Hitachi SJ Series, User Manual

Page: 177 / 786

12-4-8
Chapter 12 Inverter Functions
Pulse string
input
Terminal [B]
Terminal [A]
Forward/Reverse
rotation command
Number of
detected pulses
Positive (+)
Time
Negative (-)
Internal arithmetic block diagram
Internal processing is schematically drawn.
For details of the pulse string input mode, see below.
Command frequency is determined by the frequency of the
pulse string input.
The sign of the command frequency is determined in the
following way.
(1) Mode 0: [ob-11]=00 90°phase difference pulse string
(2) Mode1:[ob-11]=01 Forward and reverse commands
+ pulse string
(3) Mode 2: [ob-11]=02 Forward rotation pulse string
+ reverse rotation pulse string
Pulse string
frequency
acquisition 1+sT
1
×
Max. frequency
IM:[Hb105]
SM:[Hd105]
Frequency
command
Bias, limit, cut
Hz
%
Frequency command unit
Pulse string frequency processing block
Pulse string frequency scale
G [ob-12]
(0.05kHz-32.00kHz)
G
1
Filter time constant T
[ob-13]
(0.01s
～
2.00s)
%
0
100
-100 100
Input
Outpu
t
Upper limit [ob-15]
(0.00%-100.00%) Lower limit [ob-16]
(0.01%-100.00%)
Bias [ob-14]
(-100.00%-100.00%)
-100
(%)
0
Limit
Limit
Cut
Cut
Bias
Terminal
[A]
Terminal
[B]
Forward rotation
pulse string input
Reverse rotation
pulse string input
Number of
detected pulses
Time
Positive
Negative
Terminal
[A]
Terminal
[B]
Pulse string
input
Pulse string
input
Number of
detected pulses
Positive (+)
Time
Negative (-)