Product Overview

The Allen-Bradley 1747-BAJMPR SLC 500 Programmable Controller Battery Jumper is a small accessory designed for battery-related configuration and maintenance procedures in Allen-Bradley SLC 500 programmable controller systems.

The SLC 500 family is widely used in industrial automation applications involving machine sequencing, equipment control, process monitoring, and production-line coordination. Its processors contain memory used to retain user programs and controller data. Depending on the processor model and installed configuration, memory retention may be supported by an internal capacitor, an optional lithium battery, or a combination of backup arrangements.

The 1747-BAJMPR is associated with the battery connection arrangement of compatible SLC 500 controllers. It is important to distinguish this component from the 1747-BA lithium battery. The battery supplies backup energy for memory retention, while the jumper is used for the relevant battery-socket configuration when a battery is not installed.

During installation of a battery in a new processor, the original jumper may need to be removed from the battery socket. Rockwell Automation’s SLC 500 documentation instructs users to retain this jumper for possible future use when operating without the optional battery.

This makes the 1747-BAJMPR a useful maintenance accessory for facilities that operate legacy SLC 500 equipment. Keeping the correct jumper available can help maintenance personnel manage battery-related configurations without relying on improvised electrical connections.

The 1747-BAJMPR is a small component, but its correct use matters. It should only be installed in the designated position on a compatible controller, following the processor-specific installation instructions.

Technical Specifications

Note: Dimensions and weight are the supplied product-listing values. Confirm the physical item and packaging specifications before using them for shipping or inventory calculations.

Function and Working Principle

The 1747-BAJMPR is a configuration accessory rather than an active electronic module. It does not independently provide power, process signals, execute logic, or store controller programs.

Its function is associated with the battery connection arrangement inside compatible SLC 500 processors.

1. Battery Socket Configuration

SLC 500 processors may use an optional replaceable battery to provide backup power for RAM. When the battery is not installed, the processor’s battery socket may require the appropriate jumper configuration, depending on the processor model and its installation instructions.

The 1747-BAJMPR is intended for this battery-jumper application. It should be fitted only in the designated socket and in accordance with the relevant controller documentation.

2. Supporting Battery Installation

When an optional battery is installed in a new processor, the existing jumper must be removed from the battery socket as instructed by the manufacturer.

The removed jumper should be stored safely. It may be needed again if the controller is subsequently operated without the optional battery.

This procedure helps maintenance personnel preserve the original configuration accessory rather than replacing it with an improvised connection.

3. Supporting Battery Removal

When a controller is configured to operate without its optional battery, the appropriate jumper arrangement may be required.

The correct procedure depends on the exact SLC 500 processor. Maintenance personnel should identify the processor catalog number and consult its installation manual before changing the battery connection.

4. No Independent Power Supply Function

The 1747-BAJMPR is not a battery, power supply, or energy-storage device. It does not provide the backup voltage required to retain controller memory.

If a processor requires battery backup, the correct replacement battery must be installed. A jumper cannot replace the memory-retention function of the battery.

Role in Industrial Control Systems

The 1747-BAJMPR supports maintenance of the battery configuration in SLC 500 programmable controller installations.

Although it does not participate directly in PLC logic execution, it is associated with an important part of controller maintenance: preserving the intended memory-backup arrangement.

PLC Memory Configuration

The SLC 500 processor stores user programs and operating data in memory. Depending on the processor model, a capacitor provides temporary memory retention, while an optional battery can extend backup capability.

The jumper is relevant to the battery connection arrangement when the optional battery is not installed.

Controller Maintenance

During servicing, technicians may need to remove, replace, or reinstall the optional battery. Having the correct jumper available helps them restore the intended configuration when the battery is not being used.

Spare-Parts Management

Legacy automation installations often require small accessories that are easy to overlook during spare-parts planning. A missing battery jumper can complicate maintenance when a controller needs to be returned to a battery-free configuration.

Keeping the correct accessory with the processor’s maintenance spares can reduce unnecessary delays.

