Omron SYSDRIVE 3G3EV User Manual page 53

Preparing for Operation
n39
Frequency Reference Gain
Setting range 0.10 to 2.55
Unit of setting 0.01 (times)
n40
Frequency Reference Bias
Setting range –99 to 99 (%)
Unit of setting 1 (%)
•These constants are used to set the relationship between analog voltage and refer-
ence frequencies when frequency references are input through control terminals FR
and FC.
•Frequency reference gain (n39): Specify the input voltage corresponding to the maxi-
mum frequency (n24) as a multiple of 10 V.
•Frequency reference bias (n40): Specify the reference frequency corresponding to in-
put voltage 0 V as a percentage of the maximum frequency (n24).
Explanation of Frequency Reference Gain and Bias
Reference frequency
Maximum frequency
Bias setting
Example of Setting:
Operating the Inverter so that the Maximum Frequency is Reached when
the Voltage Increases from 0 to 5 V
Reference frequency
4-22
(times)
Gain setting = 10 V x (n39 setting)
Bias setting = Maximum frequency x (n40 setting)/100
Gain setting
Maximum frequency
Factory setting 1.00 (times)
Factory setting 0 (%)
Input voltage
Settings:
n39 = 0.50 (times)
n40 = 0 (%)
Input voltage
Chapter 4