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MICROMASTER

Drive is Not statring in Load

Thread Starter: SATISH CHOWDARY   Started: 9/1/2012 10:38 AM   Replies: 3

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  9/1/2012, 10:38 AM
SATISH CHOWDARY
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Dear all,
  I have 75 KW MM 440 drive it was running with out load but when drive started with  load it was dispalaying alarm A 502(Current limit) and motor not running.

Plz anyone give me the solution

Satish



=== Edited by SATISH CHOWDARY @ 9/11/2012 8:27 AM [GMT ] ===
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  9/2/2012, 8:05 AM
Jurik
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I understand that you need an auto-reset option. P 1210 defines the source auto reset. P 1211 specifies the number of auto reset.
If I understand you correctly, this should help.
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  9/11/2012, 10:42 AM
tractor
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Check the configuration and motor tuning; if this is correct, observe the current during start up to ensure it is not rising above the current limit value.
Finally it is possible that the motor is overloaded, the VSD is in current limit a situation which results in a very low speed and eventually a trip.
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  9/16/2012, 4:41 AM
Vithani
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SATISH CHOWDARY wrote:
Dear all,
  I have 75 KW MM 440 drive it was running with out load but when drive started with  load it was dispalaying alarm A 502(Current limit) and motor not running.

Plz anyone give me the solution

Satish


Well, This is not  Auto Reset problem so dont go for itRnf:lblSmileyTooltip_

Now, i have seen same things in few cases. Things to check - P640- Your current Limit, r0027 Actual current

What control mode is selected? If it is V/F ( P1300=0), try to go for SLVC (P1300=20)
For this, you need to do optimization also to get good result (P1910 & P1960)

Refere Manuals - Operating Instruction and Parameter List

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