Toshiba Tosvert VF-S15 Instruction Manual page 226

=: Inverter is stopped. However, it is not tripped (Failure signal FL not activated). The inverter stop
[Parameter setting]
Title
f627
6.29.14 Analog input break detection
f633 : Analog input break detection level (VIC)
f644 : Operation selection of analog input break detection (VIC)
6
f649 : Fallback frequency
 Function
f633 =0: Disabled....Not detected.
f633 =1-100....The inverter will output a trip or an alarm, if the VIC input remains below the specified value
[Parameter setting]
Title
f633
f644 
f649  Fallback frequency
Note : The VIC input value may be judged earlier to be abnormal, depending on the degree of deviation of
(Failure signal FL not activated.), only after detection of a voltage not exceeding 50% of its rating.
Be sure to connect the input AC or DC reactor specified in section 10.4.
Function
Undervoltage trip/alarm
selection
The inverter will output a trip or an alarm, if the VIC value remains below the specified value for about
0.3 seconds. In such a case, trip " e-18 " and alarm " a-18 " is displayed.
for about 0.3 seconds.
Function
Analog input break detection level
(VIC)
Operation selection of analog input
break detection (VIC)
the analog data detected.
Adjustment range
0: Alarm only
(detection level 60% or less)
1: Tripping
(detection level 60% or less)
2: Alarm only
(detection level 50% or less, input
AC or DC reactor required)
3: -
Adjustment range
0: Disabled
1-100%
0: Tripping
1: Alarm only (Coast stop)
2: Alarm only ( f649 frequency)
3: Alarm only (Maintain running)
4: Alarm only (Deceleration stop)
ll - ul (Hz)
F-114
E6582175
Default setting
0
Default setting
0
0
0.0