Industrial Applications

The 1747-BAJMPR is used in maintenance activities involving compatible SLC 500 controllers. It is not a general-purpose electrical jumper for unrelated PLC families.

1. Manufacturing Automation

SLC 500 controllers are used in manufacturing equipment for sequencing, interlocking, machine operation, and production control.

The 1747-BAJMPR may be relevant when technicians maintain the battery configuration of these controllers.

2. Packaging Machinery

Packaging equipment can use SLC 500 processors to coordinate conveyors, filling systems, labeling devices, and packaging sequences.

During controller servicing, battery-related accessories may be required to maintain the correct processor configuration.

3. Material Handling Systems

Conveyors, transfer stations, and other material-handling equipment may rely on SLC 500 controllers.

The jumper can be kept as a maintenance spare for compatible processors that require the designated battery-socket configuration.

4. Process Control Equipment

Some legacy process-control installations use SLC 500 processors for auxiliary equipment, pump control, machine interlocks, and equipment sequencing.

Maintaining the correct battery configuration is part of preserving reliable controller operation.

5. Legacy PLC Maintenance

The 1747-BAJMPR is particularly relevant to facilities maintaining older SLC 500 systems. Where equipment remains in service, small accessories can be important for completing maintenance procedures and preserving the original hardware arrangement.

Installation and System Integration

Correct installation is essential because the jumper is associated with the processor’s battery connection. It should not be installed in an arbitrary connector or used as a substitute for an approved electrical connection.

1. Identify the Processor Model

Before installation, identify the exact SLC 500 processor catalog number.

Different processors may have different battery installation procedures. The correct jumper arrangement should always be checked against the documentation for the specific processor.

2. Back Up the Controller Program

Before performing battery-related maintenance, back up the user program and relevant controller data whenever possible.

This is an important precaution when working with legacy equipment, especially if the existing battery condition is unknown.

3. Follow the Correct Power-Isolation Procedure

The required power procedure depends on the processor model.

For example, Rockwell Automation’s fixed-controller documentation instructs users to back up the ladder program and disconnect processor power before accessing the battery compartment. Other SLC 500 processor models have their own procedures.

Do not assume that every SLC 500 processor uses the same battery replacement method.

4. Remove or Install the Jumper Correctly

When installing an optional battery in a new processor, remove the jumper from the designated battery socket as instructed by the manufacturer.

If the controller is to operate without the optional battery, reinstall the correct jumper only when required by the processor’s documented configuration.

Do not force the component into the socket. Check its orientation and fit before completing the procedure.

5. Protect the Processor from Electrostatic Discharge

Electronic controller components can be damaged by electrostatic discharge. Use appropriate ESD precautions when opening the processor or handling internal accessories.

Avoid touching exposed electronic contacts unnecessarily, and keep the jumper in a clean, dry storage location.

6. Verify the Final Configuration

After completing maintenance, inspect the battery socket and confirm that the intended configuration has been restored.

Close the processor housing, restore power according to the applicable procedure, and verify normal controller operation. Check memory-retention status and any relevant battery indicators where applicable.

Compatible System Components

The 1747-BAJMPR belongs to the SLC 500 accessory environment. Compatibility should be confirmed against the processor’s battery connection arrangement.

The table describes related system components. It does not indicate that these items are included with the 1747-BAJMPR.

Alternative Models and Replacement Considerations

The 1747-BAJMPR is a specific battery-jumper accessory. It should not be replaced with a general-purpose jumper, a battery, or an accessory from another PLC family without explicit manufacturer confirmation.

When sourcing a replacement, check:

• The complete catalog number.
• The physical shape and contact arrangement.
• Compatibility with the processor’s battery socket.
• The intended battery-installed or battery-removed configuration.
• The condition of the contacts and housing.
• Whether the item is supplied individually or as part of a maintenance kit.

A jumper that looks similar may have different dimensions or contact spacing. Always verify compatibility before installation.

