Answer / hmt

convert the analog signal to digital signal using A/D
converter and give the resultant to PLC data lines

Answer / guest

You are right Hmt,but you are giving the digital signal only
read the question carefully

Digital Signal :- for this purpose use zero speed controller
to measure the 0-1400RPM.
in this controller there is one delay & one instant contact
The proximity switch sense 0-200RPM speed gives signal to
Controller ,controller gives the instant relay contact to
PLC as Digital signal as Motor is Runing if motor reach to
the statable speed with the time period the controller give
the delay contact to PLC as digital signal.

Analog Signal:- For the purpose use encoder inside the motor
shaft with give conitious pulse with every roation in the
form of (4-20mA & 0-10v)with respective to )-1400RPM or
whatever speed we configure to PLC as Analog Signal

What is the difference between AMF panel and DG Synchronization panel? please define the working of both the panels?

3 Answers   ABB, Power Grid,

---

Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha

0 Answers  

---

what material is used in capaciter

0 Answers  

---

in 33KV or 66KV system which connection is aviable on high voltage transformer primary delta or star ?

3 Answers  

---

What is the problem of internal failure in ship engine telegraph system norcontrol?

0 Answers   SAR,

---

Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

3 Answers  

---

which motors is used in mixies

3 Answers  

---

Where there is voltage,there must be current.Is this right or wrong??

10 Answers  

---

What is corona loss?

2 Answers   PWD,

---

what are the different sizes of U.G. cable & where these cabl;es are used according to voltage ..

0 Answers   HPCL,

---

What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?

0 Answers   ABC, ACB,

---

We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

0 Answers  

---