YASKAWA CIMR-VU BA0001 Technical Manual page 228

5.8 L: Protection Functions
To have a fault output trigger when frequency reference loss occurs, set H2-01, H2-02, or H2-03 to "C".
Frequency Reference Loss on page 199
Parameter L4-05 selects the operation when a frequency reference loss is detected.
No.
L4-05
Setting 0: Stop
The drive will stop the motor.
Setting 1: Continue Operation with Reduced Frequency Reference
The drive will continue operation at the frequency reference value set in parameter L4-06. When the external frequency
reference value is restored, the operation is continued with the frequency reference.
n L4-06: Frequency Reference at Reference Loss
Sets the frequency reference level the drive runs with when L4-05 = 1 and a reference loss was detected. The value is set as
a percentage of the frequency reference before the loss was detected.
No.
L4-06
n L4-07: Speed Agreement Detection Selection
Determines when frequency detection is active using parameters L4-01 through L4-04.
No.
L4-07
Setting 0: No Detection During Baseblock
Setting 1: Detection Always Enabled
n L4-08: Speed Agreement Detection Conditions
Note: Parameter available in drive software versions PRG: 1016 and later.
Determines whether soft-starter output or estimated motor speed constitutes a speed agreement situation.
No.
L4-08
Setting 0: Match Speed with the Soft-Starter Output
Setting 1: Match Frequency Reference and Motor Speed
Note: In V/f control the drive ignores the value set to L4-08 and refers to the soft-starter output to determine whether a speed agreement situation
has been reached.
The following functions are influenced by the speed agree condition:
• Overtorque alarms oL3 and oL4 when parameters L6-01 or L6-04 are set to 1, 3, 5, or 7.
• DriveWorksEZ functions that use speed agree output
• The Up 2/Down 2 functions
• Multi-Function Digital Output Settings
228
Analog
frequency
reference
400ms
Loss of
Reference
OFF
output
Figure 5.85 Loss of Reference Function
for details on setting the output function.
Name
Frequency Reference Loss Detection Selection
Name
Frequency Reference at Reference Loss
Name
Speed Agreement Detection Selection
Name
Speed Agreement Detection Conditions
100%
80%
10%
ON
time
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Refer to Setting C:
Setting Range
0 or 1
Setting Range
0.0 to 100.0%
Setting Range
0, 1
Setting Range
0, 1
Default
0
Default
80.0%
Default
0
Default
0