Nidec & Control Techniques Unidrive M700, M600, M400, HS30 & HS70 Drive
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Apr 12, 2024 10:31 am
Cause : Analog input 1 current loss comes when an Input 1 Loss trip indicates that a current loss was detected in current mode on Analog input 1 (Terminal 5, 6). In 4-20 mA and 20-4 mA modes loss of input is detected if the current falls below 3 mA.
1. Check control wiring is correct
2. Check control wiring is undamaged
3. Check the Analog Input 1 Mode (07.007)
4. Current signal is present and greater than 3 mA
