Product Overview

Model: 6SL3120-2TE21-8AC0
Classification: Double Motor Module for SINAMICS S120 drive systems (Booksize C-type)
Purpose: Converts a 600 V DC link into two 400 V AC 3-phase outputs. Provides dual motor drive capability with 18 A continuous current per channel and peak handling up to 36 A. Designed for multi-axis drive applications with optimized performance, integrated DRIVE-CLiQ, and support for Safety Integrated functions.

Electrical & Operational Specifications

• DC Link Voltage: 510–720 V DC (nominal 600 V DC)

• Electronics Power Supply: 24 V DC (–15% / +20%)

• Output Voltage: 400 V, 3-phase (per channel)

• Output Current (each motor):

  • Base Load (Ih): ~15.3 A

  • Continuous (Rated, In): 18 A

  • Intermittent (S6 duty, 40%): ~24 A

  • Peak Current (Imax): 36 A

• Rated Motor Power (each motor): ~9.7 kW

• DC-Link Current: ~43 A

• DC-Link Capacitance: 705 µF

• Rated Pulse Frequency: 4.0 kHz

• Output Frequency Range:

  • Servo: up to 650 Hz (with license)

  • Vector: up to 300 Hz

  • V/f: up to 600 Hz

• Cooling: Internal forced-air (~0.016 m³/s airflow)

• Power Loss (typical / max): ~0.28 kW / ~0.35 kW

• Sound Pressure Level: ~60 dB (at 1 m)

• Ambient Conditions: 0–40 °C, up to 1000 m altitude without derating

• Safety Integrity: SIL 2 (IEC 61508); PL d, Cat 3 (ISO 13849-1)

• Control Interface: Integrated DRIVE-CLiQ ports

Physical Specifications

• Dimensions (W × H × D): ~100 × 380 × 270 mm

• Weight: ~7.7 kg (~17 lb)

• Enclosure Rating: IP20 / UL open-type

Interface & Capacity

• Busbar Capacity:

  • 24 V electronics busbar: 20 A

  • DC link busbars: ~200 A (with reinforced accessory bridges)

• Motor Connections: Terminals support 2–6 mm² (AWG 16–10); PE via M5 screw

• Maximum Motor Cable Length:

  • Shielded: 70 m

  • Unshielded: 100 m

• Certifications: CE, cULus, SIL 2, PL d, Cat 3

Summary Table