Honeywell 3G SmartVFD HVFD3D3A0015 Installation And User Manual page 67

Troubleshooting
WARNING/ALARM 2, Live zero error
This warning or alarm only appears if programmed in 6-01 Live Zero Timeout
Function. The signal on one of the analog inputs is less than 50% of the minimum
value programmed for that input. Broken wiring or faulty device sending the signal
can cause this condition.
Troubleshooting
WARNING/ALARM 4, Mains phase loss
A phase is missing on the supply side, or the line voltage imbalance is too high.
This message also appears for a fault in the input rectifier on the adjustable fre-
quency drive. Options are programmed at 14-12 Function at Mains Imbalance.
Troubleshooting
WARNING 5, DC link voltage high
The intermediate circuit voltage (DC) is higher than the high-voltage warning limit.
The limit is dependent on the adjustable frequency drive voltage rating. The unit is
still active.
WARNING 6, DC link voltage low
The intermediate circuit voltage (DC) is lower than the low-voltage warning limit.
The limit is dependent on the adjustable frequency drive voltage rating. The unit is
still active.
WARNING/ALARM 7, DC overvoltage
If the intermediate circuit voltage exceeds the limit, the adjustable frequency drive
trips after a time.
Troubleshooting
62
• Remove the wiring from terminal 50. If the warning clears, the problem is
with the wiring. If the warning does not clear, replace the control card.
• Check connections on all the analog input terminals. Control card terminals
53 and 54 for signals, terminal 55 common. MCB 101 terminals 11 and 12
for signals, terminal 10 common. MCB 109 terminals 1, 3, 5 for signals,
terminals 2, 4, 6 common.
• Check that the adjustable frequency drive programming and switch settings
match the analog signal type.
• Perform input terminal signal test.
• Check the supply voltage and supply currents to the adjustable frequency
drive.
• Connect a brake resistor
• Extend the ramp time
• Change the ramp type
• Activate the functions in 2-10 Brake Function
31-00559-01