Internal Speed Loop Gain Settings - Hitachi SJ300 Series Instruction Manual

Internal Speed
When sensorless vector control, 0Hz sensorless vector control, or vector control with sensor is
selected for the control method, the Control Gain Switching function selects between two sets
Loop Gain
of gains in the internal speed loop. These gains are used in proportional and integral compensa-
Settings
tion. Use option code 26 to assign the [CAS] function to an intelligent input terminal. Use
option code 43 to select between P and PI control.
Valid for
inputs:
Required
settings:
Notes:
• When Control Gain Switching is not selected
The table below lists the functions and parameter settings related to internal speed loop gains.
Function Code
C001 - C008
H005 / H205
H050 / H250
H051 / H251
H052 / H252
H070
H071
H072
Opt.
Symbol Function Name
Code
26 CAS Control Gain
Switching
43 PPI P / PI Control
Switching
C001, C002, C003, C004,
C005, C006, C007, C008
A044 / A244 / A344 =
03 (SLV), or
04 (0 Hz domain), or
05 (V2)
for an intelligent input terminal, the default
gains in effect correspond to the OFF state of
[CAS].
Parameter
A044 / A244 / Control method
A344 selection
Intelligent input
selection
Speed response
PI proportional gain
PI integral gain
P proportional gain
PI proportional gain
for switching
PI integral gain for
switching
P proportional gain
for switching
SJ300 Inverter
Input
Description
State
ON Gains in parameters H070, H071, and
H072 are selected
OFF Gains in parameters H050, H051, H052;
or, H250, H251, H252 (2nd motor) are
selected
ON Selects Proportional control (P)
OFF Selects Proportional-Integral control (PI)
Example: (Requires input configuration—
see page 3–47. Jumper position shown is
for –xFU/-xFR models; for –xFE models,
see page 4–12.)
TH FW
8
P24 PLC CM1
7
See I/O
specs on
page 4–9.
Setting Range
03 SLV (does not use A344)
04 0-Hz Domain SLV (does not
use A344)
05 V2 (does not use A244 or
A344)
43 PPI : P/I switching
0.001 to 65.53 No dimension
0.0 to 999.9/1000 % gain
0.0 to 999.9/1000 % gain
0.01 to 10.00 No dimension
0.0 to 999.9/1000 % gain
0.0 to 999.9/1000 % gain
0.0 to 10.0 No dimension
4–31
CAS
PPI
CM1
5 3 1
6 4 2
Description