The ATV9B0C31Q4: Line current at 400 V normal duty is 491 A; heavy duty draws 389 A. Apparent power is 340 kVA normal duty, 270 kVA heavy duty. These figures govern cable sizing and upstream breaker selection — the heavy-duty current is the one to use for continuous motor loading in a constant-torque application. Switching frequency is adjustable from 2 to 8 kHz, with derating above 2.5 kHz. Safe torque off (STO) is built in to SIL 3, eliminating the need for an external safety relay in most single-axis stop circuits. The drive also includes motor and drive thermal protection, phase-loss detection, and DC bus overvoltage monitoring — all standard on the ATV900 platform but worth confirming against your machine's safety requirements.
Fieldbus and I/O options
The drive ships with two RJ45 ports for Ethernet IP/Modbus TCP and one RJ45 for Modbus serial (RS-485, 2-wire, RTU frame). Slot A accepts optional communication modules for Profibus DP V1, PROFINET, DeviceNet, CANopen, or EtherCAT. Slots B and C can take digital/analog I/O extension or relay output modules, plus encoder interfaces (digital 5/12 V, analog, or resolver). That gives flexibility to match existing fieldbus architecture without a separate gateway.
Cabinet-mount, IP00 — requires an IP21 or IP54 enclosure. Operating altitude up to 4800 m with derating above 1000 m. Ambient conditions: 5–95 % RH non-condensing, vibration tested to 0.5 gn at 13–200 Hz. Forced convection cooling; 73 dB noise level at full load. The kit includes the power module (160 kW base), control unit, mounting hardware, and fuses — a modular build that simplifies panel layout.