Toshiba TOSVERT VF-MB1 Instruction Manual page 160

An example of setting when f302=2
Input voltage
Motor speed
• Even after the recovery from an input power failure, the motor continues deceleration stop. If the voltage in the
inverter main circuit falls below a certain level, however, control will be stopped and the motor will coast.
• If the voltage in main circuit moff at Non-stop control during power failure, the motor will coast and inverter
display is shown " stop⇔0.0    (displayed alternately)". And then, If recovery from the input power failure, the
motor continues coasting.
An example of setting when f302=3 (when the function of receiving power failure synchronized signal is
assigned to the input terminal S1) 
f114 (Input terminal function selection 4A (S1)) =62 (Power failure synchronized signal)
6
• If the parameters f317, f318 are set for same acceleration and deceleration time and if power failure
synchronized signal set using the input terminal functions (62, 63) are used, multiple motors can be stopped at
about the same time or speed commands can be issued to them at about the same time.
• If a power failure synchronized signal is impressed, the synchronized deceleration function decreases the output
frequency to 0Hz to decelerate the motor linearly within the time specified with f317 . (The S-pattern operation
function or the braking sequence cannot be used along with this function.)
When the motor comes to a full stop, the message " stop " appears on the display panel.
• If the power failure synchronized signal is canceled during synchronized deceleration, the synchronized
acceleration function increases the output frequency to the frequency at the start of synchronized deceleration or to
the command frequency, whichever is lower, to accelerate the motor linearly within the time specified with f318 .
(The S-pattern operation function, the braking sequence or the auto-tuning function cannot be used along with this
function.)
When acceleration is started, the message " stop " on the display panel disappears.
• If a forward/reverse switching command or a stop command is issued during synchronized acceleration or
deceleration, synchronized acceleration or deceleration will be canceled.
Deceleration stop
Power failure
synchronized
Inverter 1
signal
(S1 terminal)
Motor speed
Inverter 2
Time
ON

Time

F-40
E6581697