Hitachi SJ-FB manual Setting example, Control block diagram of the electron gear function

[Setting example]		Chapter 7	FUNCTIONS
Main Motor	: Encoder pulse 1024 pulses
Sub Motor : Encoder pulse 3000 pulses
(Main motor rotation speed) : (sub motor rotation speed) = 2 : 1
Set the following for slave inverter in this case.
Electronic gear setting position (P019) : RET (command pulse side)
Electronic gear numerator (P020) : 3000
Electronic gear ratio denominator (P021)		: 1024*2=2048

Figure 7-4 Control block diagram of the electron gear function (1)

Figure 7-5 Control block diagram of the electron gear function (2)

REF

FFWG
Feed forward gain
+	+
G	ASR
-	+
Position loop gain
N
D

		FB	FFWG
			Feed
	Electron gear establishment positiforwardn selectiongain = FB
	N	+	+
REF			G	ASR
	D	-
			+
			Position loop gain

FB

Electron gear establishment position selection = REF

29