How to choose and use Siemens SINAMICS G120 inverter

SINAMICS is a new generation of Siemens variable frequency drive platform, including three series of products: V series

Column, G series and S series. V series provide products for motion/servo control; G series are general-purpose inverters and can be used for general speed control occasions; S series are high-end inverters, which can be used for speed control or motion/servo control .

SINAMICS G series include G120 and G150, today we will talk about G120 series inverters in this article

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

SINAMICS G120 frequency converter is composed of control unit (Control Unit) and power module (Power module).

The Control Unit is used to control and monitor the motor connected to it. There are many types of control units, which can communicate with the upper-level controller (PLC) through different field buses (such as: Modubus-RTU, ProfibusDP, ProfiNet, DeviceNet, etc.);

Power module (Power module) is used to provide electrical energy for the motor and control module to realize the rectification and inverter function of electrical energy. The nameplate has technical data such as rated voltage and rated current.

The picture below is the appearance of the G120 power module and control unit:

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

The control unit of G120 includes CU230 series, CU240 series and CU250 series. We Take CU240E-2PN as an example to introduce the naming rules of the control unit:

CU: Abbreviation of Control Unit, which means [Control Unit];

240: serial number;

E: Economical type; other types include: B (basic type), S (advanced type), T (craft type), P (fan and water pump type).

2: indicates the SINAMICS development platform; if there is no "2" in the name, it indicates the MicroMaster development platform;

PN: Support ProfiNet bus; other types include: HVAC (USS, Modbus-RTU), DP (Profbus-DP bus), IP (Ethernet-IP protocol),

DEV (DeviceNet bus), CAN (CANopen protocol);

If the control unit integrates fail-safe functions, an "F" will be added to the name, for example: CU240E-2PN-F. The picture below is the appearance of the front panel of CU240E-2PN:

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

The control unit can be equipped with two different operation panels: BOP and IOP. BOP is the abbreviation of "BasicOperator Panel" in English, and the Chinese translation is "Basic Operation Panel". The BOP has a small LCD screen to display information such as parameters and diagnostic data; there are "auto/manual" and "confirm/exit" buttons at the bottom of the panel, which can be used to set the parameters of the inverter and perform simple functions test. The appearance of the BOP-2 panel is as follows:

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

IOP is the abbreviation of "Intelligent Operator Panel" in English, and the Chinese translation is "Intelligent Operator Panel". The LCD screen of IOP is larger than that of BOP. It adopts text and graphic display. The interface provides parameter setting, debugging guide, diagnosis and upload/download functions, which is helpful for intuitive operation and diagnosis of the inverter; IOP can be directly clamped to the inverter It can be connected to the inverter through a cable as a handheld unit, and the function can be selected through the manual/auto button and the menu navigation button on the panel. The operation is simple and convenient. The appearance of IOP-2 is as follows:

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

The Power Module of SINAMICS G120 includes PM230, PM240 and PM250.

Power modules can be divided into different size types according to their power: numbering from FSA to FSF. Among them, FS stands for "Frame Size", that is, "module size", and A to F represent the size of power (incremental order).

The protection grade of PM230 is IP20, including two types without filter and with integrated Class A power filter. Its dimensions are as follows:

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

PM230 also has a module with a protection level of IP54/55, which is suitable for fans and pumps. Its appearance is shown in the figure below:

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

PM240 has two types: PM240-2 and PM240P-2. PM 240-2 includes two different types without filter and with integrated Class A power filter. PM240-2 can realize braking through an external braking module; PM240P-2 is suitable for fans and water pump loads. The different types are shown in the following table:

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

PM250 has two types, without power filter and with integrated A-level power filter, with power feedback module, which can feed the energy generated by braking back to the grid. The size types are shown in the table below:

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

Okay, let’s talk about Siemens SINAMICS G120 inverter first.