Technical Overview

Compact 1.5kW VFD for 380-480V AC motors with vector control, PROFIBUS DP, and integrated Safe Torque Off. IP20 rated.

Key Features

Delivers high performance with a maximum output frequency of 550 Hz.
Integrates PROFIBUS DP communication for seamless connectivity.
Features sensorless vector control enhancing operational efficiency.
Supports overload capability for reliable performance under varying loads (LO: 150% for 3s, 110% for 57s; HO: 200% for 3s, 150% for 57s).
Maintains an IP20 rating for protection against dust and moisture.
Compact design with dimensions of 173mm (H) x 73mm (W) x 155mm (D).
Integrated Safe Torque Off (STO) safety function.
Operates with 3-phase input of 380-480V AC and output rated power of 1.5 kW.

Technical Specification Matrix

Parameter	Value
Input Voltage	3 AC, 380-480 V (+10% / -20%)
Line Frequency	47-63 Hz
Rated Current (Low Overload - LO)	5.50 A
Rated Current (High Overload - HO)	4.50 A
Output Voltage	3 AC, 400V IEC, 480V NEC
Rated Power (Low Overload - LO)	1.50 kW (2.00 hp)
Rated Power (High Overload - HO)	1.10 kW (1.50 hp)
Output Current (Low Overload - LO)	4.10 A
Output Current (High Overload - HO)	3.10 A
Max. Output Current	6.20 A
Pulse Frequency	4 kHz
Output Frequency (Vector Control)	0-240 Hz
Output Frequency (V/f Control)	0-550 Hz
Overload Capability (LO)	150% base load current IL for 3 s, followed by 110% base load current IL for 57 s in a 300 s cycle time.
Overload Capability (HO)	200% base load current IH for 3 s, followed by 150% base load current IH for 57 s in a 300 s cycle time.
Power Factor λ	0.70-0.85
Offset Factor cos φ	0.95
Efficiency η	0.97
Sound Pressure Level (1m)	49 dB
Power Loss	60.3 W
Filter Class (integrated)	Unfiltered
Communication Interface	PROFIBUS DP
Standard Digital Inputs	6
Digital Input Switching Level (0→1)	11 V
Digital Input Switching Level (1→0)	5 V
Max. Inrush Current (Digital Inputs)	15 mA
Fail-safe Digital Inputs	1
Digital Outputs (Relay Changeover Contact)	1 (DC 30 V, 0.5 A)
Digital Outputs (Transistor)	1 (DC 30 V, 0.5 A)
Analog / Digital Inputs	1 (Differential input)
Analog Input Resolution	10 bit
Analog Input Switching Threshold (Digital Input 0→1)	4 V
Analog Input Switching Threshold (Digital Input 1→0)	1.6 V
Analog Outputs	1 (Non-isolated output)
PTC/KTY Interface	1 motor temperature sensor input
Safety Feature	Safe Torque Off (STO) integrated
Protection Class	IP20 / UL OPEN TYPE
Cooling	Forced cooling (1 fan)
Physical Weight (kg)	1.1
Dimensions L x W x H (cm)	22.5 x 27 x 8.5

Industrial Applications

1. Conveyor Belt Systems in Manufacturing

This drive precisely controls the speed of conveyor belts, ensuring smooth material flow and reducing wear and tear. Its overload capabilities handle momentary jams without tripping, while PROFIBUS DP enables seamless integration with factory automation. The Safe Torque Off (STO) feature is vital for operator safety during maintenance or emergency stops.

Problem Solved

Inconsistent conveyor speeds, inefficient material handling, and safety concerns during operation and maintenance.

Variable Speed ControlOverload ProtectionPROFIBUS DPSafe Torque Off (STO)Industrial Automation

2. Pump and Fan Control in HVAC Systems

Ideal for optimizing the performance of pumps and fans in HVAC systems by precisely controlling motor speed (0-550 Hz V/f control). This leads to significant energy savings (efficiency 0.97) by matching fluid/air flow to demand. The compact size allows for installation in space-constrained mechanical rooms, and PROFIBUS DP facilitates integration with Building Management Systems.

Problem Solved

High energy consumption in HVAC systems due to fixed-speed pumps/fans, lack of precise flow/pressure control, and limited installation space for controls.

Energy EfficiencyVariable Frequency DriveHVAC ControlPROFIBUS DPCompact Size

3. Small Machine Tool Spindle Control

Suitable for controlling small machine tool spindles (e.g., for drilling, milling light materials) where precise speed (0-550 Hz output frequency) and torque control (vector control) are critical for machining accuracy and surface finish. The digital and analog I/O allow for versatile integration with machine sensors and control panels, and the STO function enhances operator safety.

Problem Solved

Inaccurate machining due to inconsistent spindle speeds, lack of precise torque control, and safety requirements for machine tool operations.

Spindle ControlVector ControlDigital I/OAnalog I/OSafe Torque Off (STO)

Siemens SINAMICS G120C 1.5kW Compact Inverter Drive

Siemens SINAMICS G120C 1.5kW Compact Inverter Drive

Technical Overview

Key Features

Technical Specification Matrix

Industrial Applications

1. Conveyor Belt Systems in Manufacturing

2. Pump and Fan Control in HVAC Systems

3. Small Machine Tool Spindle Control