Speed Control (Asr) Structure; Speed Control Structure; Gain Settings: C5-01, C5-02; Low-Speed Gain Settings: C5-03, C5-04, C5-07 - YASKAWA VARISPEED-616G5 Instruction Manual

Basic Operation

6.4.4 Speed Control (ASR) Structure

Fault Display
PG Circuit Fault
PGO: PG break detected)
Tune Aborted
Minor Fault: VVV
V/f Over Setting V/f Over Setting
6.4.4 Speed Control (ASR) Structure
6
Pulses aren't being input
from the PG even though a
rotation output is being sent
to the motor.
---
The torque command ex-
ceeded 100%, and the non-
load current exceeded 70% load current exceeded 70%
of the rated motor current.
The following block diagram shows the structure of the speed control.
D
+
Frequency
reference
Detected
speed
In vector flux control, the ASR's P gain is the maximum frequency standard.
Fig 6.14

Speed Control Structure

Gain Settings: C5-01, C5-02

J
Set the proportional gain and the integral time of the speed control (ASR).
D
User User
Constant Name
Number
ASR proportional
C5-01
(P) gain 1
ASR integral (I)
C5-02
time 1

Low-speed Gain Settings: C5-03, C5-04, C5-07

J
Use these constants to set different proportional gain and integral time settings for low-speed opera-
D
tion. Constant C5-03 sets the low-speed proportional gain of the speed loop (ASR), and C5-04 sets the
low-speed integral time.
Set constant C5-07 to the frequency at which to switch to the low-speed ASR proportional gain and
D
integral time.
User User
Constant Name
Number
ASR proportional
C5-03
(P) gain 2
ASR integral (I)
C5-04
time 2
ASR switching fre-
C5-07
quency
Probable Cause
S The cable to the PG is bro-
ken/disconnected.
S The PG's power supply is
broken/disconnected.
A minor Inverter fault oc-
curred.
The rated voltage and the
frequency settings are incor-
rect.
The load is connected to the
motor.
C5-01, C5-03
+
P
+
−
I
C5-02, C5-04
Change g
during during Setting Setting
Opera- Range
tion
0.00 to
f
300.00
0.000 to
f
10.000
Change g
Setting Setting
during during
Range
Opera-
tion
0.00 to
f
300.00
0.000 to
f
10.000
0.0 to 400.0
×
6 - 36
Remedy
Check the wiring and correct any problems.
Check the minor fault indicated in the boxes
in the display shown at the left.
Check and adjust the settings.
Disconnect the load from the motor.
Torque limits
Primary
delay filter
C5-06
L7-01 to L7-04
Valid Access Levels
Factory Factory
Unit
V/f V/f with
Setting
Control PG
Multi-
B
20.00
×
ple
s 0.500 B
×
Valid Access Levels
Factory Factory
Unit
V/f V/f with
Setting
Control PG
Multi-
20.00 B
×
ple
s 0.500 B
×
Hz 0.0
× ×
Secondary cur-
rent reference
Open
Flux
Loop
Vector
Vector
B
×
B
×
Open
Flux
Loop
Vector
Vector
B
×
B
×
A
×