Yaskawa AC Drive-P1000 Industrial Fan - Manual (Page 217)

L4-02
Frequency
detection 1
ON OFF
L4-02
L4-01
L4-01
Output Frequency
or Motor Speed
Figure 5.49 Frequency Detection 1 Time Chart
Refer to L4-01, L4-02: Speed Agreement Detection Level and Detection Width on page 252 for more details.
Setting 5: Frequency Detection 2
The output closes when the output frequency is above the detection level set in L4-01. The terminal remains closed until the
output frequency or motor speed fall below L4-01 minus the setting of L4-02.
Status Description
Open Output frequency or motor speed is below L4-01 minus L4-02 or has not exceeded L4-01.
Closed Output frequency or motor speed exceeded L4-01.
Note: Frequency detection works in forward and reverse. The value of L4-01 is used as the detection level for both directions.
L4-02
Frequency
Detection 2
ON OFF
L4-02
L4-01
L4-01
Output Frequency
or Motor Speed
Figure 5.50 Frequency Detection 2 Time Chart
Refer to L4-01, L4-02: Speed Agreement Detection Level and Detection Width on page 252 for more details.
Setting 6: Drive Ready
The output closes when the drive is ready to operate the motor. The terminal will not close under the conditions listed below,
and any Run commands will be disregarded.
• When the power is shut off
• During a fault
• When the internal power supply of the drive has malfunctioned
• When a parameter setting error makes it impossible to run
• Although stopped, an overvoltage or undervoltage situation occurs
• While editing a parameter in the Programming Mode (when b1-08 = 0)
Setting 7: DC Bus Undervoltage
The output closes when the DC bus voltage or control circuit power supply drops below the trip level set in L2-05. A fault in
the DC bus circuit will also cause the terminal set for “DC bus undervoltage” to close.
Status Description
Open DC bus voltage is above the level set to L2-05.
Closed DC bus voltage has fallen below the trip level set to L2-05.
5.7 H: Terminal Functions
YASKAWA SIEP YAIP1U 01B AC Drive - P1000 Technical Manual 217
5
Parameter Details