Siemens 6ES5711-0AD20 | SIMATIC S5 Interface Cable Connector

The Siemens 6ES5711-0AD20 terminates the interface cable between S5 central and expansion racks. This connector attaches to both ends of the Siemens 6ES5710-0AD20 connecting cable. It provides reliable electrical contact for parallel bus signals across remote racks. You can assemble this field-installable connector without special crimping tools. Consequently, you can create custom cable lengths for your specific expansion layout.

Technical Specifications Overview

Parameter	Detailed Specification
Model	Siemens 6ES5711-0AD20
Category	SIMATIC S5 Cable Connector (for interface bus)
Connector Type	20-pin female (IDC insulation displacement)
Compatible Cable	Siemens 6ES5710-0AD20 (flat ribbon cable, 20-conductor)
Termination Method	Insulation displacement (IDC) – no soldering
Cable Width	25.4 mm (1 inch) for 20-pin flat cable
Contact Material	Phosphor bronze with gold plating
Housing Material	PBT thermoplastic (UL94 V-0 rated)
Polarization	Integrated key and slot system
Dimensions (approx.)	35 mm x 20 mm x 12 mm
Weight	0.015 kg (15 grams) per unit
Number of Components	2 connector halves + strain relief
Operating Temperature	-20°C to 70°C
Insertion Cycles	Minimum 200 mating cycles

Functional Features and Connection Details

The Siemens 6ES5711-0AD20 uses IDC technology for quick field assembly. You simply press the connector onto the flat cable using a vise or clamp. The internal contacts pierce the wire insulation to make electrical connection. Furthermore, the included strain relief prevents cable pull-out from the connector body.

This connector mates directly with the 20-pin frontal connectors on S5 interface modules. The polarization feature prevents incorrect orientation during assembly. Additionally, the gold-plated contacts resist corrosion in industrial environments. You can reuse the connector if you carefully remove it from an old cable.

Assembly and Installation Guidelines

First, cut your Siemens 6ES5710-0AD20 flat cable to the required length. Next, separate the two connector halves by removing the center clip. Then, position the cable between the halves with proper wire alignment. Finally, press the assembly firmly using a bench vise or dedicated IDC tool.

You must ensure all 20 conductors seat fully inside the connector body. The module does not include any shielding or grounding provisions. Therefore, keep the cable away from high-voltage AC wiring. Always test continuity after assembly before installing in the rack.

This cable connector works perfectly for building custom-length expansion cables. You can repair damaged cable ends without replacing the entire run. The Siemens 6ES5711-0AD20 suits both central-to-expansion and expansion-to-expansion links. Each cable requires two connectors (one at each end).