Yaskawa G7 Drive - Manual (Page 292)

Input Terminal Functions
6-
75
‹ Accelerating and Decelerating Constant Frequencies in the Analog Refer-
ences (+/- Speed)
The +/- speed function increments or decrements the frequency set in analog frequency reference d4-02 (+/-
Speed Limit) using two contact signal inputs.
To use this function, set One of the parameters H1-01 to H1-10 (multi-function contact terminal inputs S3 to
S12 function selection) to 1C (Trim Control Increase command) and 1D (Trim Control Decrease command).
Be sure to allocate two terminals so that the Trim Control Increase command and Trim Control Decrease com-
mand can be used as a pair.
„ Related Parameters
„ Trim Control Increase/Decrease Command and Frequency Reference
The frequency references using Trim Control Increase/Decrease command ON/OFF operations are shown
below.
„ Application Precautions
• Trim Control Increase/Decrease command is enabled when speed reference > 0 and the speed reference is
from an analog input.
• When the analog frequency reference value - d4-02 < 0, the frequency reference is set to 0.
• If only the Trim Control Increase command or Trim Control Decrease command has been set for a multi-
function contact input terminal S3 to S12, operation error OPE03 (invalid multi-function input selected)
will occur.
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
d4-02
Trim Control
Level Sets the amount of frequency
reference to be added or
subtracted as a percentage of
maximum output frequency
(E1-04) when multi-function
inputs “trim control increase” and
“trim control decrease” are
selected (H1-XX = 1C and 1D).
0 to 100 10% No A A A A A
Trim Control
Lvl
Frequency Reference
Set Frequency
Reference
+ d4-02
Set Frequency
Reference
- d4-02
Set Frequency Command
Trim Control Increase
Command Terminal
ON OFF ON OFF
Trim Control Decrease
Command Terminal
OFF ON ON OFF