Table of Contents
Advertisement
efesotomasyon.com -Toshiba inverter,drive,servo,plc
6.16.6 Input phase failure detection
: Input phase failure detection selection
• Function
This parameter detects inverter input Phase failure. If the abnormal voltage status of main circuit
capacitor persists for few minutes or more, the tripping function and the FL relay will be activated.
Trip display is . Detection may not be possible when operating with a light load, or when the
motor capacity is smaller than the inverter capacity.
If the power capacity is larger than the inverter capacity (more than 200kVA or more than 10 times),
detection errors may occur. If this actually happens, install an AC or DC reactor .
= : No tripping (Failure signal FL not activated)
= : Phase failure detection is enabled during operation. The inverter will trip if the abnormal voltage
status of main circuit capacitor persists for ten minutes or more. (Failure signal FL activated)
Title
Input phase failure detection selection
Note1: Setting to (input phase failure detection: disabled) may result in a breakage of the
capacitor in the inverter main circuit if operation is continued under a heavy load in spite of the
occurrence of an input phase failure.
Note2: Parameter f608 is invalid for single-phase input model.
Note3: When operating the inverter with DC input, set = : (none).
6.16.7 Control mode for small current
: Small current detection hysteresis
: Small current trip/alarm selection
: Small current detection current
: Small current detection time
• Function
When the current lower than the value set at flows for more than the time set at ,
tripping an alarm output are possible. Trip display is .
= : No tripping (Failure signal FL not activated).
A small current alarm can be put out by setting the output terminal function selection parameter.
= : The inverter will trip (Failure signal FL activated) if a current below the current set with
flows for the period of time specified with .
Function
0: Disabled, 1: Enabled
F-49
Adjustment range
Default setting
E6581595
1
6
Advertisement
Table of Contents
