Siemens 6RA70 DC Drive
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Jun 13, 2022 9:44 am
How can resolve problem A038 alarm in siemens 6RA70 DC Drive ?
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Jun 13, 2022 9:45 am
Cause : Overspeed (active in operating states of – –, I, II)
The monitoring function responds if the actual speed value (selected in P595) exceeds the positive (P512) or negative (P513) threshold by 0.5%.
Possible causes
♦ Lower current limit has been input
♦ Current-controlled operation
♦ P512, P513 are set too low
♦ Tachometer cable contact fault in operation close to maximum speed
