Delta Electronics VFD-VL 01-12, 01-14, 01-16, 01-18, 01-13, 01-15, 01-17, 01-19, 01-20, 01-21

Chapter 4 Parameters
01-12	Accel. Time 1				Unit: 0.01
01-14	Accel. Time 2				Unit: 0.01
01-16	Accel. Time 3				Unit: 0.01
01-18	Accel. Time 4				Unit: 0.01
Control	VF	VFPG	SVC	FOCPG FOCPM	Factory setting: 3.00
mode
	Settings	0.00~600.00 sec
01-13	Decel. Time 1				Unit: 0.01
01-15	Decel. Time 2				Unit: 0.01
01-17	Decel. Time 3				Unit: 0.01
01-19	Decel. Time 4				Unit: 0.01
Control	VF	VFPG	SVC	FOCPG FOCPM	Factory setting: 2.00
mode
	Settings	0.00~600.00 sec
01-20	JOG Acceleration Time				Unit: 0.01
01-21	JOG Deceleration Time				Unit: 0.01
Control	VF	VFPG	SVC	FOCPG FOCPM	Factory setting: 1.00
mode
	Settings	0.00~600.00 sec

The Acceleration Time is used to determine the time required for the AC motor drive to ramp from 0Hz to Maximum Output Frequency (Pr.01-00).

The Deceleration Time is used to determine the time require for the AC motor drive to decelerate from the Maximum Output Frequency (Pr.01-00) down to 0Hz.

The Acceleration/Deceleration Time 1, 2, 3, 4 are selected according to the Multi-function Input Terminals settings. The factory settings are acceleration time 1 and deceleration time 1.

The larger against torque and inertia torque of the load and the accel./decel. time setting is less than the necessary value, it will enable torque limit and stall prevention function. When it happens, actual accel./decel. time will be longer than the action above.

4-32 Revision Nov. 2008, VLE1, SW V1.03