YASKAWA A1000 Technical Manual page 249

Setting 5: Frequency Detection 2
Output closes whenever the output frequency or motor speed (CLV, CLV/PM) is above the detection level set in L4-01.
The terminal remains closed until the output frequency or motor speed falls below L4-01 minus the setting of L4-02.
Status
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 both forward and reverse. The value of L4-01 is used as the detection level for both directions.
Figure 5.73
Output Frequency
Frequency
Detection 2
Refer to L4-01, L4-02: Speed Agreement Detection Level and Detection Width on page 288
Setting 6: Drive ready
Output closes whenever 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 drive's internal power supply 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
Output closes whenever 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 to set for "DC bus undervoltage" to close.
Status
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 (N.O.)
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.
Status
Open Drive is not in a baseblock state.
Closed Baseblock is being executed.
Setting 9: Frequency reference source
A digital output programmed for this function shows the frequency reference source that is currently selected.
Status
Open Frequency reference is provided from External reference 1 (b1-01) or External reference 2 (b1-15)
Closed Frequency reference is being sourced from the digital operator.
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
or Motor Speed
OFF
ON
Figure 5.73 Frequency Detection 2 Time Chart
Description
L4-02
L4-01
Description
Description
Description
5.7 H: Terminal Functions
L4-01
L4-02
for more details.
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