Siemens 6FX2007-1AD03 MINI-BHG Motor Feedback Cable

The Siemens 6FX2007-1AD03 MINI-BHG is a pre-assembled motor feedback cable designed for use with SINUMERIK CNC systems and SIMODRIVE servo drives. This cable connects the encoder of a servomotor to the drive amplifier, transmitting position and speed signals for closed-loop control. The MINI-BHG connector at one end ensures a secure, vibration-resistant connection in industrial environments.

Technical Specifications

• Connector Type: MINI-BHG (straight, metal housing)

• Cable Length: 3 meters (standard, other lengths available under different order numbers)

• Conductor Cross-section: 2 x 0.14 mm² (signal) + 2 x 0.5 mm² (power)

• Shielding: Braided copper shield with 85% coverage

• Temperature Range: -25°C to +80°C (static), -5°C to +70°C (flexing)

• Rated Voltage: 30 V

Compatibility

The 6FX2007-1AD03 is compatible with Siemens 1FK7, 1FT7, and 1PH7 series servomotors that feature the MINI-BHG encoder port. It is commonly paired with SINUMERIK 828D, 840D sl, and SIMODRIVE 611 drives. The cable supports both incremental encoders (sin/cos 1 Vpp) and absolute encoders (EnDat 2.1).

Construction and Durability

The cable uses PUR outer sheath, oil-resistant and flame-retardant according to IEC 60332-1-2. The MINI-BHG connector has an IP67 rating when mated, protecting against dust and temporary immersion. Gold-plated contacts ensure low contact resistance (<10 mΩ) and high corrosion resistance. The cable also features a flexible design for continuous flexing applications such as cable carriers.

Electrical Properties

Impedance is matched to 120 Ω for differential signals, minimizing reflections. The shield is connected to the connector housing for 360° EMI protection, reducing noise susceptibility in high-frequency drive environments. Maximum cable length for reliable feedback is 50 meters without signal degradation.

Installation Notes

The MINI-BHG connector has a threaded coupling nut that should be tightened by hand until snug (0.6 Nm). Do not use tools. The cable should be routed separately from power cables to avoid interference. For bending radii, the minimum dynamic radius is 75 mm, static 50 mm. Replacement part order number: 6FX2007-1AD03 is a direct substitution for 6FX2007-1AD01 with improved shielding.