Delta Electronics VFD-S manual Parameter Settings for Applications

Chapter 5 ParametersVFD-S Series

5.2 Parameter Settings for Applications

„ Speed Search

Applications	Purpose	Functions	Related
			Parameters
Windmill, winding	Restart free-	Before the free-running motor is	8-06
machine, fan and all	running motor	completely stopped, it can be restarted	8-07
inertia loads		without detection of motor speed. The
		AC motor drive will auto search motor
		speed and will accelerate when its
		speed is the same as the motor speed.

„DC Brake before Running

Applications	Purpose	Functions	Related
			Parameters
When e.g. windmills,	Keep the free-	If the running direction of the free-	8-00
fans and pumps rotate	running motor at	running motor is not steady, please	8-01
freely by wind or flow	standstill.	execute DC brake before start-up.
			8-17
without applying power
„ Multi-step Operation
Applications	Purpose	Functions	Related
			Parameters
Conveying machinery	Cyclic operation by	To control 7-step speeds and duration	4-04~4-08
	multi-step speeds.	by simple contact signals.	5-00~5-06
„ Switching acceleration and deceleration times
Applications	Purpose	Functions	Related
			Parameters
Auto turntable for	Switching	When an AC motor drive drives two or	1-09~1-12
	acceleration and	more motors, it can reach high-speed	4-04~4-08
conveying machinery	deceleration times
		but still start and stop smoothly.
	by external signal

„Operation Command

Applications	Purpose	Functions	Related
			Parameters
General application	Selecting the	Selection of AC motor drive control by	2-01
	source of control	external terminals, digital keypad or	4-04~4-08
	signal	RS485.

5-12 Revision August 2008, SE09, SW V2.61