Hitachi SJ-FB - Manual (Page 29)

29
Chapter 7 FUNCTIONS
[Setting example]
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)
G
Feed forward gain
Position loop gain
ASR REF
-
N
D
FFWG
+
+
+
FB
Electron gear establishment position selection = FB
G
Feed forward gain
Position loop gain
ASR REF
FB
-
N
D
FFWG
+
+
+
Electron gear establishment position selection = REF