Toshiba TOSVERT VF-MB1 Instruction Manual page 204

[Parameter setting]
f605
Note1) A check for output phase failures is made during auto-tuning, regardless of the setting of this parameter.
Note2) When parameter pt = 5 or 6 is selected, f605 = 3 to 5 do not work.
6.24.6 Input phase failure detection
f608 : Input phase failure detection selection
 Function
6
f608 = 0 : No tripping. (Failure signal FL not activated)
f608 = 1 : Phase failure detection is enabled during operation. The inverter will trip if the abnormal voltage
[Parameter setting]
f608
Note1: Setting  to  (input phase failure detection: disabled) may result in a breakage of the
Note2: Parameter f608 is invalid for single-phase input model.
Note3: When operating the inverter with DC input, set f608 = 0 (none).
Title Function
Output phase failure detection
selection
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 eph1 . 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 reactor .
status of main circuit capacitor persists for few minutes or more. (Failure signal FL activated)
Title Function
Input phase failure detection selection
capacitor in the inverter main circuit if operation is continued under a heavy load in spite of the
occurrence of an input phase failure.
Adjustment range
0: Disabled
1: At start-up (only one time after
power on)
2: At start-up (each time)
3: During operation
4: At start-up + during operation
5: Detection of cutoff on output side
Adjustment range
0: Disabled
1: Enabled
F-84
E6581697
Default setting
0
Default setting
1