Link Voltage Supervision (F0021 And F0022); Plug-In Module Communication Fault (F0031); W Control Mode Self-Tuning Fault (F0033); Remote Hmi Communication Fault Alarm (A0700) - WEG CFW501 V1.8X Programming Manual

14.6 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 14.3: Supervision actuation levels of the DC link voltage on page

14.7 PLUG-IN MODULE COMMUNICATION FAULT (F0031)

It occurs when the inverter detects a plug-in module connected, but cannot communicate with it.
14.8 V V W CONTROL MODE SELF-TUNING FAULT (F0033)
At the end of the self-tuning process of the V V W 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.

14.9 REMOTE HMI COMMUNICATION FAULT ALARM (A0700)

After connecting the remote HMI to the CFW501 terminals and parameter P0312 being programmed for interface
with remote HMI, a supervision of the communication with the HMI is activated so that alarm A0700 is activated
whenever this communication link is broken.

14.10 REMOTE HMI COMMUNICATION ERROR ALARM (F0700)

The condition for fault F0700 is the same as that of alarm A0700, but it is necessary that the HMI be the source
for some command or reference (HMI Keys option) in parameters P0220 to P0228.

14.11 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.
NOTE!
When this fault occurs, contact WEG.

14.12 FAULT IN THE CPU (F0080)

The execution of the inverter firmware is monitored at several levels of the firmware internal structure. When some
internal fault is detected in the execution, the inverter will indicate F0080.
NOTE!
When this fault occurs, contact WEG.
Table 14.3: Supervision actuation levels of the DC link voltage
Supply Level F0021
200 to 240 Vac 200 Vdc
380 to 480 Vac 360 Vdc
500 to 600 Vac 500 Vdc
Faults and Alarms
14-7.
Level F0022
410 Vdc
810 Vdc
1000 Vdc
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CFW501 | 14-7