Key Advantages

Correct Battery Configuration

The 1747-BAJMPR is intended for the battery-jumper configuration of compatible SLC 500 processors.

Useful Maintenance Accessory

It can be retained as a spare for maintenance procedures involving optional battery installation or removal.

Supports Legacy Equipment Maintenance

For facilities continuing to operate SLC 500 controllers, maintaining the correct original accessories can simplify service work.

Compact Component

Its small form factor makes it convenient to store with PLC maintenance spares and controller accessories.

Prevents Improvised Substitution

Using the correct catalog-numbered accessory helps avoid relying on unverified electrical jumpers or unsuitable components.

Complements the 1747-BA Battery

The jumper and battery serve different purposes. Keeping both components available allows maintenance personnel to address the relevant battery configuration requirements.

Technical FAQs

1. What is the Allen-Bradley 1747-BAJMPR?

The 1747-BAJMPR is a battery jumper accessory associated with the Allen-Bradley SLC 500 programmable controller family. It is used for the designated battery-socket configuration when the optional battery is not installed.

2. Is the 1747-BAJMPR a lithium battery?

No. The 1747-BAJMPR is a jumper, not a battery. The related 1747-BA is the lithium battery used for optional memory backup in compatible SLC 500 processors.

3. What is the main purpose of the battery jumper?

It supports the battery connection configuration specified for compatible processors when the optional backup battery is not being used.

4. When should the jumper be removed?

When installing an optional battery in a new processor, the manufacturer instructs users to remove the jumper from the battery socket and retain it for possible future use.

5. Can the 1747-BAJMPR replace the 1747-BA battery?

No. The jumper does not provide electrical energy and cannot perform the memory-backup function of the lithium battery.

6. Which PLC family is this accessory associated with?

It is associated with the Allen-Bradley SLC 500 programmable controller family. Confirm the exact processor model before use.

7. Can I use a generic jumper instead?

A generic jumper should not be used unless its electrical and mechanical compatibility has been explicitly confirmed by the relevant technical documentation. The correct catalog-numbered accessory is preferable.

8. Does the jumper affect PLC program execution?

It is not a logic-processing module and does not execute user programs. Its role is related to the processor’s battery configuration.

9. What precautions should be taken during installation?

Back up the controller program, follow the processor-specific power-isolation procedure, use ESD protection, and handle the component carefully. Do not assume that all SLC 500 processors use identical battery procedures.

10. What should be checked when purchasing a replacement?

Verify the 1747-BAJMPR catalog number, physical condition, contact arrangement, and suitability for the target processor. Confirm whether the product is supplied individually or with other maintenance accessories.

Procurement and Maintenance Recommendations

When purchasing the Allen-Bradley 1747-BAJMPR, confirm that the catalog number matches the required SLC 500 battery-jumper accessory. Because the component is small, visual identification alone may not be sufficient. Check the product label, physical design, and compatibility information before ordering.

For industrial facilities maintaining legacy SLC 500 equipment, it is useful to keep battery-related accessories together with processor-specific maintenance documentation. This helps technicians identify the correct procedure when installing or removing an optional battery.

During maintenance, back up the PLC program and follow the exact instructions for the installed processor. Battery handling and power-isolation procedures can vary across SLC 500 models, so the relevant manual should always take priority over a general procedure.

Store the jumper in a clean, dry location where it will not be lost or damaged. Avoid bending its contacts or exposing it to unnecessary mechanical stress.

Conclusion

The Allen-Bradley 1747-BAJMPR SLC 500 Programmable Controller Battery Jumper is a dedicated accessory for battery-related configuration and maintenance in compatible SLC 500 controllers. It is used in the designated battery-socket arrangement when the optional backup battery is not installed and should be distinguished from the 1747-BA lithium battery.

For facilities maintaining legacy Allen-Bradley PLC systems, retaining the correct jumper can support proper maintenance and help preserve the intended processor configuration. Always verify the processor model and follow the manufacturer’s installation instructions before use.