Schneider ATV930P75N4 Altivar Process ATV930 Variable Frequency Drives

The following is a detailed parameter introduction of Schneider ATV930P75N4 inverter, which belongs to the pump-specific inverter in the ATV930 series and is optimized for pump loads:

1. Basic specifications

Model: ATV930P75N4

Applicable motor power:

Standard load (variable torque): 75kW

Heavy load (constant torque): 55kW

Power supply specifications:

Voltage range: 3-phase 380 - 480V (±15%)

Frequency: 50/60Hz (±5%)

Protection level: IP21 (needs to be installed in the control cabinet)

Cooling method: forced air cooling

2. Performance parameters

Output current:

Standard load: 156A (380V) / 136A (480V)

Heavy load: 134A (380V) / 118A (480V)

Overload capacity:

Standard load: 110% for 60 seconds, 150% for 2 sec

Heavy load: 150% for 60 seconds, 180% for 2 seconds

Output frequency range: 0.1 - 599Hz

Speed regulation accuracy:

Open loop: ±0.5% (maximum frequency)

Closed loop: ±0.01% (maximum frequency, encoder required)

3. Special functions for pumps

PID control: Built-in PID regulator, supports closed-loop control of pressure, flow, liquid level, etc., and can achieve constant pressure water supply.

Multi-pump control: Supports cyclic soft start and master-slave control of 1-4 pumps to achieve intelligent switching of pump groups.

Sleep/wake-up function: Automatically sleep when water consumption is lower than the set value, and automatically wake up when demand is restored.

Anti-dry-run protection: Monitor the liquid level to prevent the pump from idling and damage.

Pump cleaning mode: Automatically start and stop regularly to prevent scaling of the pump body.

Smooth acceleration and deceleration: Optimized S-curve acceleration and deceleration to reduce water hammer effect.

4. Input/output interface

Digital input: 8 programmable inputs (DI1 - DI8), support 24V DC.

Analog input: 3 (AI1/2/3), support 0 - 10V or 4 - 20mA, can be configured as PID given or feedback.

Analog output: 2 (AO1/2), 0 - 10V or 4 - 20mA, can output parameters such as frequency and current.

Relay output: 3 (RO1 - RO3), 250V AC/3A, for alarm or status indication.

Communication interface:

Modbus RTU (RS485) and Modbus TCP (Ethernet) are standard.

Profibus DP, DeviceNet, Ethernet/IP and other expansion cards are optional.

5. Safety and protection functions

Safe torque off (STO): meets SIL3/PLe safety level and is implemented through safety input module.

Overload protection: thermal overload relay (electronic thermal protection).

Short circuit protection: built-in fast fuse.

Undervoltage/overvoltage protection: automatic detection and protection.

Ground fault protection: monitor ground current to prevent leakage.

Motor protection: supports PTC thermistor input to prevent motor overheating.

6. Physical characteristics

Dimensions (H×W×D): 922mm × 290mm × 325.5mm

Weight: 59.5kg

Installation: Wall-mounted

Ambient temperature: -15℃ to + 50℃ (derating is required if the temperature exceeds 40℃)

Relative humidity: 95% (no condensation)

Altitude: ≤1000m (derating is required if the temperature exceeds 40℃)

7. Model naming analysis

ATV930: Altivar Process series inverter

P: Pump Application

75: Suitable for 75kW motor (standard load)

N4: 3-phase 400V power supply specification

8. Typical application scenarios

Constant pressure water supply system: high-rise building water supply, industrial circulating water system.

Sewage treatment: sewage lifting pump, aerator control.

Air conditioning chilled water/cooling water system: energy-saving speed control.

Agricultural irrigation: automatic adjustment of pump speed according to water consumption.