YASKAWA E7U Programming Manual page 70

Function: Fref/Fout Agree 1
Setting: 2
The "Fref/Fout Agree 1" output will close whenever the actual output frequency is within the Speed Agree Width (L4-02) of
the current Speed Command regardless of the direction.
Function: Fref/Set Agree 1
Setting: 3
The "Fref/Set Agree 1" output will close whenever the actual output frequency and the Speed Command are within the Speed
Agree Width (L4-02) of the programmed Speed Agree Level (L4-01).
Frequency
Speed Command
Reference
Output Frequency
Frequency/Set Agree 1
Frequency Agree
Signal
Signal
Function: Freq 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 de-energize.
As the output frequency approaches the Speed Agree Level while decelerating, the Freq Detect 1 output will energize exactly at
the Speed Agree Level.
The Freq Detect 1 function is effective during both forward and reverse operation.
Output
Frequency
Frequency
Detection 1 Signal Detection Signal
a
a - Speed Agree Width (L4-02) X2
a
D t ti Width (L4 02) X 2
Fig. 41 Fref/Set Agree 1 Timing Diagram
a a
a - Speed Agree Width (L4-02)
a
- Detection Width (L4-02)
Fig. 42 Freq Detect 1 Timing Diagram
Programming 64
t
Speed Agree Level
(L4-01)
t
t
TIME
L4-01
TIME
ON (CLOSED)
OFF (OPEN)
t
t
ON (CLOSED)
OFF(OPEN)