6-58
Trim Control Function (+/– Speed)
The +/– speed function increments or decrements the frequency reference from analog input by the value set
in constant d4-02 (+/– Speed Limit) using two digital inputs.
To use this function, set two of the constants H1-01 to H1-05 (multi-function contact terminal inputs S3 to S7
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 are used as a pair. Otherwise an OPE03 alarm will be displayed.
Related Constants
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
source is an analog input (A1 or A2).
• When the analog frequency reference value - d4-02 < 0, the frequency reference is set to 0.
• If only one of the Trim Control Increase command or Trim Control Decrease command has been set for a
multi-function contact input terminal, operation error OPE03 (invalid multi-function input selected) will
occur.
Con-
stant
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
d4-02 +/- speed limits
Set the frequency to be add to or subtracted from the ana-
log frequency reference as a percent, taking the maximum
output frequency to be 100%.
Enabled when the increase (+) speed command or decrease
(-) speed command is set for a multi-function input.
0 to 100 10% No A
Frequency Reference
Set Frequency
Reference
+ d4-02
Set Frequency
Reference
- d4-02
HOLD
Trim Control Increase
Command Terminal
ON OFF ON OFF
Trim Control Decrease
Command Terminal
OFF ON ON OFF
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
Need help?
General