Instruction manual

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8. Fault Diagnosis
 Protective and Diagnostic Functions
This section describes the alarm and fault displays, the fault conditions,
and the corrective actions to be taken if the VS-606V7 malfunctions.
Inverter alarms are classified into alarm display and fault display.
Alarm display:When a minor fault occurs in the Inverter, the Digital
Operator flashes the display. In this case, the operation
is continued, and restored automatically as soon as the
cause is removed. Multi-function output can output the
minor fault status to external devices.
Fault display: When a major fault occurs in the Inverter, the protective
function operates, and the Digital Operator lights the dis-
play and shuts off the output to stop the Inverter. The
fault can be output as a fault output to the external
devices by multi-function output.
To reset the fault, turn ON the reset signal with the run command OFF
or cycle the power after taking the corrective action.
* Selecting "always ON" mode at fan operation selection, the power
must be cycled to release the alarm display.
 Corrective Actions of Models with Blank Cover
1. Input fault reset or cycle the power supply OFF and ON.
2. When a fault cannot be corrected:
(1) Turn the power supply OFF and check the wiring and external circuit
(sequence).
(2) Turn the power supply OFF and replacce the blank cover with the
Digital Operator to display faults. The faults are displayes after turn-
ing the power ON.