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MICROMASTER

Speed referance

Thread Starter: Algudkar   Started: 8/11/2012 12:43 AM   Replies: 2

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  8/11/2012, 12:43 AM
Algudkar
Joined 7/25/2009
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Hi experts and friends
here is MM440 VFD the alarm fault is F0070 once on command is given the fault is comming.
the VFD having the profibus communication.i tryed to acknowledge but its not resetted finaly i made
P2040 = 0. before its P2040=20.now on command is given drive will get on without fault F0070.but motor is not running. i checked P1000=6(speed referance) is there.can  help me
regards
Algudkar sh..

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  8/11/2012, 7:57 AM
Ayman Elotaify
Joined 5/28/2008
Last visit: 5/22/2013
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algudkar wrote:
Hi experts and friends
here is MM440 VFD the alarm fault is F0070 once on command is given the fault is comming.
the VFD having the profibus communication.i tryed to acknowledge but its not resetted finaly i made
P2040 = 0. before its P2040=20.now on command is given drive will get on without fault F0070.but motor is not running. i checked P1000=6(speed referance) is there.can  help me
Hello,
  1. F0070 means:
    CB setpoint fault STOP II
    Cause:     No setpoint values from CB (communication board) during telegram off time
    Diagnosis & Remedy: Check CB and communication partner
  2. Changing P2040  is not the soltution. It is only change the time after which F0070 will be triggered.
    P2040: Defines time after which a fault will be generated (F0070) if no telegram is received via the link. And keep in mind that setting P2040 = 0 means that you want to disable watchdog.
  3. So now it looks like there is a problem in the sent telegram. Which telegram you are working with in your case? And what are seetings of each bit in the control word? 
  4. Did you have a look on this link:
    MICROMASTER 4 & SINAMICS G120: Function block (FC14) to control an MM4 via Profibus-DP
Hope this helps.
Ayman Elotaify
MISC Egypt
www.miscegypt.com
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  8/12/2012, 8:18 PM
Vithani
Joined 7/8/2009
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algudkar wrote:
Hi experts and friends
here is MM440 VFD the alarm fault is F0070 once on command is given the fault is comming.
the VFD having the profibus communication.i tryed to acknowledge but its not resetted finaly i made
P2040 = 0. before its P2040=20.now on command is given drive will get on without fault F0070.but motor is not running. i checked P1000=6(speed referance) is there.can  help me


It seems your drive has lost profibus communication. Most probably its a cable or Connector. Just to check, what is LED color on Profibus Module. I guess it is Orange, and if it is, then you must check all cables.

Recently, I faced one problem, in which, I was losing communication for almost 100 drives at same time and problem was small cable between two drives. In my case, I was able to reset fault and able to get drive online on PLC if I go one by one on each drive. But as soon as I give start command, all 100 drives were showing communication fault

So I recommend you to check cables, connectors, everything which can affect communication

Regards,
Devesh vithani
Please say Thanks if your Problem is Solved.. :-)
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