Yaskawa AC Drive Z1000 Bypass Technical Manual - Manual (Page 156)

L4-02
Frequency
detection 1
ON OFF
L4-02
L4-01
L4-01
Output Frequency
or Motor Speed
Figure 5.26 Frequency Detection 1 Time Chart
Setting 5: Frequency Detection 2
The output closes when the output frequency or motor speed 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 5.27 Frequency Detection 2 Time Chart
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.
Setting 8: During Baseblock 1 (N.O.)
The output closes to indicate that the drive is in a baseblock state. While in baseblock, output transistors do not switch and no
main circuit voltage is output.
5.8 H: Terminal Functions
156 YASKAWA ELECTRIC SIEP YAIZ1B 01D YASKAWA AC Drive – Z1000 Bypass Technical Manual