Siemens SINAMICS PM240-2 Power Module 0.55kW

Technical Overview

3-phase power module with 380-480V AC input, 0.55kW (LO) / 0.37kW (HO) output, integrated braking chopper, IP20 protection.

Key Features

3-phase input voltage range: 380-480 V AC, ±10%
Line frequency: 47-63 Hz
Rated power (Low Overload): 0.55 kW (0.75 hp)
Rated power (High Overload): 0.37 kW (0.50 hp)
Output frequency for V/f control: 0-550 Hz
Output frequency for vector control: 0-200 Hz
Degree of protection: IP20 / UL open type
Cooling: Internal air cooling
Ambient temperature (Operation LO): -10 to 40 °C
Ambient temperature (Operation HO): -10 to 50 °C
Plug-in screw terminals for connections
Efficiency: 96%

Technical Specification Matrix

Parameter	Value
Input Voltage (3-Phase AC)	380-480 V ±10%
Line Frequency	47-63 Hz
Rated Power (LO)	0.55 kW (0.75 hp)
Rated Power (HO)	0.37 kW (0.50 hp)
Rated Current (LO)	1.70 A
Rated Current (HO)	1.30 A
Max. Output Current	2.60 A
Output Frequency (V/f Control)	0-550 Hz
Output Frequency (Vector Control)	0-200 Hz
Pulse Frequency	4 kHz
Degree of Protection	IP20 / UL open type
Cooling	Internal air cooling
Ambient Temperature (Operation LO)	-10 to 40 °C
Ambient Temperature (Operation HO)	-10 to 50 °C
Relative Humidity (Max. Operation)	95 % RH, non-condensing
Efficiency	0.96 (96%)
Power Factor λ	0.85
Overload Capability (LO)	110% for 57s, 150% for 3s (300s cycle time)
Overload Capability (HO)	150% for 57s, 200% for 3s (300s cycle time)
Conductor Cross-section (Line side)	1.00 - 2.50 mm² (AWG 18)
Physical Weight (kg)	1.38
Dimensions L x W x H (cm)	18.5 x 9 x 28

Industrial Applications

1. Small Conveyor Belt Systems with Dynamic Braking

This power module is ideal for controlling small conveyor belt motors requiring precise speed adjustments and frequent starts/stops. The integrated braking chopper efficiently dissipates regenerative energy, preventing overvoltage in applications where the motor acts as a generator during deceleration or lowering loads. Its 0.55 kW (LO) rated power and 380-480V input are suitable for common industrial conveyor setups.

Problem Solved

Ensures controlled deceleration and stops on conveyor systems, preventing damage from regenerative energy spikes and allowing for dynamic operation without external braking resistors in many cases.

Variable Speed DriveRegenerative BrakingConveyor ControlIntegrated Braking Chopper0.55 kW Motor Control

2. Pump and Fan Speed Regulation in HVAC Systems

The ability to control output frequency from 0-550 Hz (V/f control) and operate with 3-phase 380-480V input makes this module suitable for optimizing the speed of pumps and fans in HVAC (Heating, Ventilation, and Air Conditioning) systems. The IP20 rating allows for installation within protected electrical cabinets typical of building automation, enhancing energy efficiency by matching motor speed to demand.

Problem Solved

Provides energy-efficient control of HVAC pumps and fans, reducing power consumption by precisely adjusting flow and air volume instead of relying on mechanical throttling, and offers robust operation within typical industrial panel environments due to its IP20 rating.

HVAC ControlPump ControlFan Speed ControlEnergy EfficiencyV/f ControlIP20 Enclosure

3. Industrial Mixing Equipment with Intermittent Heavy Loads

For industrial mixers that experience intermittent heavy loads or rapid changes in viscosity, the module's high overload capability (150% for 57s, 200% for 3s for HO) coupled with its 0.37 kW (HO) rated power ensures reliable operation. The 380-480V input and 4 kHz pulse frequency provide stable motor control, preventing stalling and optimizing mixing processes under varying conditions.

Problem Solved

Maintains consistent operation of industrial mixers under fluctuating load conditions, preventing motor stalling during peak demand and allowing for quick, efficient mixing cycles due to robust overload protection and precise motor control.

Motor Overload ProtectionIndustrial Mixer ControlDynamic Load HandlingFrequency InverterProcess Control