YASKAWA E7U, Руководство по программированию

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Programming 65
Function: Freq Detect 2
Setting: 5
A Freq Detect 2 output will be closed whenever the output frequency is equal to or above the value of the programmed Speed
Agree Level (L4-01). The Speed Agree Width (L4-02) is the hysteresis to the Freq Detect 2 function. Whenever the output
frequency approaches the Speed Agree Level (L4-01) while accelerating it will energize exactly at the Speed Agree Level.
As the output frequency approaches the Speed Agree Level while decelerating, the Freq Detect 2 output will
de-energize when the output frequency is equal to or below the Speed Agree Level (L4-01) minus the Speed Agree Width
(L4-02).
The Freq Detect 2 function is effective during both forward and reverse operation.
Fig. 43 Freq Detect 2 Timing Diagram
Function: Inverter Ready
Setting: 6
The Inverter Ready output will be closed whenever the Drive is not in a fault state and not being programmed. If b1-08 = “1:
Enabled”, a Drive that is in an active Run state that is also being programmed will have the Inverter Ready output closed.
Function: DC Bus Undervolt
Setting: 7
The DC Bus Undervolt output will close whenever the main circuit DC Bus voltage or control circuit power supply drop
below their respective trip level. The undervoltage trip level is determined by parameter L2-05. An open soft charge contactor
answer back signal will also cause the DC Bus Undervolt output to close.
Function: BaseBlk 1
Setting: 8
A BaseBlk 1 programmed output will close to indicate that the Drive is in baseblocked state. While in a baseblock state the
Drive’s output transistors are prevented from firing. A BaseBlk 1 output contact can also serve as notice that the Drive has a
charged DC Bus, no fault and can start at any time.
Function: Option Reference
Setting: 9
When an output is configured as an Option Reference output, the output will close to show that the speed command is being
sourced from the digital operator. If the Option Reference output is open, it indicates the speed command is coming from the
control circuit terminals or an optional communications card.
Frequency Detection Signal
Output Frequency
t
a
- Detection Width (L4-02)
a
L4-01
t
a - Speed Agree Width (L4-02)
Frequency Detection 2 Signal
a
OFF(OPEN)
ON (CLOSED)
TIME