Product Type: Active Interface Module (AIM) for SINAMICS S120 Chassis Drive | Status: Active (as of Jan 2026) | Core Function: DC-link precharging, braking resistor control, line-side monitoring & safety interlock
Input: 3AC 380–480 V, 50/60 Hz | Output: DC-link 510–720 V DC | Rated Power: 580 kW (at 400 V 3AC)
1. Electrical Ratings
| Parameter | Value | Notes |
|---|---|---|
| Line Voltage (3AC) | 380 … 480 V (±10%) | 50/60 Hz |
| DC-Link Voltage | 510 … 720 V DC | Permissible range |
| Rated Line Current (IN) | 870 A | At 400 V 3AC, 580 kW |
| Max. Continuous Line Current | 950 A | Derating for high temp/altitude |
| Precharging Current (Typ.) | 10 A | DC-link precharge via internal resistor |
| Precharging Time (Typ.) | ≤ 10 s | Depends on DC-link capacitance |
| Braking Resistor Control | External braking resistor (BR) | Max. braking power: see system config |
| 24 V DC Aux Supply | 24 V DC (-15% / +20%) | 20.4–28.8 V DC |
| Aux Current (Max.) | 2.5 A | Electronics + control circuits |
| Power Loss (Typ./Max.) | 1.8 kW / 2.2 kW | At rated load (incl. precharge/aux) |
| Isolation Voltage | 3.0 kV AC (1 min) | Line/DC/aux to ground |
| Safety Integrated | SIL 2 (IEC 61508), PL d (EN ISO 13849-1), Cat. 3 | Safe torque off (STO) compatible |
2. Mechanical & Environmental Data
| Parameter | Value | Notes |
|---|---|---|
| Dimensions (W×H×D) | 400 mm × 800 mm × 450 mm | 15.75 × 31.50 × 17.72 in |
| Net Weight | 120 kg | 264.55 lb |
| Degree of Protection | IP20 (front), IP00 (rear) | Forced-air cooled chassis |
| Cooling | Forced-air cooling (internal fans) | Air flow: 0.8 m³/s |
| Ambient Temp (Operation) | 0 … 40 °C (32 … 104 °F) | Derate above 40 °C |
| Installation Altitude (No Derating) | ≤ 1000 m (3281 ft) | 1% derate per 100 m above 1000 m |
| Sound Pressure Level (1 m) | 72 dB (A) | At rated load |
| Line Connection | M12 bolt terminals | Conductor cross-section: 95 … 300 mm² (2/0 … 600 MCM) |
| DC-Link Connection | M12 bolt terminals | Busbar rated for 1200 A |
| PE Connection | M12 screw | Low-impedance ground required |
| Max. Cable Length (Line) | Shielded: 50 m (164 ft); Unshielded: 100 m (328 ft) | Shorten for high EMC environments |
3. Key Features & Standards
- Precharge & Discharge: Automatic DC-link precharge; safe discharge via internal resistor
- Braking Resistor Management: Overvoltage protection, thermal monitoring, fault signaling
- Line Monitoring: Over/undervoltage, phase loss, frequency, overcurrent detection
- Safety: STO input, emergency stop interface, safe DC-link discharge
- Compliance: CE, cULus, IEC 61800-7, EN 61800-3, EN 61000-6-2/-3
- Interfaces: DRIVE-CLiQ (to Control Unit), 24 V I/O, STO, braking resistor, line/DC terminals
4. Installation & Application Notes
- Mount in vertical orientation (top/bottom air flow)
- Derate for pulse load, high altitude, or ambient >40 °C
- Must be used with matching S120 Chassis Power Modules (e.g., 6SL335x series)
- Braking resistor sizing: follow Siemens S120 sizing tool for dynamic braking applications
- Technical data subject to change; always verify with latest official docs
