WEG CFW500 V1.8X, Руководство по программированию, Страница: 152 / 172

Fault and Alarms
15-6 | CFW500
15
ATTENTION!
An improper change of P0397 may damage the inverter. Only do that under WEG technical directions.
15.5 OVERCURRENT PROTECTION (F0070 AND F0074)
The ground fault and output overcurrent protections act very fast by means of the hardware to instantly cut the
output PWM pulses when the output current is high.
Fault F0070 corresponds to an overcurrent between output phases, while fault F0074 indicates an overcurrent
from the phase to the ground (PE).
The protection current level depends on the used power module so as the protection is effective, still this value is
well above the inverter rated operating current (P0295).
15.6 LINK VOLTAGE SUPERVISION (F0021 AND F0022)
The DC link voltage is constantly compared to the maximum and minimum values according to the inverter power
supply, as shown in
Table 15.3 on page 15-6 .
Table 15.3: Supervision actuation levels of the DC link voltage
Supply Level F0021 Level F0022
200 to 240 Vac 200 Vdc 410 Vdc
380 to 480 Vac 360 Vdc 810 Vdc
500 to 600 Vac 500 Vdc 1000 Vdc
15.7 PLUG-IN MODULE COMMUNICATION FAULT (F0031)
It occurs when the inverter detects a plug-in module connected, but cannot communicate with it.
15.8 VVW CONTROL MODE SELF-TUNING FAULT (F0033)
At the end of the self-tuning process of the V VW mode (P0408 = 1), if the estimate motor stator resistance (P0409)
is too high for the inverter in use, the inverter will indicate fault F0033. Besides, the manual modification of P0409
may also cause fault F0033.
15.9 REMOTE HMI COMMUNICATION FAULT ALARM (A0750)
After the connection of the remote HMI to the CFW500 terminals with parameter P0312 set to remote HMI
interface, a supervision of the communication with the HMI is activated so that alarm A0750 is activated whenever
this communication link is broken.
15.10 REMOTE HMI COMMUNICATION ERROR FAULT (F0751)
The condition for fault F0751 is the same as that of alarm A0750, but it is necessary that the HMI be the source
for some command or reference (HMI Keys option) in parameters P0220 to P0228.
15.11 AUTO-DIAGNOSIS FAULT (F0084)
Before starting loading the factory default (P0204 = 5 or 6), the inverter identifies the power hardware in order
to obtain information on the power module voltage, current and trigger, as well as it verifies the inverter control
basic circuits.
Fault F0084 indicates something wrong happened during the identification of the hardware: nonexistent inverter
model, some loose connection cable or damaged internal circuit.