Diagnostics and Troubleshooting CDHD
288 User Manual
u Un de r- Voltage
u Lit steadily
D e finit ion Under-Volt age
Type Warning
Act ive disa ble Not Applicable
M e ssage # WRN 4
Descr iption The bus voltage is below the m inim um value.
I f t he value of variable UVMODE is 1 or 2, and the drive
is enabled, an under-voltage warning is issued.
Action required
Check that the main AC voltage supply is connected to
the drive and is switched on. The under-voltage lim it can
be read with the UVTHRESH comm and.
u Un de r- Voltage
u Flashing
D e finit ion Under-Volt age
Type Fault
Act ive disa ble Yes
M e ssage # FLT 11
Descr iption The bus voltage is below the m inim um value.
If the value of variable UVMODE is 3, and the drive is
enabled, an under-volt age fault is issued.
This fault disables the drive.
Action required
Check that the main AC voltage supply is connected to
the drive and is switched on. The under-voltage lim it can
be read with the UVTHRESH com mand.