6ES7431-7KF00-6AA0 Front Connector for S7-400 Analog Module
Series: SIMATIC S7-400 | Type: Front Connector | Part Number: 6ES7431-7KF00-6AA0
48-pole front connector with screw contacts, including reference temperature detection. Designed specifically for the 6ES7431-7KF00-0AB0 analog input module. Factory-tested and ready for immediate integration.
Technical Profile – Front Connector
- Product type: Front connector for S7-400 modules
- Connection method: Screw-type terminals (48-pole)
- Included with module: Yes, delivered as accessory to 6ES7431-7KF00-0AB0
- Weight: approx. 100 g
- Temperature reference: Built-in for cold junction compensation
Compatibility & System Integration
- Belongs to: SIMATIC S7-400 family
- Designed for: 6ES7431-7KF00-0AB0 analog input module
- Also compatible with: Other S7-400 analog modules with 48-pin interface (check manual)
- PROFIBUS/PROFINET: Not applicable (passive wiring component)
Installation & Wiring
- Direct plug-in to the module front
- Screw terminals for secure field wiring (up to 1.5 mm²)
- Integrated strain relief and coding elements
- Reference temperature sensor pre-wired internally
Oiltech Controls’s Insight
- This connector is often overlooked but critical for thermocouple measurements – the built-in reference junction ensures accurate cold-junction compensation.
- We recommend ordering a spare if you have multiple analog modules; they are frequently swapped during maintenance.
- Check the screw torque (0.5–0.6 Nm) to avoid loose connections – a common field issue.
Typical Equipment (Suitable For)
- SIMATIC S7-400 PLC systems (e.g., CPU 414, 416, 417)
- Analog input module 6ES7431-7KF00-0AB0 (primary application)
- ET 200M distributed I/O with S7-400 peripherals
- High-channel-count temperature/pressure measurement racks
5 Professional FAQs – Expert Advice
- Question: Is this connector included with the analog module?
Answer: Yes, it is part of the delivery for 6ES7431-7KF00-0AB0. However, we recommend keeping a spare for fast replacement. - Question: Can I use this connector with other S7-400 analog modules?
Answer: It fits mechanically, but the reference temperature detection is calibrated for 7KF00. For other modules, use the specific connector type. - Question: What wire size fits the screw terminals?
Answer: Solid or stranded wire up to 1.5 mm² (AWG 16) – use ferrules for stranded wires to ensure reliable contact. - Question: How do I verify the reference temperature sensor works?
Answer: After wiring, read the internal temperature via the module’s diagnostic buffer. A deviation >2 °C indicates a sensor issue. - Question: Should I buy a used or new connector?
Answer: New is preferred due to contact wear. If buying used, inspect screws and pins for corrosion – we test all refurbished units before shipment.
Shipping & Warranty
- Warranty: 12 months against defects in material and workmanship
- Dispatch: 24–28 hours after order confirmation (working days)
- Carriers: FedEx, UPS, DHL – express worldwide with tracking
- All shipments are insured and packed in anti-static bags
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts – we know Siemens inside out
- Global logistics network – fast and reliable delivery to your site
- Tested surplus and refurbished options available (cost-effective)
- 12-month warranty on every item – peace of mind included
- Technical verification performed before shipment – no DOA
- Expert support for obsolete and end-of-life control systems
Contact: info@oiltechcontrols.com | +86 158 8020 0923 (WhatsApp)
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