Sanken SVCO6, Instruction Manual, Page: 140 / 326

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7-3 Description of Functions
F1309 Operation direction switching in V/f control mode
This function specifies the action for operation direction switching in V/f control mode.
Code No. Function Name Data Content
Setting
Resolution
Factory
Presets
1309 Operation direction switching in
V/f control mode
0: Start from the direction opposite to
current direction after a stop
1 0
1: Continuous operation
●When F1309 = 0, the start and stop-related functions are executed in accordance with the values of the function codes.
The operation stops according to the function code. Then, the operation immediately starts from the direction opposite
to current direction in accordance with the setting value of the function code. However, when switching the direction of
operation, neither the DC braking in stopped state nor the DC braking at start works.
●When F1309 =1, regardless of function codes related to start or stop, acceleration will be executed consecutively in
opposite direction after deceleration. When switching the direction of operation, the output frequency is continuously
variable and the rotation direction can be switched smoothly.
Note 1: When F1309=0, the stop or start is executed in the mode specified by the function code. Therefore, the output frequency
near 0Hz is not continuously variable. And, because DC braking is executed, if the starting frequency or DC braking
start frequency is set with a too big value, motor vibration and overcurrent alarm may occur.
Note 2: When reverse run flying start function is set, regardless of the setting of F1309, rotation direction switching is a
continuous action.
Note 3: In speed control mode, regardless of the setting of F1309, rotation direction switching is a continuous action.
F1315 Shortest operation time function
Even when a brief operation signal is input via an external control terminal, this function holds the operation command
for the time set by the shortest operation time function.
Code No. Function Name Data Content Setting
Resolution
Factory Presets
F1315 Shortest operation time
function
0 - 99.99 sec. 0.1 s 0
●
During operation by the external control terminal, the function defines the minimum ON width for the input signal
of multifunctional input terminal FR or RR. In other words, the function starts counting when the input signal turns
on, and the signal is assumed to remain on for the duration of the count even if the multifunctional input terminal FR
or RR is set to off. After the time set by F1315, the inverter operates again according to the current status of
multifunctional input terminal FR or RR.
External operation signal
FR or RR
Internal operation
signal of inverter
Shortest operation time
F1315
Note 1: If the time setting of F1315 is changed while the shortest operation time function is counting the time, the new value
will become active from the next time.
Note 2: This function is active only when operation command selection: F1101=2.
ON
ON
OFF
OFF