Why does the Series 3000/4000 Circuit Monitor display show stars or asterisks for frequency?
Issue
Why does the Series 3000/4000 Circuit Monitor display show stars or asterisks for frequency?
Product Line
CM3000 and CM4000 series meter
Cause
Customer see stars or asterisks for frequency on CM3000 or CM4000 front display.
Environment
Reading Frequency from front display on CM3000 or CM4000 meter.
Resolution
There are several possibilities in which this could occur:
- The frequency is changing too quickly. (Possible causes could be when monitoring a Generator that has not stabilized the voltage frequency)
- The voltage on phase A and C has dropped to zero. (Normal)
- (CM4000 series only) The Current Voltage Module (CVM) module is not properly seated. (NOTE: In this instance cycling control power to the meter will not help.)
- (CM4250 Only) This symptom can also be caused by the temperature chip in the meter when the firmware version is earlier than 14.4. To confirm this is the issue read register 3238. If the value is zero, then this may not be the issue. If 3238 isn't zero use the command register writes as shown below to write to 3238 a zero. It is recommend that the firmware be upgraded to the latest version available.
Note: Write to one register at a time in the specific order above.
게시 대상: 슈나이더 일렉트릭 Korea
도움이 필요하신가요?
제품 선택기
애플리케이션에 적합한 제품과 액세서리를 빠르고 쉽게 찾을 수 있습니다.
견적 받기
영업 관련하여 온라인으로 문의하시면 전문가가 연락드립니다.
구매처
해당 지역의 가장 가까운 슈나이더 일렉트릭 대리점을 쉽게 찾을 수 있습니다.
지원 센터
한 곳에서 모든 요구 사항에 대한 지원 리소스를 찾아보십시오.