Toshiba Tosvert VF-S15 Instruction Manual page 173

 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)
Power failure
synchronized
signal
(terminal S1)
Motor speed
• If the parameters f317, f318 are set for same acceleration and deceleration time and if power failure
synchronized signal of the input terminal functions (62, 63) are used, multiple motors can be stopped at about
the same time or make them reach to each frequency command.
• If a power failure synchronized signal is ON, 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
6
function or the braking sequence cannot be used along with this function.)
When the motor comes to a full stop, the message "stop" appears.
• 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" 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.
• When the motor is started again after the synchronized deceleration function stop, turn off the power failure
synchronized signal.
• In case of using the synchronized deceleration function, make sure that overvoltage limit operation is not working
during deceleration.
 An example of setting when f302=4
Synchronized deceleration if a power failure synchronized signal is ON or if a power failure occurs. Synchronized
acceleration if the power failure synchronized signal is canceled or power is restored.
Inverter 1
ON


Inverter 2
F-62
Time
E6581926