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1747-C20

Allen-Bradley 1747-C20 DH-485 Interface Cable 20 Feet

In stock (26 units), ready to be shipped

  • Manufacturer: Allen-Bradley

  • Product No.: 1747-C20

  • Product Type: Interface Cable

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 450g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Description

Allen-Bradley 1747-C20 SLC 500 Programming & Communication Cable

The Allen-Bradley 1747-C20 is a heavy-duty programming and communication cable engineered specifically for the SLC 500 programmable logic controller platform. Measuring 6.09 meters (20 feet) in length with an approximate total shipping weight of 0.45 kg (1.0 lb), this lightweight yet industrial-grade cable provides extended physical reach while maintaining high signal integrity for direct controller programming, interface module connection, and local data exchange across industrial machinery setups.

Key System & Operational Features

Operating over the proprietary DH-485 communication protocol, the Allen-Bradley 1747-C20 ensures deterministic serial transmission between SLC 500 CPUs and essential peripheral interfaces. Designed to withstand harsh electromagnetic industrial conditions, the cable features integral EMI shielding and an impressive isolation voltage rating of up to 1500V DC to protect sensitive control electronics against ground loops, high-voltage surges, and noise interference.

Technical Specifications

Manufacturer & Controller Series Allen-Bradley | SLC 500 Series
Part / Catalog Number 1747-C20
Product Type & Length Programming / Communication Cable | 6.09 m (20 ft)
Approximate Weight 0.45 kg (1.0 lbs)
Communication Protocol DH-485 Protocol
Electrical Isolation Rating 1500V DC Isolation Voltage
Connector Type & Shielding Clip-on connectors | EMI Protection Built-in

Peripheral & Accessory Compatibility

1747-AIC Link Coupler Fully supported for isolating DH-485 network drops and peripheral links
1747-PIC Interface Converter Supported for RS-232 to DH-485 level conversion during PC programming
1747-DTAM-E Access Module Supported for direct Data Table Access Module terminal interfacing

Installation & Handling Best Practices

  • Connector Retention: Engage the clip-on connector firmly until positive latching is confirmed to prevent intermittent serial communication drops.
  • Cable Routing & Weight Support: Maintain separation from high-voltage AC power lines. Secure the 0.45 kg cable along wire ducts to avoid excessive strain on terminal connection clips.
  • Bend Radius: Avoid sharp bends or excessive mechanical stress along the 20-foot cable body to preserve internal shielding and conductor integrity.

Frequently Asked Questions

Q1: What communication protocol is used by the Allen-Bradley 1747-C20 cable?
A1: The 1747-C20 communicates using Allen-Bradley's DH-485 protocol for SLC 500 systems.

Q2: What is the weight and length of the 1747-C20 cable?
A2: The cable has a length of 6.09 meters (20 feet) and weighs approximately 0.45 kg (1.0 lb).

Q3: Which peripheral devices are compatible with this cable?
A3: It connects SLC 500 controllers to devices including the 1747-AIC Isolated Link Coupler, 1747-PIC Personal Interface Converter, and 1747-DTAM-E Data Table Access Module.

Product Resources

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🏷️ Tags: Interface Cable
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  • Follow manufacturer instructions and best practices during installation.

In-stock items are typically dispatched the same business day. For products not currently in stock, dispatch times may vary based on availability. International shipping is available, and shipping costs are calculated according to destination, weight, and carrier selection.

Returns are accepted within 30 days of receipt, provided items are unused and in original condition. Return shipping costs are the responsibility of the customer. Please contact us before returning any item to receive return authorization.

For more details, please review our Shipping & Return Policy.

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