Siemens SINAMICS G120 PM240-2 37kW 480V Power Module

Technical Overview

High-performance SINAMICS G120 PM240-2 power module, 37kW (LO)/30kW (HO), 3-phase 380-480V input, 0-550Hz output. IP20 rated for cabinet integration.

Key Features

Modular design, compatible with SINAMICS G120 Control Units.
IP20 protection rating for control cabinet integration.
Integrated braking chopper.
Supports both induction and synchronous motors.
Wide input voltage range: 3-phase 380-480 V AC (+10%/-20%), 47-63 Hz.
Output frequency range: 0-550 Hz (V/f control), 0-200 Hz (vector control).
High efficiency (η = 0.98) and power factor (λ = 0.95).
Internal air cooling system.
Overload capacity: 110% (LO) / 150% (HO) for 57 seconds; 150% (LO) / 200% (HO) for 3 seconds, with a 300s cycle time.

Technical Specification Matrix

Parameter	Value
Input Voltage (3-phase AC)	380 - 480 V ±10%
Input Frequency	47 - 63 Hz
Rated Input Current (Low Overload LO)	70.00 A
Rated Input Current (High Overload HO)	62.00 A
Rated Output Power (Low Overload LO)	37.00 kW (50.00 hp)
Rated Output Power (High Overload HO)	30.00 kW (40.00 hp)
Rated Output Current (Low Overload LO)	75.00 A
Rated Output Current (High Overload HO)	60.00 A
Max. Output Current	120.00 A
Output Frequency (V/f control)	0 - 550 Hz
Output Frequency (Vector control)	0 - 200 Hz
Pulse Frequency	4 kHz
Power Factor (λ)	0.95
Efficiency (η)	0.98
Power Loss	1.01 kW
Degree of Protection	IP20 / UL open type
Cooling	Internal air cooling
Operating Temperature (LO)	-20 to 40 °C (-4 to 104 °F)
Operating Temperature (HO)	-20 to 50 °C (-4 to 122 °F)
Relative Humidity (Operation)	Max. 95 % RH, non-condensing
Installation Altitude	1,000 m (3,280.84 ft)
Physical Weight (kg)	18.3
Dimensions L x W x H (cm)	49.5 x 35.6 x 30

Industrial Applications

1. Conveyor Systems in Manufacturing

This power module can precisely control the speed of AC induction motors driving conveyor belts in automated manufacturing lines, facilitating flexible production and material flow.

Problem Solved

Enables variable speed operation for different product types or production rates, improving efficiency, reducing wear on mechanical components, and providing accurate positioning. The 37kW output handles substantial loads, and the 0-550Hz output frequency allows fine-tuned speed adjustments for optimal throughput.

Variable speed driveAC motor controlMaterial handlingProcess automationEnergy efficiencyAutomated assembly

2. Pump and Fan Applications in HVAC Systems

Ideal for controlling large pumps and fans in industrial heating, ventilation, and air conditioning (HVAC) systems, enabling demand-oriented operation.

Problem Solved

Provides significant energy savings by matching pump/fan speed to the actual demand, rather than running at constant full speed, thus reducing power consumption and operational costs. The Low Overload (LO) rating (37kW, 70A) is well-suited for typical fan/pump loads, and its IP20 rating is appropriate for installation within electrical control cabinets common in HVAC infrastructure.

HVACVariable Frequency Drive (VFD)Centrifugal pumpsAxial fansEnergy optimizationFlow controlBuilding automation

3. Machine Tool Spindle Control

Suitable for controlling the main spindle motors of machine tools (e.g., lathes, milling machines) that demand precise speed and torque regulation for machining processes.

Problem Solved

Achieves high accuracy and repeatability in machining operations by providing a wide output frequency range (0-550Hz) and robust overload capabilities (High Overload: 30kW, 60A, 150% for 57s; 200% for 3s) essential for handling dynamic cutting forces and rapid acceleration/deceleration during complex tooling paths.

Machine toolsSpindle driveVector controlTorque controlCNC machiningPrecision manufacturingDynamic performance