Siemens SINAMICS G120XA Low-Voltage Converter, 15 kW

USD 566.29

15 kW 3-phase AC low-voltage converter featuring 380-440V input, 0-550Hz V/f control, IP20 protection, and integrated fan cooling for precise motor operation.

SKU Siemens-6SL3220-1YD28-0UB0 Category
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Siemens SINAMICS G120XA Low-Voltage Converter, 15 kW

Model Identifier SINAMICS G120XA
Official Part Number 6SL3220-1YD28-0UB0
GTIN Standard 4042948679562

Technical Overview

15 kW 3-phase AC low-voltage converter featuring 380-440V input, 0-550Hz V/f control, IP20 protection, and integrated fan cooling for precise motor operation.

Key Features

  • 3-phase AC input (380-440 V, 47-63 Hz)
  • 15.00 kW rated power at 400V
  • Integrated air cooling system with fan
  • IP20 / UL open type degree of protection
  • Supports V/f linear/square-law, V/f with flux current control (FCC), and sensorless vector control
  • 6 standard digital inputs (11V/5V switching levels)
  • 4 relay changeover digital outputs (DC 30V, 1.0A)
  • 2 differential analog/digital inputs (12 bit resolution)
  • 2 non-isolated analog outputs
  • PTC/KTY interface for motor temperature monitoring (PTC, KTY, PT1000)
  • Communication via USS, Modbus RTU, BACnet MS/TP
  • Low Overload (LO) capability: 110% base load current for 60s in a 600s cycle time
  • IE2 efficiency class
  • Ambient operating temperature range: -20 to 60 °C

15.00 kW (400V) rated power, 3-phase AC input with extensive control techniques, including V/f FCC and sensorless vector control.

Technical Specification Matrix

ParameterValue
Input Number of phases3 AC
Input Line voltage380 ... 440 V +10%-20%
Input Line frequency47 ... 63 Hz
Input Rated current (LO)28.50 A
Output Number of phases3 AC
Output Rated voltage400 V
Output Rated power IEC 400V (LO)15.00 kW
Output Rated current 400V (IN)31.00 A
Output Rated current 380V (IN)31.00 A
Output Rated current (LO)31.00 A
Output Max. output current34.10 A
Output Pulse frequency4 kHz
Output frequency for vector control0 ... 240 Hz
Output frequency for V/f control0 ... 550 Hz
Overload capability Low Overload (LO)110% base load current IL for 60 s in a 600 s cycle time
Standard digital inputs Number6
Standard digital inputs Switching level: 0 → 111 V
Standard digital inputs Switching level: 1 → 05 V
Standard digital inputs Max. inrush current15 mA
Fail-safe digital inputs Number0
Digital outputs Number as relay changeover contact4
Digital outputs Output (resistive load)DC 30 V, 1.0 A
Digital outputs Number as transistor0
Analog / digital inputs Number2 (Differential input)
Analog / digital inputs Resolution12 bit
Switching threshold as digital input 0→14 V
Switching threshold as digital input 1→01.6 V
Analog outputs Number2 (Non-isolated output)
PTC/KTY interface1 motor temperature sensor input, sensors that can be connected: PTC, KTY, PT1000 and Thermo-Click, accuracy ±5 °C
Power factor λ0.75 ... 0.93
Power factor cos φ 10.99
Efficiency η0.98
Sound pressure level (1m)67 dB
Power loss0.422 kW
Filter class (integrated)Unfiltered
EMC category (with accessories)without
Safety function "Safe Torque Off"without SIRIUS device (e.g. via S7-1500F)
CommunicationUSS, Modbus RTU, BACnet MS/TP
Standard board coating typeClass 3C2, according to IEC 60721-3-3: 2002
CoolingAir cooling using an integrated fan
Cooling air requirement0.018 m³/s (0.653 ft³/s)
Installation altitude1,000 m (3,280.84 ft)
Ambient temperature Operation-20 ... 60 °C (-4 ... 140 °F)
Ambient temperature Transport-40 ... 70 °C (-40 ... 158 °F)
Ambient temperature Storage-40 ... 70 °C (-40 ... 158 °F)
Relative humidity Max. operation95% At 40 °C (104 °F), condensation and icing not permissible
Signal cable Conductor cross-section0.15 ... 1.50 mm² (AWG 24 ... AWG 16)
Line side Versionscrew-type terminal
Line side Conductor cross-section1.50 ... 16.00 mm² (AWG 16... AWG 6)
Motor end VersionScrew-type terminals
Motor end Conductor cross-section1.50 ... 16.00 mm² (AWG 16 ... AWG 6)
PE connectionOn housing with M4 screw
Max. motor cable length Shielded150 m (492.13 ft)
Max. motor cable length Unshielded300 m (984.25 ft)
Degree of protectionIP20 / UL open type
Frame sizeFSC
Compliance with standardsCE, EAC, RCM, ROHS II
CE markingEMC Directive 2004/108/EC, Low-Voltage Directive 2006/95/EC
Converter losses to IEC61800-9-2* Efficiency classIE2
Physical Weight (kg)7
Dimensions L x W x H (cm)20.9 x 14 x 29.5

Industrial Applications

1. Conveyor Belt Systems with Variable Speed Requirements

The SINAMICS G120XA drive can precisely control the speed of motors driving conveyor belts in manufacturing or logistics facilities. Its V/f control up to 550 Hz and sensorless vector control ensure smooth acceleration and deceleration, preventing product damage and optimizing material flow.

Problem Solved

Inconsistent material handling speeds leading to bottlenecks or product damage. The drive provides precise speed control and torque management, enhancing throughput and safety.

Variable speed driveconveyor automationmaterial handlingV/f controlsensorless vector control

2. Industrial Pump and Fan Control for HVAC Systems

This drive is ideal for regulating the speed of pumps and fans in large-scale HVAC systems or industrial fluid transfer applications. Its 15.00 kW rated power and efficiency of 0.98, coupled with overload capabilities, ensure stable and energy-efficient operation for critical infrastructure.

Problem Solved

High energy consumption and inefficient operation of fixed-speed pumps and fans. The variable frequency drive optimizes energy usage by matching motor speed to demand, reducing wear and tear.

HVACpump controlfan controlenergy efficiencyvariable frequency drivefluid transfer

3. Machine Tool Spindle Control in Manufacturing

The G120XA can manage the spindle speed of various machine tools, such as lathes, mills, or grinding machines. Its high output frequency (up to 550 Hz for V/f) and precise control capabilities enable fine-tuned machining operations, improving product quality and operational flexibility.

Problem Solved

Achieving precise and variable spindle speeds required for diverse machining tasks. The drive's vector control and resolution capabilities allow for accurate speed and torque adjustments, critical for precision manufacturing.

Spindle controlmachine toolsprecision machiningmanufacturing automationvector control
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