ALLEN BRADLEY 1747-SDN DeviceNet Scanner Module User Manual

1. Introduction

This manual provides essential information for the installation, operation, and maintenance of the Allen-Bradley 1747-SDN DeviceNet Scanner Module. This module is designed for use with SLC 500 programmable controllers, specifically compatible with SLC 5/02 and higher systems. It functions as a DeviceNet scanner, enabling communication between the SLC 500 processor and DeviceNet devices on an industrial network. The module is a Printed Circuit Board (PCB) type, identified as Series B.

Figure 1.1: Front view of the Allen-Bradley 1747-SDN DeviceNet Scanner Module, showing status indicators and connection terminals.

2. Setup and Installation

The 1747-SDN module is a PCB-based component intended for integration into an SLC 500 chassis. Proper installation ensures reliable operation and network communication.

2.1. Safety Precautions

• Ensure all power to the SLC 500 chassis is disconnected before installation or removal of the module.
• Follow all local and national electrical codes.
• Handle the module by its edges to avoid damage to electronic components and static discharge.
• Verify correct wiring before applying power.

2.2. Module Installation

1. Power down the SLC 500 system and disconnect all power sources.
2. Locate an available slot in the SLC 500 chassis.
3. Align the module with the chassis backplane connector.
4. Gently push the module into the slot until it is fully seated and secured.
5. Ensure any retaining clips or screws are fastened to hold the module in place.

Figure 2.1: Side view of the 1747-SDN module, illustrating the PCB and connection points for chassis integration.

2.3. Wiring and Connectivity

Connect the DeviceNet communication cable to the designated DeviceNet port on the module. The module operates with a power input of 5-24 VDC and draws 90-500 mA. Refer to the SLC 500 system documentation for specific wiring diagrams and DeviceNet network configuration.

Figure 2.2: Close-up of the module's identification label, showing "SLC 500 DeviceNet Scanner Module" and "CAT. 1747-SDN". This label provides critical information for proper system configuration.

3. Operating Instructions

Once installed and powered, the 1747-SDN module facilitates communication between the SLC 500 processor and DeviceNet devices. The module's status indicators provide visual feedback on its operational state.

3.1. Status Indicators

The front panel of the module features several LED indicators:

• STATUS: Indicates the module's operational status (e.g., power, self-test results).
• MODULE: Reflects the status of the module itself within the SLC 500 chassis.
• NET: Shows the status of the DeviceNet network connection.
• ADDRESS/ERROR: Can indicate the configured DeviceNet address or signal an error condition.

Refer to the SLC 500 and DeviceNet documentation for detailed interpretations of these indicator states.

4. Maintenance

The Allen-Bradley 1747-SDN module is designed for robust industrial environments and typically requires minimal maintenance.

4.1. General Care

• Keep the module and surrounding area clean and free from dust, moisture, and corrosive substances.
• Periodically inspect connections for tightness and signs of wear or corrosion.
• Ensure adequate ventilation around the SLC 500 chassis to prevent overheating.

4.2. Cleaning

If cleaning is necessary, power down the system and use a soft, dry, lint-free cloth. Avoid using harsh chemicals or abrasive materials.

Figure 4.1: Back view of the 1747-SDN module, displaying the printed circuit board and its components. Regular inspection of such components can help identify potential issues.

5. Troubleshooting

If the 1747-SDN module is not functioning as expected, consult the following basic troubleshooting steps. For detailed diagnostics, refer to the SLC 500 and DeviceNet system manuals.

• No Power/Module Not Responding:
  • Verify that the SLC 500 chassis is powered on.
  • Ensure the module is correctly seated in its slot.
  • Check the power supply to the SLC 500 system.
• Network Communication Issues (NET indicator):
  • Inspect DeviceNet cabling for proper connection and integrity.
  • Verify DeviceNet network power.
  • Check DeviceNet network configuration in the SLC 500 programming software.
  • Ensure DeviceNet devices are properly addressed and terminated.
• Error Indication (ADDRESS/ERROR indicator):
  • Consult the SLC 500 programming software for specific error codes or messages related to the 1747-SDN module.
  • Check for duplicate DeviceNet addresses on the network.

6. Specifications

7. Warranty Information

Specific warranty details for the Allen-Bradley 1747-SDN DeviceNet Scanner Module are not provided in the available product information. Please refer to the original purchase documentation or contact Allen-Bradley directly for warranty terms and conditions.

8. Support and Contact

For technical support, further documentation, or service inquiries regarding the 1747-SDN module, please refer to the official Allen-Bradley (Rockwell Automation) website or contact their customer support channels.

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