WEG CFW701 Referencia Rápida página 28

Fault/Alarm
A0788: It indicates to the user that the
High Level for External External PID controller 1 feedback
PID Controller 1 is high.
Feedback
F0789: It indicates to the user that the
High Level for External External PID controller 1 feedback
PID Controller 1 is high.
Feedback
A0790: It indicates to the user there is
Programming AIx not analog input programmed for
for External PID External PID controller 2 feedback.
Controller 2 Feedback
A0792: It indicates to the user there is not
Programming digital input programmed for External
DIx for External PID controller 2 Automatic/Manual
PID Controller 2 selection.
Automatic/Manual
Selection
A0794: It indicates to the user there is not
Programming AOx analog output programmed for
for External PID External PID controller 2 output.
Controller 2 Output
A0796: It indicates to the user that the
Low Level for External External PID controller 2 feedback
PID Controller 2 is low.
Feedback
F0797: It indicates to the user that the
Low Level for External External PID controller 2 feedback
PID Controller 2 is low.
Feedback
A0798: It indicates to the user that the
High Level for External External PID controller 2 feedback
PID Controller 2 is high.
Feedback
F0799: It indicates to the user that the
High Level for External External PID controller 2 feedback
PID Controller 2 is high.
Feedback
Notes:
(1)
Very long motor cables, with more than 100 m (328.08 ft), presents a high parasitic capacitance to the ground. The
circulation of a leakage current through this capacitance may cause the activation of the ground fault circuit, and
consequently an F0074 trip immediately after the inverter enabling.
POSSIBLE SOLUTION:
„
To reduce the switching frequency (P0297).
ATTENTION!
A bad contact in the HMI cable, or electric noise in the installation, can cause a failure in the communication
between the HMI and the control board. In such case, the operation through the HMI becomes impossible
and the HMI indicates the following message on the display:
Quick Parameter Reference, Faults and Alarms
Description
Parameter P1075 is programmed in 1 and the External
PID controller 1 feedback value is remaining above the
value programmed in P1078 for the time programmed
in P1079.
Parameter P1075 is programmed in 2 and the External
PID controller 1 feedback value is remaining above the
value programmed in P1078 for the time programmed
in P1079.
Parameter P0231 or P0236 or P0241 is not
programmed in 9.
Parameter P0263 or P0264 or P0265 or P0266
or P0267 or P0268 or P0269 or P0270 is not
programmed in 22.
Parameter P0251 or P0254 is not programmed in 17.
Parameter P1095 is programmed in 1 and the External
PID controller 2 feedback value is remaining below the
value programmed in P1096 for the time programmed
in P1097.
Parameter P1095 is programmed in 2 and the External
PID controller 2 feedback value is remaining below the
value programmed in P1096 for the time programmed
in P1097.
Parameter P1095 is programmed in 1 and the External
PID controller 2 feedback value is remaining above the
value programmed in P1098 for the time programmed
in P1099.
Parameter P1095 is programmed in 2 and the External
PID controller 2 feedback value is remaining above the
value programmed in P1098 for the time programmed
in P1099.
Possible Causes
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