Siemens 6RA70 DC Drive
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Jun 13, 2022 8:56 am
How can resolve problem A028 alarm in siemens 6RA70 DC Drive ?
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Jun 13, 2022 8:57 am
Cause : Motor overtemperature (active in all operating states) When parameter P498=1 (thermostat connected): Alarm in response to log. “0” signal (longer than 10s) at terminal 214
Possible causes
♦ Thermostat for monitoring motor temperature has responded
♦ Interruption in encoder cable
