#154 - Commissioning a Danfoss FC302 Variable Frequency Drive

Danfoss FC302 variable frequency drives (VFD) can be used in a variety of applications, such as pumps, conveyors, agitators. They can be set-up in different control modes, such as speed, position, torque.

#149 - Chat with Gerson Felipe

 (English version at the bottom)

Tive o prazer de bater um papo com Gerson Felipe, técnico em eletrotécnica e informática e coordenador de engenharia elétrica, instrumentação e automação. Conversamos sobre a sua trajetória profissional e as suas experiências trabalhando no setor de manutenção industrial em diversos setores, mas especialmente em açúcar e etanol.

#138 - Sinamics G120 comparison Control Modes (U/f, Vector encoderless, Vector with encoder)

Source: [1] Serial hoisting equipment with SINAMICS G120

#137 - G120 CU250S-2 Activating License for BasicPos

 > Procedure to Create a License and Insert in p9920 and activate on p9921

#134 - TIA Portal Safety Programming Blocks tips and examples

It is recommended that the Safety Program follows a set of guidelines in order to ensure it properly works. Here below some of the points to remind when programming a Safety PLC:

Tips:

> Isolate the Access to the Safety Program via DBs (optimized block access), such as DataFromSafety and DataToSafety.

Source [1]

#132 - Siemens Safety PLC hardware configuration and wiring of EStop, SFDoor, FDBACK, SENDDP, RCVDP and Frequency Converter G120C

Wiring, Configuring Hardware and Tags of Emergency Stop, Safety Door and Frequency Converter G120C in TIA Portal:

#130 - Sizing Motor Protection Circuit Breakers and Motor Contactors

Example of Motor branch circuit with Motor Protection Circuit Breaker, Motor Contactor and wiring sizing selection :

Motor: 380V AC, 3Ph, 1.5kW (2hp), FLA 4A, SF 1.15

Functions:

> Disconnection > Branch circuit short-circuit protection > Motor control > Motor overload protection

#123 - Speed control analysis with Sinamics G120 VFD in TIA Portal

There are different ways to program a speed control application with Sinamics G120 VFDs in TIA Portal. Here below a brief comparison between two methods that are commonly used: SINA_SPEED Function Block vs. Technology Objects.

#120 - Link to Download Data and Documents from SEW's website

Link to Download Data and Documents (e.g. manuals, sample projects, GSDML files) from SEW's website.

#118 - Chat with Diego Moreira [Part 2]

(English version at the bottom)

Na última terça-feira 12 de Outubro, tive o prazer de bater um papo com meu amigo Diego Moreira, especialista técnico em acionamentos elétricos que possui uma sólida bagagem em inversores de frequência. Diego trabalha com clientes de diversas indústrias, auxiliando setores como mineração, açúcar e álcool. O foco da nossa conversa foi sobre dicas práticas para comissionamento e monitoramento de inversores de frequência e sistemas de acionamento. 

#117 - What to do when something goes wrong with your sinamics drives G120 / G120C / S120

Sometimes when configuring or commissioning frequency converters or servo drives, such as the sinamics G120 / G120C / S120, things go wrong. Here below a summarized list of ideas to help troubleshooting :

#110 - Chat with Diego Moreira

(English version at the bottom)

Tive o prazer de bater um papo com Diego Moreira, especialista técnico em acionamentos elétricos que possui uma sólida bagagem em inversores de frequência. Conversamos sobre a sua trajetória profissional nesse campo extremamente importante para as indústrias, bem como alguns episódios da sua carreira.

#37 - Rockwell program with Servo Motor

In the previous post,  we configured two virtual servo motor axes to simulate one axis in rotation and the other in translation. In this post we will make a program with two rotating axes in RSLogix5000 and use the available Motion Control commands. As we are using axes whose Data Type is VIRTUAL_AXIS, with no real hardware present, the available commands are limited. Virtual axes can be used in a project for several purposes, such as synchronizing axes, multiplying input and output ratios (virtual gear box) and even to do virtual tracking of objects in applications in motion.

#35 - Rockwell Servo motor configuration

In this post we will configure and send commands to two servo motor axes using the simulator in RSLogix5000. One will be a rotating axis and the other will be a translating axis. 

#34 - Connecting to a NORD inverter with Nordcon

There are two ways to connect to a NORD inverter, which are via Ethernet or Serial. In this post we will show you how to make this connection via Ethernet, read the parameters of the Inverter and edit the parameters Online, make a backup / restore of the data of an Inverter and make a jog in manual.

#30 - Conecting to a SEW VFD with Movitools

In this post we will show you how to connect SEW frequency inverters and servo motors using the Movitools program. This can be useful, for example, to connect online to one of these modules and check or edit parameters, see any faults that have occurred that are registered in the device's memory, make a backup or restore, perform a manual jog, among others.

#24 - Braking resistor in a VFD

There are several possible motor / variable frequency drives (VFD) configurations. One of the important parameters is in relation to the type of brake and we will comment on some points in this post. The motors can be mounted with or without a brake (usually installed near the fan at the rear of the motor and the drive shaft ) and with or without an external brake resistor to dissipate the motor energy during braking. 

#20 - Connecting to a PowerFlex VFD with anaconda and CCW

A practical way to connect to a Rockwell VFD such as the PowerFlex family, is using the Allen-Bradley 1203-USB, also known as anaconda. Just plug the USB end into the laptop and the RJ-45 end into a VFD DSI (Device Serial Interface) input. Even if the physical connector is of the RJ-45 form, which is normally used for Ethernet connections, it is worth remembering that the protocol used in this communication is Serial.