Yaskawa L1000E AC Drive Technical Manual for CIMR-LE Models for Elevator Applications - Manual (Page 220)

5.8 L: Protection Functions
220 YASKAWA ELECTRIC SIEP YAIL1E 01A YASKAWA AC Drive L1000E Technical Manual
■ L4-03, L4-04: Speed Agreement Detection Level and Detection Width (+/-)
Parameter L4-03 sets the detection level for the digital output functions “Speed agree 2,” “User-set speed agree 2,”
“Speed detection 3,” and “Speed detection 4.”
Parameter L4-04 sets the hysteresis level for these functions.
Refer to H2-01 to H2-05: Terminals M1-M2, M3-M4, M5-M6, P1-PC, and P1-P2 Function Selection on page 197 for
details on settings 13, 14, 15, and 16
■ L4-05: Speed Reference Loss Detection Selection
The drive can detect a loss of an analog speed reference from input A1 and A2. Speed reference loss is detected when the
speed reference falls below 10% of the previous reference, or below 5% of the maximum output frequency within 400 ms.
Figure 5.37
Figure 5.37 Loss of Reference Function
Parameter L4-05 selects the operation when a speed reference loss is detected.
Setting 0: Stop
Drive follows the speed reference (which is no longer present) and simply stops the motor.
Setting 1: Continue operation with reduced speed reference
The drive will continue the operation at the speed reference value set in parameter L4-06. When the external speed
reference value is restored, the operation is continued with the external speed reference.
■ L4-06: Speed Reference at Reference Loss
Sets the speed 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 speed reference before the loss was detected.
■ L4-07: Speed Agree Detection Selection
Determines when speed detection is active using parameters L4-01 through L4-04.
Setting 0: No detection during baseblock
Setting 1: Detection always enabled
No. Parameter Name Setting Range Default
L4-03 Speed Agreement Detection Level (+/-) -100.0 to 100.0% 0.0%
L4-04 Speed Agreement Detection Width (+/-) 0.0 to 40.0% 4.0%
No. Parameter Name Setting Range Default
L4-05 Speed Reference Loss Detection Selection 0 or 1 0
No. Parameter Name Setting Range Default
L4-06 Speed Reference at Reference Loss 0.0 to 100.0% 80.0%
No. Parameter Name Setting Range Default
L4-07 Speed Agree Detection Selection 0, 1 0
100%
400 ms
Analog
speed
reference 10%
common_TMo