Navigation
Rating 
Thanks 2
9 Entries
| 11/26/2014 3:10 PM | |
Joined: 3/20/2014 Last visit: 12/11/2022 Posts: 87 Rating:
|
Dear Hamid rad, I know these baisc parameters of motor. Thanks Regards, RSid |
| 11/26/2014 4:41 PM | |
|
Posts: 5225 Rating:
|
Hi there. What about looking at the over-torque alarming. I have not done this on Siemens drives yet, but on others. The idea is that if the default torque alarmings are not always set correctly. Maybe investigate setting the values within the actual work torque levels. Also.. Motor stopping at a very steep deceleration can also cause issues.. especially when carrying variable or high load. I would recommend using the S-curves used to smooth the ramping. Some application needs an external resistor as braking resistor to absorb the power.. unless it is a system of drives sharing a DC bus. I hope this is enough to chew on a bit.. but it might be info you already know. Feedback is welcome. Greetings. w |
This contribution was helpful to
|
|
| 12/13/2014 7:49 PM | |
|
Joined: 3/20/2014 Last visit: 12/11/2022 Posts: 87 Rating:
|
Dear, Actually i want to protect my motor and inverter but unfortunately it does not work as it would be. The Parameters which i used in Micro Master are as follow : At First I factory Set it by using, P0010 - 30 P0970 - 1 Then i assign Motor Parameters, P0304 P0305 P0307 P0308 P0310 P0311 And in the last i assign terminal assignment and frequency parameters, P0700 P0701 P1082 P2000 That's is all the parameters which i parameter only... Please guide how i save both the things.... Regards, RSid |
Last edited by: RSid at: 12/13/2014 7:51 PM |
|
| 12/14/2014 2:24 PM | |
Joined: 6/4/2008 Last visit: 8/5/2025 Posts: 1518 Rating:
|
Hi, you have not provided any information that is relevant to the issue. You state you are burning motors connected to VFD's (Micromasters) 1/. Are the motors Inverter Rated? It should clearly state on the data plate. 2/. Are you connecting the motors correctly (i.e. Star/Delta) and entering the related (Correct) motor data? 3/. Are you running the motors slowly <40% for long periods? (Any additional thermal protection) 4/. Do you use contactors in the load circuit? 5/. Do you have long motor cables (>100M) and if so, have you fitted output chokes? 6/. What is the general use (Application) of these motor/drive combinations? i.e. What is the load. 7/. P640 = ? (150% is mostly ok)
|
| 12/14/2014 3:03 PM | |
|
Joined: 3/20/2014 Last visit: 12/11/2022 Posts: 87 Rating:
|
Hi, 1. Yes motors are inverter rated. 2. Yes motors are connecting properly and the motor data is correctly defined by using parameters P0304 P0305 P0307 P0308 P0310 P0311 3. NO we are running motors at 75Hz. 4. Motors are directly connected with inverters. 5. No there is no long cables it's almost 50m in length and no choke was connected. 6. Load is impeller and it's working is tumbling towel. 7. P0640 = factory default value (Why 150% is almost ok) Regards, RSid |
| 12/14/2014 4:17 PM | |
Joined: 7/8/2009 Last visit: 6/7/2025 Posts: 1977 Rating:
|
Reason for motor burnt should be identified but before that - for protection you can use following settings so that drive will be tripped instantaneously above current limit set by you /tf/WW/en/Posts/93436 Regards, Devesh Vithani |
|
I dont Like people driving Fast, thats the reason I overtake them ;) |
|
This contribution was helpful to
|
|
| 12/16/2014 8:22 AM | |
Joined: 3/17/2013 Last visit: 4/28/2025 Posts: 481 Rating:
|
Hi What is the base frequency of motor P0310? At this speed what is the running load? Waht is the motor name plate full load? From your query I believe you set P1082= 75 Hz. What is the ruuning load at this speed? i mean is it still below the full load or not? Regards, Vijay |
Follow us on