Reference detection: l4 – Yaskawa G7 Drive User Manual
Page 177
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Reference Detection: L4
User parameters for the reference detection function are shown in the following table.
Parameter
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control Methods
MODBUS
Register
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vector
Open
Loop
Vector
2
L4-01
Speed
Agreement
Detection
Level
These parameters configure the
multi-function output (H2-oo)
settings "Fref/Fout Agree 1",
"Fref/Set Agree 1", "Frequency
Detection 1," and "Frequency
detection 2". Parameter L4-01
sets the level while parameter
L4-02 sets the hysteresis for the
Speed Detection Output
Function.
0.0
to
400.0
0.0Hz
No
A
A
A
A
A
499H
Spd Agree
Level
L4-02
Speed
Agreement
Detection
Width
These parameters configure the
multi-function output (H2-oo)
settings "Fref/Fout Agree 1",
"Fref/Set Agree 1", "Frequency
Detection 1," and "Frequency
detection 2". Parameter L4-01
sets the level while parameter
L4-02 sets the hysteresis for the
Speed Detection Output
Function.
0.0
to
20.0
2.0Hz
No
A
A
A
A
A
49AH
Spd Agree
Width
L4-03
Speed
Agreement
Detection
Level (+/-)
These parameters configure the
Multi-Function Output (H2-oo)
settings "Fref/Fout Agree 2",
"Fref/Set Agree 2", "Frequency
Detection 3," or "Frequency
Detection 4". Parameter L4-03
sets the level while parameter
L4-04 sets the hysteresis for the
Speed Detection Output
Function.
-400.0
to
+400.0
0.0Hz
No
A
A
A
A
A
49BH
Spd Agree
Lvl+-
L4-04
Speed
Agreement
Detection
Width (+/-)
These parameters configure the
Multi-Function Output (H2-oo)
settings "Fref/Fout Agree 2",
"Fref/Set Agree 2", "Frequency
Detection 3," or "Frequency
Detection 4". Parameter L4-03
sets the level while parameter
L4-04 sets the hysteresis for the
Speed Detection Output
Function.
0.0
to
20.0
2.0Hz
No
A
A
A
A
A
49CH
Spd Agree
Wdth+-
L4-05
Frequency
Reference
Loss
Detection
Selection
Determines how the Drive will
react when the frequency
reference is lost. The frequency
reference is considered lost
when reference drops 90% or
more of its current value for
400ms.
0: Stop - Drive will stop.
1: Run at L4-06 PrevRef -
Drive will run at the
percentage set in L4-06 of the
frequency reference level at
the time frequency reference
was lost.
0 to 1
0
No
A
A
A
A
A
49DH
Ref Loss
Sel