LTi SO84.090 ServoOne Drive Controller 90A BG6

The LTi SO84.090 is a high-power three-phase servo drive in the BG6 housing, offering 90A continuous and 205A peak current. Available with air or liquid cooling, it targets heavy industrial applications requiring high torque and robust performance.

Key Specifications

• Rated current: 90 A (at 400V, 8 kHz), peak: 205 A (0-5 Hz)

• Mains: 3 x 230V to 480V AC ±10%

• Switching frequencies: 4, 8, 12, 16 kHz (air); 4,8 kHz (liquid)

• BG6 dimensions (air): width 280 mm, height 540 mm, depth 322 mm, weight 28 kg

• External mains choke mandatory (uk = 2%)

• Integrated brake chopper with high power rating

Technical Data

Installation Notes

For air-cooled BG6, maintain at least 200 mm vertical clearance. For liquid-cooled, a cooling circuit with 8 l/min nominal flow is required. Use shielded motor cables (max 95 mm² terminal capacity). An external mains choke is mandatory. The PE conductor must be sized accordingly (≥10 mm² copper or two conductors). For EMC compliance, use external mains filter for BG6 (no internal filter).

Commissioning

Commission with DriveManager 5. The 7-segment display guides initial setup. Enable STO (ISDSH and ENPO at +24V) to release power stage. The drive supports various fieldbus options (EtherCAT, SERCOS) and iPlc programming. Parameter sets can be stored on MMC card for series commissioning.

Braking Resistor Sizing

The internal brake chopper handles regenerative energy. With an external 12 Ω braking resistor, continuous braking power is 56 kW, peak 56 kW. For applications with frequent braking, ensure the resistor’s thermal capacity is sufficient. A bimetal switch in the resistor should be wired to a digital input for overtemperature protection.

Applications

Suitable for servo motors up to 45 kW (400V). Typical uses include large presses, extruders, cranes, wind turbines, and heavy-duty test rigs. The 205A peak current ensures excellent dynamic response.

Compliance

Complies with EN 61800-5-1, EN 61800-3 (C2/C3 with external filter), LVD, EMC. UL approval for BG6 with class RK1 fuses (e.g., 3 x 100 A).

The LTi SO84.090 provides a robust, high-power solution for the most demanding single-axis servo systems.