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 0.45 kg |
| Dimensions | 14.5 x 7 x 14 cm |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 800 mA @ 5 VDC, 5 mA @ 24 VDC |
| Module Type | System Redundancy Module |
| Product Line | ControlLogix |
| Compatible Controllers | ControlLogix 5570, ControlLogix 5580, Logix 5560 |
| Redundancy Architecture | Hot-standby configuration |
| Communication Interface | ControlNet or EtherNet/IP synchronization |
| Connector Type | SC fiber-optic |
| Fiber Type | 62.5/125 um multi-mode fiber |
| Supported Cables | 1757-SRC1, SRC3, SRC10, SRC50, SRC100 |
| Optical Wavelength | 1300 nm |
| Fiber Channels | 1 transmit/receive fiber |
| Backplane Current | 0.160 A @ 24 VDC |
| Power Dissipation | Maximum 11.28 W |
| Thermal Dissipation | Maximum 38.49 BTU/hr |
| Enclosure Rating | Open-style, no enclosure |
EtherNet/IP and ControlLogix Redundancy Synchronization
The 1756-SRM provides synchronization communication between redundant ControlLogix controllers through dedicated redundancy links. The module supports deterministic controller state exchange, including program execution synchronization, I/O data coordination, and controller status monitoring.
The module operates within ControlLogix chassis architectures using the 1756 backplane interface. EtherNet/IP and ControlNet network configurations can be integrated according to the controller redundancy system design.
The redundancy architecture uses paired controller operation with hot-standby behavior. Firmware flash compatibility between the redundancy module, controller firmware, and associated ControlLogix components must be verified during system configuration.
Frequently Asked Questions (FAQ)
Q: What communication interface is used by the 1756-SRM for controller synchronization?
A: The module uses a dedicated SC fiber-optic connection with 62.5/125 um multi-mode fiber cable for redundancy synchronization.
Q: What controller platforms are compatible with the 1756-SRM?
A: The module supports ControlLogix 5570, ControlLogix 5580, and Logix 5560 controller redundancy configurations.
Q: What are the specified power requirements of the 1756-SRM?
A: The module requires 800 mA at 5 VDC and 5 mA at 24 VDC, with a maximum power dissipation of 11.28 W.
Field Installation Guidelines
Install the 1756-SRM in a compatible ControlLogix chassis slot according to the redundancy system hardware configuration. Confirm chassis power availability and verify backplane connection before system startup.
Connect the SC fiber-optic interface using approved multi-mode fiber cables. Inspect fiber connectors before installation and prevent contamination, excessive bending, or mechanical stress on the optical cable.
Route fiber communication cables separately from high-current power conductors and switching circuits. Maintain proper cabinet grounding practices for adjacent electrical equipment.
Before commissioning, verify controller firmware compatibility, redundancy module configuration, fiber link status, and synchronization diagnostics through the ControlLogix programming environment.
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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