43
(22) Timer ON_Delay Time (Bn-37)
(23) Timer OFF_Delay Time (Bn-38)
•The timer function is enabled when the timer function input setting (Sn-25~28=19)
and its timer function output setting (Sn-30~32=21) are set for the multi-function
input and output respectively.
•These inputs and outputs serve as general-purpose I/O . Setting ON/OFF delay
time (Bn-37/38) for the timer can prevent chattering of sensors, switches and so on.
•When the timer function input ON times is longer than the value set for Bn-37, the
timer function output turns ON.
•When the timer function input OFF time is longer than the value set for Bn-38, the
timer function output turns OFF. An example is shown below.
Timer function input
ON ON
Timer function output
ON ON
Bn-37 Bn-37Bn-38 Bn-38
Fig. 16 An operation example of timer function
(24) Energy_Saving Gain (Bn-39)
•Input the energy_saving command while a light load causes the inverter output
voltage to be reduced and save energy. Set this value as a percentage of the V/F
pattern. The setting range is 50~150%. The factory setting is 100% and the energy
saving function is disabled. If the energy saving gain Bn-39 is not 100%, the
energy saving function is enabled.
•In energy saving mode (Bn-39≠100), the output voltage will automatically
decrease and be proportional to energy saving gain Bn-39. The Bn-39 setting
should not be small so that the motor will not stall.
•The energy saving function is disabled in the PID close-loop control and during
acceleration and deceleration.
Run command
Output voltage
V/f(Cn-02 & Cn-08) * Bn-39
0.1 sec 0.1 sec
Fig. 17 Time chart for energy-saving operation
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