Raising And Lowering Frequency References Using Contact Signals (Up/Down) - Omron VARISPEED G7 Instruction Manual

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
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performing operations using this frequency after the Inverter 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 Inverter frequency references by turning ON and OFF a multi-
function contact input terminal S3 to S7.
To use this function, set one of the constants 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 Constants
Name
Con-
stant
Display
Number
Frequency ref-
erence upper
Set the output frequency upper
limit
d2-01 limit as a percent, taking the max.
output frequency to be 100%.
Ref Upper
Limit
Frequency ref-
erence lower
Sets the output frequency lower
limit
d2-02 limit as a percentage of the maxi-
mum output frequency.
Ref Lower
Limit
Master speed
Set the master speed reference
reference lower
lower limit as a percent, taking
limit
d2-03
the max. output frequency to be
Ref1 Lower
100%.
Limit
Precautions
When setting and using UP and DOWN commands, observe the following precautions.
Setting Precautions
If multi-function input terminals S3 to S12 are set as follows, operation error OPE03 (Invalid multi-function
input selection) will occur:
Only either the UP command or DOWN command has been set.
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Setting
Description
Range
0.0 to
110.0
0.0 to
110.0
0.0 to
110.0
Input Terminal Functions
Control Methods
Change
Factory during
V/f
Setting Opera-
V/f with
tion
PG
100.0% No A A
0.0% No A A
0.0% No A A
Open Open
Flux
Loop Loop
Vec-
Vector Vector
tor
1 2
A A A
A A A
A A A
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