Allen-Bradley 1757-SRM/B ControlLogix System Redundancy Module
$123.00
$320.00
Description
Allen-Bradley 1757-SRM/B ControlLogix System Redundancy Module
Configured for controller synchronization and redundant processor coordination in ControlLogix platforms, the Allen-Bradley 1757-SRM/B (1757-SRM System Redundancy Module) provides direct physical data communication between primary and secondary controller chassis through fiber optic links.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1757-SRM/B |
| Brand | Allen-Bradley |
| Origin | United States |
| Module Type | ControlLogix System Redundancy Module |
| Compatibility | ControlLogix 5570 and 5580 controller systems |
| Redundancy Function | Hot standby controller synchronization with bumpless transfer |
| Communication Interface | Fiber optic synchronization via 1757-SRC cables |
| Fiber Connector | SC fiber-optic connector |
| Fiber Wavelength | 1300 nm |
| Supported Cables | 1757-SRC1, SRC3, SRC10, SRC50, SRC100 |
| Backplane Current | 800 mA @ 5 VDC, 5 mA @ 24 VDC |
| Power Consumption | 11.28 W maximum |
| Thermal Dissipation | 38.49 BTU/hr maximum |
| Weight | 0.45 kg |
| Dimensions | 14.5 x 7 x 14 cm |
| Operating Temp | 0 to 60 deg C |
| Mounting | Standard 1756 chassis slot |
| Indicators | Diagnostic LEDs for module status, redundancy state, and faults |
| Enclosure Rating | Open-style module |
| Conformal Coating | Available option for harsh environments |
EtherNet/IP and ControlLogix Redundancy Synchronization
The 1757-SRM/B operates as the synchronization interface between redundant ControlLogix controller assemblies. The module transfers redundancy state information through dedicated fiber optic communication paths and maintains controller pairing status during operation.
The module supports hot standby configurations with Removal and Insertion Under Power (RIUP) capability when installed in a compatible ControlLogix chassis. Backplane communication is managed through the 1756 chassis infrastructure for module status exchange and diagnostic data handling.
Frequently Asked Questions
Q: What communication medium is used for synchronization between redundant controller chassis?
A: The 1757-SRM/B uses fiber optic synchronization communication through 1757-SRC series cables with SC connectors.
Q: What are the backplane power requirements of the module?
A: The module requires 800 mA from the 5 VDC backplane supply and 5 mA from the 24 VDC backplane supply.
Q: Can the module be replaced while the ControlLogix chassis remains powered?
A: The module supports RIUP operation when installed within a compatible ControlLogix chassis configuration.
Field Installation Guidelines
Install the 1757-SRM/B in an approved 1756 chassis slot with correct chassis grounding and power distribution practices. Verify that the fiber optic synchronization cables are installed with appropriate bend radius control and protected from mechanical stress.
Route fiber cables separately from high-current conductors and sources of electromagnetic interference. Maintain clean SC connector surfaces and use proper fiber handling procedures during installation or replacement.
Confirm controller redundancy configuration through RSLogix 5000 software after installation. Verify diagnostic LED status, synchronization state, and controller communication before placing the redundant system into service.
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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