YASKAWA Varispeed f7, Programming Manual

Page: 97 / 202

Programming 89
Function: Frequency Detect 1
Setting: 4
A “Freq Detect 1” output will be closed whenever the output frequency is equal to or below the value of the programmed
Speed Agree Level (L4-01). The Speed Agree Width (L4-02) is the hysteresis to the Freq Detect 1 function. Whenever the
output frequency approaches the Speed Agree Level while accelerating it will need to be equal to or exceed the Speed Agree
Level (L4-01) plus the Speed Agree Width (L4-02) before the Freq Detect 1 output will energize.
As the output frequency approaches the Speed Agree Level while decelerating, the Freq Detect 1 output will de-energize
exactly at the Speed Agree Level.
The Freq Detect 1 function is effective during both forward and reverse operation.
Fig. 57 Freq Detect 1 Timing Diagram
Function: Frequency 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 de-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. 58 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 Undervoltage
Setting: 7
Frequency
Detection Signal
Output
Frequency
t
a
a
- Detection Width (L4-02)
L4-01
Detection 1 Signal
ON (CLOSED)
OFF(OPEN)
a - Speed Agree Width (L4-02)
a
t
TIME
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