Yaskawa Matrix Converter - Manual (Page 238)

Input Terminal Functions
6-
73
‹ Accelerating and Decelerating Parameter Frequencies in the Analog Ref-
erences (+/- Speed)
The +/- speed function increments or decrements the frequency set in analog frequency reference d4-02 (Trim
Control Level) using two contact signal inputs.
To use this function, set one of the parameters H1-01 to H1-10 (Terminal S3 to S12 Function Selection) to 1C
(Trim Control Increase Command) and 1D (Trim Control Decrease Command). Be sure to allocate two termi-
nals so that the Trim Control Increase Command and Trim Control Decrease Command 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 digital input terminal S3 to S12, operation error OPE03 (invalid multi-function input selected)
will occur.
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector
d4-02
Trim Control Level Set the frequency to be added to or subtracted
from the analog frequency reference as a per-
cent, taking the maximum output frequency to
be 100%.
Enabled when the increase (+) speed com-
mand or decrease (-) speed command is set
for a multi-function input.
0 to 100 10% No 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