Raising And Lowering Frequency References Using Contact Signals (Up/Down) - YASKAWA FSDrive-MV1S Instructions Manual

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 S16.
To use this function, set one of the constants H1-03 to H1-16 (multi-function contact input terminal S3 to S16
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
Constant
Number
Display
Frequency reference
upper limit
d2-01
Ref Upper Limit
Frequency reference
lower limit
d2-02
Ref Lower Limit
Precautions
When setting and using UP and DOWN commands, observe the following precautions.
Setting Precautions
If multi-function input terminals S3 to S16 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.
•
UP/DOWN commands and Acceleration/Deceleration Ramp Hold have been allocated at the same time.
•
Application Precautions
Frequency outputs using UP/DOWN commands are limited by the frequency reference upper and lower
•
limits set in constants d2-01 to d2-02. Here, frequency references from analog frequency reference termi-
nal AI1 becomes the frequency reference lower limit. If using a combination of the frequency reference
from terminal AI1 and the frequency reference lower limit set in either constant d2-02 or d2-02, the larger
lower limit will become the frequency reference lower limit.
If inputting the Run Command when using UP/DOWN commands, the output frequency accelerates to the
•
frequency reference lower limit.
When using UP/DOWN commands, multi-step operations are disabled.
•
Setting
Description
Range
Set the output frequency upper
limit as a percent, taking the 0.0 to
max. output frequency to be 110.0
100%.
Sets the output frequency lower
0.0 to
limit as a percentage of the
109.0
maximum output frequency.
Input Terminal Functions
Control Meth-
Change
ods
Factory
during
Open-
Setting
Flux
Operation loop
Vector
Vector
100.0% No A
0.0% No A
MEMOBUS
Register
A 2E0H
A 2E1H
45
6-