Yaskawa G7 Drive - Manual (Page 289)

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„ Application Precautions
• When d4-01 is set to 1, the output frequency on hold is stored even after the power supply is turned OFF. If
performing operations using this frequency after the Drive has also been turned OFF, input the run com-
mand with the Acceleration/Deceleration Ramp Hold turned ON.
• When d4-01 is set to 0 and a run command is input while the Acceleration/Deceleration Ramp Hold is
turned ON, the output frequency will be set to zero.
• If you input an Acceleration/Deceleration Ramp Hold command by error when decelerating during posi-
tioning, deceleration may be canceled.
‹ Raising and Lowering Frequency References Using Contact Signals (UP/
DOWN)
The UP and DOWN commands raise and lower Drive frequency references by turning ON and OFF a multi-
function contact input terminal S3 to S7.
To use this function, set one of the parameters H1-01 to H1-10 (multi-function contact input terminal S3 to
S12 function selection) to 10 (UP command) and 11 (DOWN command). Be sure to allocate two terminals so
that the UP and DOWN commands can be used as a pair.
The output frequency depends on the acceleration and deceleration time. Be sure to set b1-02 (Run command
selection) to 1 (Control circuit terminal).
„ Related Parameters
Parameter
Number
Name
Description
Setting
Range Factory
Setting
Change
during
Operation
Control Methods
Display V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vector
Open
Loop
Vector
2
d2-01
Frequency
Reference
Upper Limit
Determines maximum frequency
reference, set as a percentage of
maximum output frequency
(E1-04). If the frequency
reference is above this value,
actual Drive speed will be limited
to this value. This parameter
applies to all frequency reference
sources.
0.0
to
110.0
100.0% No A A A A A
Ref Upper
Limit
d2-02
Frequency
Reference
Lower Limit
0.0
to
110.0
0.0% No A A A A A
Ref Lower
Limit
d2-03
Master Speed
Reference
Lower Limit
0.0
to
110.0
0.0% No A A A A A
Ref1 Lower
Limit