Yaskawa F7 Drive Programming Manual - Manual (Page 98)

Programming 90
The DC Bus Undervoltage 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 Undervoltage output to close.
Function: Base Block 1 N.O.
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: Operator Reference
Setting: 9
When an output is configured as an Operator Reference output, the output will close to show that the frequency reference is
being sourced from the digital operator. If the Operator Reference output is open, it indicates the frequency reference is
coming from the control circuit terminals or an optional communications card.
Function: Local/Remote Operation
Setting: A
When an output is configured as a Local/Remote Operation output, the output will close to show that the Run command is
being sourced from the digital operator. If the Local/Remote Operation output is open, it indicates the Run command is
coming from the control circuit terminals or an optional communications board.
Function: Torque Detection 1 N.O.
Setting: B
The Torque Detection 1 function ties a digital output to the overtorque/undertorque sensing capabilities of the Drive. If a
digital output is configured as Torque Detection 1 N.O., whenever the output current differs from the level of L6-02 for at least
the length of time set in L6-03, the digital output will close.
The torque detection function has a built-in hysteresis of 10% of the Drive rated output current.
Fig. 59 Torque Detection 1 N.O. Timing Diagram
Function: Loss of Reference
Setting: C
The Loss of Reference configured digital output will close when the Drive has detected a loss of the analog frequency reference.
L6-01 = 5,6,7, or 8
L6-02 = TD Level 1
L6-03 = TD Delay Time 1
b = 10% of Drive rated current
Undertorque Detection
Signal
t
L6-03
L6-02
t
Output Current
b
ON (Closed)
OFF (Open)
TIME
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