PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1747-M2 is an SLC 500 Memory Module. It provides 4 kilobytes of non-volatile user backup memory for compatible controllers. This module supports fixed hardware controllers including 1747-L30A, 1747-L30C, 1747-L40A, and 1747-L40C. It also supports modular hardware controllers such as SLC 5/01 and SLC 5/02 processors. Integrated processor RAM can lose data when power drops and the lithium battery depletes. Installing this memory module safeguards the user program against accidental memory deletion.
The unit mounts directly onto the processor circuit board using specific J1 jumper settings. Installation or removal requires completely disconnecting system electrical power to prevent hardware damage. Electrostatic discharge can alter or destroy memory contents during handling. Technicians must hold the module solely by its carrier edges or plastic housing surfaces. Dirt and skin oils can corrode exposed metallic contact points over operating lifespans.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Category | PLCs |
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| UPC | 662073521655 |
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| Weight | 0.56 lbs (0.26 kg) |
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| Module Type | Memory Module |
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| Compatible Hardware Style | Fixed or Modular Hardware |
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| Compatible Processor | SLC 5/01; SLC 5/02; |
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| Memory | 32 kilobytes, 4,000 instructions |
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| User Memory | 64,000 Words |
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| Program Scan Time | 0.9 milliseconds |
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| Compatible Adapter | None required |
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| I/O Scan Time | 0.225 milliseconds |
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| Function | Program/Data Table Storage |
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| I/O Chassis | 3 |
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| Chassis Module Slots | 30 |
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| Memory size | 4 kilobytes |
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| Communication | Ethernet, RS-232 |
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| Backup Memory | Flash |
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| Configuration Hardware | PROM Programmer |
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| Installation | Processor PC Board |
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TECHNICAL INFORMATION
Features
- Provides 4 kilobytes of non-volatile backup memory.
- Protects user programs against RAM loss during battery exhaustion or power failure.
- Installs directly onto the processor printed circuit board.
- Requires configuration using dedicated J1 jumper settings on the processor.
- Features a protective carrier housing to assist with handling.
TECHNICAL INFORMATION
Applications
- Non-volatile program and data storage for SLC 500 fixed style automation controllers.
- Program backup retention across SLC 5/01 and SLC 5/02 modular processing systems.
TECHNICAL INFORMATION
Installation Guidelines
- Disconnect all power from the controller before inserting or removing the memory module.
- Configure the J1 jumper settings on the processor before seating the unit.
- Handle the module strictly by the carrier ends or plastic housing edges.
- Maintain an electrostatic-safe work environment free from oils, grease, and particulate dirt.
TECHNICAL INFORMATION
Configuration Guidelines
- Set processor hardware jumper J1 according to the system memory module configuration requirements.
- Use a compatible PROM programmer when configuring or writing non-volatile program tables.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley SLC 500 Fixed controllers, including 1747-L30A, 1747-L30C, 1747-L40A, and 1747-L40C.
- Compatible with Allen-Bradley SLC 5/01 modular processors, including 1711-L511 and 1747-L514.
- Compatible with Allen-Bradley SLC 5/02 modular processors, including 1747-L524.
TECHNICAL INFORMATION
Compliance and Certifications
- CE compliant when marked on the unit.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley SLC 500 Fixed controllers, including 1747-L30A, 1747-L30C, 1747-L40A, and 1747-L40C. Compatible with Allen-Bradley SLC 5/01 modular processors, including 1711-L511 and 1747-L514. Compatible with Allen-Bradley SLC 5/02 modular processors, including 1747-L524.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What controller models are compatible with the 1747-M2 memory module?
The 1747-M2 works with SLC 500 fixed controllers like 1747-L30A and 1747-L40A. It also works with SLC 5/01 and SLC 5/02 modular processors.
What is the memory capacity of the Allen-Bradley 1747-M2?
The 1747-M2 provides 4 kilobytes of non-volatile backup memory for storing program logic and data tables.
What precautions are required when installing the 1747-M2?
Always turn off controller power before installation. Handle the module by its carrier edges to prevent electrostatic discharge and contamination.
