Sir I working on DC drives...I have some questions 1. What process happen in drive when we reduce field current 2. Why we does not generally consider emf feedback in case of rpm measurement even in base speed 3. What will happen if outer loop (tachofeedback) fails
we generally do not Consider armature voltage for speed feedback because when load increses armature requires more torque and drive increses the voltage as per requirement, at that time speed does not go up linearly.and there are fluctuations in armature current and voltage which creates problem in speed calculations.
Good evening sir Sir mujhe DCS800 drive ki motor tunning k bare mai batayenge sir......hamre motor ka speed refrence tacho se hai.sir plz clear my point
Sir I want to Learn communication between different brand plc to drive. Eg- Simens PLC to parker drive ,simens drive to schneider plc, etc Would u help me please ?????
Sir pranam mere plant me DC drive लगी है और मैं अभी नया joining किया हू तो मुझे सर DC drive k bare me पूछना है और मैं plc scada AUR DC drive सीखना चाहता हु please help कीजिए सर
If field current on motor is written like 9.0/2.6 or 11/1.8 ,means field current range is from max to min then you can week the field its possible in separately and shunt motor.most of yhe separately exited motors are designed for Field weakening..
Pot connect karne se pehle Analog input k parameters set karne padte hain Jis analog input terminal pe pot connect hai usko 0-10 vdc set karna padta hai.max and minimum value of input and kuchh jumpers bhi hote hain unko bhi user manual dekh k set karna padta hai.
Sir, How two drives shares equal torque. I have seen in one simoreg drive one motor was showing negative current on analogue meter. Is it possible in thyristors
drive can calculate it by armature voltage feedback or you can use tacho/encoder.for theoretical calculations if field current is constant at full rated amp motor rapm will be proportional to armature dc voltage