Output
frequency
L4-02
Frequency
detection 1
ON
OFF
L4-02
L4-01
L4-01
Figure 5.57 Frequency Detection 1 Time Chart
Refer to L4-01/02: Speed Agreement Detection Level and Detection Width on page 197 for details on setting the detection
width.
Setting 5: Frequency Detection 2
Output closes whenever the output frequency is equal to or above the detection level set in L4-01. The output opens when
the output frequency falls below L4-01 minus the hysteresis set in L4-02.
Status Description
Open Output frequency is below L4-01 minus L4-02 or has not exceeded L4-01.
Closed Output frequency exceeded L4-01.
Note: The detection works in both forward and reverse. The value of L4-01 will be used as the detection level for both directions.
Output
frequency
L4-02
Frequency
Detection 2
ON
OFF
L4-02
L4-01
L4-01
Figure 5.58 Frequency Detection 2 Time Chart
Refer to L4-01/02: Speed Agreement Detection Level and Detection Width on page 197 for details on setting the detection
width.
Setting 6: Drive Ready
Output closes whenever the drive is ready to operate the motor.
Status Description
Open During power up, initialization, fault or in Programming Mode (while b1-08 = 0 or 2).
Closed Drive is ready for operation.
Refer to b1-08: Run Command Selection while in Programming Mode on page 108 for details on the setting of b1-08.
Setting 7: DC Bus Undervoltage
Output closes whenever the DC bus voltage or control circuit power supply drops below the trip level. The undervoltage
trip level is determined by L2-05. A fault in the DC bus charge circuit will also cause the DC Bus Undervoltage output 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 (N.O.)
Output closes to indicate that the drive is in a baseblock state. While Baseblock is executed, output transistors are not
switched and no voltage will be output.
5.7
H: Terminal Functions
172
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
7/16/2008-13:23
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