Argon supply voltage troubleshooting
If there's problem getting rid of permanent under voltage fault in Argon, it may be caused by following reasons:
- STO1 input is not powered by 24 VDC
- Drive's internal fuse has blown. To check this safely discharge drive, remove cover, remove fuse and measure fuse resistance. If high current & power is demanded from the drive, then a higher amperage fuse may be installed in the place of original. Maximum fuse size is 16A slow blow and the factory default is between 6.3-8 A slow blow.
Drive internal AC circuity
Inrush current limiter is based on a resistor which is bypassed by a GraniteCore controlled relay after HV DC supply has risen near nominal levels.
Verifying internal HV DC bus voltage can be done by reading the voltage value from Granity Testing tab or by measuring DC voltage between VP and VN terminals.
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