Inovance E174.1 fault code meaning
Inovance / E174.1
Series: MD520
HDI open
AC drive
Meaning: This fault is reported when the pulse frequency detected by DI5 is ≤ half the setting of F4-28 or F4-66.
Possible causes
- HDI input open.
- The HDI input signal frequency is too low, far below the minimum value set by F4-28 or F4-66.
Source: MD520 Commissioning Manual - Chinese, p. 112
Series: MD520HS-INT, MD520HS
HDI open
AC drive
Meaning:
Possible causes
Source: MD520HS-INT Series High-Speed AC Drive User Manual P130; MD520HS Series High-Speed AC Drive User Manual P132