Yaskawa Varispeed 626M5 - Manual (Page 169)

Control Constants
10-2
10.1 User Constants
The user constants are listed in the following table.
Table 10.1 User Constants
Con-
stant
No.
Name Explanation Change
* 1
Unit Standard
Setting
Upper
Limit/
Lower
Limit
C1 01
Speed Control
Proportional
G i (H)
Speed control proportional gain when high-speed gear is selected (i.e.,
MGR and LGR are OFF) or when high-speed winding is selected (i.e.,
CHW i OFF) I i K i i idi Yes %/Hz 30
255
C1-01
p
Gain (H)
K VHN
) g p g ( ,
CHW is OFF). Increasing K
VHN
increases rigidity
.
Torque reference P = K
VHN ×
Speed tolerance
Yes %/Hz 30
1
C1 02
Speed Control
Integral Time
(H)
Speed control integral time constant when high-speed gear is selected
(i.e., MGR and LGR are OFF) or when high-speed winding is selected
(i CHW i OFF) R d i i k Yes ms 600
1000
C1-02
g
(H)
τ
VHN
( , ) g p g
(i.e., CHW is OFF). Reducing τ
VHN
quickens response.
Torque reference I = Torque reference P
×
Time/τ VHN
Yes ms 600
5
C1 03
Speed Control
Proportional
Gain (M, L)
Speed control proportional gain when low-speed is selected (i.e., MGR
or LGR is ON) or when low-speed winding is selected (i.e., CHW is
ON). Yes %/Hz 30
255
C1-03 Gain (M, L)
K
VLN
ON).
Increasing K
VLN
increases rigidity.
Torque reference P = K
VLN ×
Speed tolerance
Yes %/Hz 30
1
C1 04
Speed Control
Integral Time
Constant (M, L)
Speed control integral time constant when low-speed gear is selected
(i.e., MGR or LGR is ON) or when low-speed winding is selected (i.e.,
CHW is ON). Yes ms 600
1000
C1-04 Constant (M, L)
τ
VLN
CHW is ON).
Reducing τ
VLN
quickens response.
Torque reference I = Torque reference P
×
Time/τ
VLN
Yes ms 600
5
C1 05
Speed Control
Proportional
G i (H)
Speed proportional gain when high-speed gear is selected (i.e., MGR and
LGR are OFF) or when high-speed winding is selected (i.e., CHW is
OFF) i d (i SV i ON) Yes %/Hz 40
255
C1-05
p
Gain (H)
K
VHS
) g p g ( ,
OFF) in servo mode (i.e., SV is ON).
Torque reference P = K VHS × Speed tolerance
Yes %/Hz 40
1
C1 06
Speed Control
Integral Time
C (H)
Speed control integral time constant when high-speed gear is selected
(i.e., MGR and LGR are OFF) or when high-speed winding is selected
(i CHW i OFF) i d (i SV i ON) Yes ms 100
1000
C1-06
g
Constant (H)
τ
VHS
( , ) g p g
(i.e., CHW is OFF) in servo mode (i.e., SV is ON).
Torque reference I = Torque reference P
×
Time/τ VHS
Yes ms 100
5
C1 07
Speed Control
Proportional
G i (M L)
Speed control proportional gain when low-speed gear is selected (i.e.,
MGR or LGR is ON) or when low-speed winding is selected (i.e., CHW
i ON) i d (i SV i ON) Yes %/Hz 40
255
C1-07
p
Gain (M, L)
K
VLS
) p g ( ,
is ON) in servo mode (i.e., SV is ON).
Torque reference P = K
VLS ×
Speed tolerance
Yes %/Hz 40
1
C1 08
Speed Control
Integral Time
C (M L)
Speed control integral time constant when low-speed gear is selected
(i.e., MGR or LGR is ON) or when low-speed winding is selected (i.e.,
CHW i ON) i d (i SV i ON) Yes ms 100
1000
C1-08
g
Constant (M, L)
τ
VLS
( , ) p g ( ,
CHW is ON) in servo mode (i.e., SV is ON).
Torque reference I = Torque reference P
×
Time/τ
VLS
Yes ms 100
5
C1 09
Torque Refer-
ence
Filter Time
Time constant of low-pass filter for torque reference for gear chattering
noise. Increasing the time constant may cause run-away depending on
conditions Yes ms 1 0
5.0
C1-09 Filter Time
Constant
τ
T
conditions. Yes ms 1.0
0.0
C1 10
Soft Start Time
Setting T
SFS
Setting of time required for soft starter. Variations in speed references are
suppressed according to the speed change ratio of the set time. Starting
i f i b i d f ll Yes sec 0 1
180.0
C1-10
g
SFS
pp g p g g
time from at rest state is obtained as follows:
Starting time = T
SFS ×
Speed reference (%)/100
Yes sec 0.1
0.1
C1 11 * 2
Speed Refer-
ence Offset Ad-
Offset adjustment to analog reference. Set the value of U1-15 when oper-
ating using speed reference 0 in C1-11.
Yes 0
80
C1-11 * 2
ence Offset Ad
justment Value
SC OFS
ating using speed reference 0 in C1 11.
Yes --- 0
−80
C1 12 * 2
Motor Speed
Adjustment Val-
Constant to adjust motor speed over analog speed reference. When the
value of S
ADJ
increases, speed increases, and when the value of S
ADJ
Yes 1 0000
1.1000
C1-12 * 2
Adjustment Val
ue
S
ADJ
value of S
ADJ
increases, speed increases, and when the value of S
ADJ
decreases, speed decreases. Disabled when using digital speed reference.
Yes --- 1.0000
0.9000
10