Delta Electronics VFD-M manual Settings, Function, Description

			Chapter 4 Parameters
	Settings	Function	Description
21		RESET Command (N.C)
22		Control source: External	Enter values 22, 23, or 24 to set the control source to be the
		Terminal	external terminals, keypad or communication respectively.
			This setting is used to create functions for manual/auto, and
23		Control source: Keypad
			remote/near-end control. When these three functions are
24		Control source:	used at the same time, the priority is 22-I/O > 23-Keypad >
		Communication	24-Communication.
		Parameter Lock (Write	This function will disable the write function and all the content
			of read are 0. The application is for customer having a key to
25		disable, Read is always
			control the operator to modify parameters or modify the
		0)
			parameter by improper use.
26		PID Disable (N.O.)	This function pause the PID control. It is commonly used for
			manual operation or function testing, and to recover the PID
27		PID Disable (N.C.)
			function when the system is normal.
28		Second Source for	This function is used with Pr. 142 to select a different
		Frequency Command	frequency source for control.
29		Forward (contact is	This function has top priority to set the direction for running (If
		open) / Reverse (contact	“Pr. 24 inhibit REV function” is not set). No mater what the
		is close)	present direction of run is, the contact N.O. is forward and the
			contact N.C. is reverse, once this function is set.
			The requirement for setting direction is Pr. 24 > setting 29 of
			Pr. 39-Pr. 42 > Pr. 38.
30		One-Shot PLC Run
31		Index Input Signal	This function is used with parameters 149 to 151. The position
			where AC drive stops will be regarded as the zero position
			and it will move to the angle that Pr. 150 sets.
32		Virtual Timer Input	This function is for counting at the speed of the output
			frequency.

Note: The settings 00~32 in Pr. 39 to Pr.42 can be used to set multi-function terminals (M2-M5) but the settings cannot be used repeatedly at the same time (besides settings 20).

Revision May 2008, ME14, SW V3.04 4-39