Siemens SINAMICS V20 inverter serial (2)-terminal and wiring

In the previous article, we introduced the selection of Siemens SINAMICS V20 inverter. In today's article, we will introduce the terminal definition and wiring of V20.

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Let's first look at a front view of SINAMICSV20 (FSB):

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 upper end of the inverter is a terminal block for power input, including four terminals PE, L1, L2/N and L3. When using three-phase 400V power supply: PE is connected to the protective ground wire, L1, L2/N, L3 are respectively connected to three phase wires; when using single-phase 230V power supply: PE is connected to the protective ground wire; L1 is connected to the phase wire; L2/N is connected Neutral line; L3 is floating;

The lower end of the inverter is the motor wiring terminal block and the DC terminal block: PE is connected to the protective ground wire, U, V, and W are connected to the three terminals U1, V1 and W1 of the motor respectively; the motor should adopt star connection or delta connection What? This depends on the nameplate of the motor and the type of inverter.

The picture below is the nameplate of a motor:

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.

It can be seen from the nameplate:

1) When the power supply voltage is 230V, the motor windings need to be connected to form a triangle;

2) When the power supply voltage is 400V, the motor windings need to be connected in a star shape (Y-shape);

If a single-phase 230V inverter is used to control the motor, since the voltage between U, V, and W output by the inverter is 230V, the motor windings need to be changed to delta connection. As shown 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.

If a three-phase 400V inverter is used to control the motor, since the voltage between U, V, and W output by the inverter is 400V, it is necessary to change the motor windings to a star-shaped (Y-shaped) connection. As shown 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.

The DC terminal (DC+/DC-) is used to connect an external braking resistor.

The control terminals include digital input, digital output, analog input, analog output and RS485 communication interface. The layout of FSA to FSE 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 meaning of each terminal is 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.

The following picture is the wiring schematic diagram of the control circuit:

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 V20 also supports the use of expansion modules to expand the number of digital inputs (DI) and outputs (DO). The expansion module and wiring terminal are 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.

The lower left corner of the expansion module is the digital input terminal: DI5 and DI6 are input channels 5 and 6, DI C can be used to connect the DIC of the V20 itself (terminal 12) when connecting the DI C of the expansion module with the DI C of the inverter. When connected, the two can be used as the same set of digital inputs; when the DIC of the expansion module is not connected to the DIC of the inverter, they can be used as two sets of digital inputs.

The lower right corner of the expansion module is the digital output terminal. There are two sets of relay outputs DO3 and DO4, both of which are normally open channels.

The following picture shows the wiring schematic diagram of the expansion module:

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.

Well, the terminal definition and wiring schematic diagram of SINAMCIS V20 are introduced here first.