YASKAWA L1000A Technical Manual page 216

5.8 L: Protection Functions
Figure 5.40
Usage
(%ED)
Figure 5.40 Overload Tolerance for Braking Transistor (CIMR-L 2A0018 to 2A0115, CIMR-L 4A0009 to 4A0060)
■
L8-77: Oscillation Suppression
If speed oscillations with the same frequency as the output frequency occur with an unloaded motor, parameter L8-77 can
be adjusted to suppress these oscillations. While watching the motor speed, increase or decrease L8-77 until the
oscillation disappears.
This parameter rarely requires adjustment.
No.
L8-77
■
L8-88: Safe Disable Operation Mode
Determines the operation performed by the drive when the Safe Disable input is activated.
No.
L8-88
Setting 0: Mode 0
Setting 1: Mode 1
When the Safe Disabled Input is triggered, the operator displays and alarm, and the corresponding output terminal will
react as follows:
Safe Disable Operation
L8-88
0 (mode 0)
1 (mode1)
216
%
Braking Torque = 30%
100
50%
50
8
70%
30
100%
20
5
130%
(%)
10
150%
5
3
2
1 2 5 10
Name
Oscillation Suppression
Name
Safe Disable Operation Mode
Alarm Display during Safety Disable
Selection
Hbb
Hbb
230
90
16
160
58
43
106
270
21
150
67
80 170
29
20 50 100 200
Operation Time (s)
Alarm Output (H2-
ALM flashes
ALM flashes
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
500
760
common_
TMonly
1200
380
600
420
1800
500 1000 2000
Setting Range
–100 to 100
Setting Range
0 or 1
= 10 )
ON
OFF
Default
0
Default
1
Drive Ready
(H2- = 6)
OFF
ON