HI All

I work within Hazardous areas and automotive industries. Total beginner with PLC's. We use Siemens S7 and TIA Portal at work. I want to het the most out of my subscription, what is the best way to use Real Pars, can I get a copy of the Siemens programme to be able to practise what I learn???

Hi Antony,

Thanks for your comment!

Great to hear your motivation and eagerness to get the most out of your subscription!

To answer your question, our course library is specifically designed in a way where it provides all the tools needed for beginners to evolve into an advanced level through our hands-on courses. Therefore, we always advise starting with course video number 1 and making your way up from there.
If you click on "browse" you will have a great overview of all the course numbers.

You can also very easily purchase the STEP7 software over here https://bit.ly/2l4YjWD

Hope this answers your question sufficiently. If you have any other questions or would like any further assistance, feel free to reach back out! 

Happy learning!

Hi

I Work in Oil & Gas Company,

I have a soft starter brand:
ABB PSTB370-600-70

Connected to Motor ABB 160KW- 291A- 3ph- Delta Connection -

Our Problem is : Motor Take High Current in Starting Reach 1200 A

I need to make starting Current Low as possible

which Function i should change in the soft starter setting

Below are Soft Starter Setting:

Ie = 291 A

Start Ramp = 8 Sec

Initial Voltage =50%

Current Limit = 4.5 x Ie

Phase Imb Level = 60%

High I =Yes

Your configuration allows 4.5x Ie as the starting current limit. If you are tripping on high starting current of >1200A, then you likely have a very large starting torque requirement or a locked rotor. Are you starting with a high connected load? Does the motor start to turn when the start command is given? If you disconnect the motor coupling, can you spin the motor by hand? If not, the motor may be mechanically locked or bound.

I would three things. First, verify the nameplate data on the motor to insure you have the motor you think you do. Sounds silly, but I have seen it happen many times. Also make sure that the motor is properly sized for the load. This happens a lot on new installations where the assumed load size calculated by the engineering company is not what is reality in the field.

Second, put a clamp-on ammeter on one phase of the output power to the motor with the "max current value" capture feature on, if available. Verify that you are really sending 1200A through the circuit (400A per phase) when the motor starts.

Second, set the Phase Imb Level to max (8o%) and the start ramp to 30 seconds to see what happens.

Lastly. this may be one of those rare instances you will need to install a larger soft starter (larger kW capacity).

Thank you for your response. 30 seconds should be fine for the motor. A large motor like this one should not b started more than a couple of times in a 15-minute period, so I would not be worried about over-heating.

Imb Level is the tolerance allowed for an imbalance between phases. It really should not have to be changed, but the default is normally 80%.

Ramp time is the time over which the voltage will be ramped from 0 to the line voltage. With a large load like a compressor, 30 seconds should a suitable time period, assuming the compressor does not require excessive torque to start rotation.

Current limitation is the amount of current allowed to pass to the motor from the starter. The value must be large enough to get the motor to turn (develop the required torgue). You can certainly try the lower value of 2 x Ie to see if it can give you the performance you need.

I just started this course, what is the first video and the first thing to d. It showed me program SIEMENS HMI in Wincc, I just wanna make sure i am in the right path. and also, do i need to download the app to progran or not yet?

Hello Real Pars

Joined to review and upgrade my skill set with Siemens controllers. I have to say the content is great. It The content is clear and concise and trustworthy. Excellent

Thank You
Chris

Hello,

i need to purchase and install a new Humidity sensor to read humidity in room in a factory,
and connect it with PLC,
i need a humidity sensor give me 4-20mA signal to connect it with PLC

1/ can you give me a brief a bout humidity sensor and how i connect it with PLC

2/ can i connect a humidity sensor with a PID Controller to give me the reading signal by any communication protocol then transfer it to PLC???

3/ Also i need to purchase and connect Temperature sensor in the same room, and take the 4-20 mA signal to PLC.
4/ Can i connect temperature sensor directly to PLC or I need a PID Controller to take the reading signal 4-20 mA and connect it to PLC. Or by communication

Summary:
All i need is install a humidity sensor and temperature sensor , and get the reading signal 4-20mA to PLC as input (Input through analog signal or by communication between PID Controller and PLC and it is better)

Best Regards
Your Urgent response is highly appreciated

Humidity and Temperature sensors and transmitters come in many different styles and enclosure types. Each has to be specified for the specific purpose, range, connection type, etc. In general, for HVAC applications, Kele is a good vendor for humidity sensors and transmitters, and Dwyer is a good vendor for temperature instruments for HVAC. A 4-20ma loop is easy to connect to a PLC: the (+) side of the transmitter is wired to the (+) terminal of the analog input card, and the (-) side of the transmitter is connected to the (-) terminal of the PLC card.

Dear all

I need to buy a Simple UPS , to connect it with Air Condition Split Unit ,

Below are Air Condition Specification from Nam plate:
Brand : LG
LG Model Number : HS-C1865NA6
Type: Split Unit AC
voltage: 220 v ac -single phase
18000 BTU/h,
Input Power =1900w (Max = 2465 w)
Current = 9.7 A (Max = 11.5 A)

my Questions are:
1/ What is the starting current of this unit?
2/ what is the INVERTER Capacity i need to operate this AC unit ? (How many KW of the inverter)??

your valuable feedback is highly appreciated