Omron SYSDRIVE 3G3MV

5-14
n033 Upper Frequency Reference
Limit
Register 0121
Hex
Changes during
operation
No
Setting
range
0% to 110%
(Max. frequency = 100%)
Unit of
setting
1% Default setting 100
n034 Lower Frequency Reference
Limit
Register 0122
Hex
Changes during
operation
No
Setting
range
0% to 110%
(Max. frequency = 100%)
Unit of
setting
1% Default setting 0
Note If n034 is set to a value less than the minimum output frequency (FMIN), the
Inverter will have no output when a frequency reference less than the minimum
output frequency input is ON.
5-6-3 Frequency Referencing by Analog Input
This section explains the methods for referencing frequencies by analog
input,adjustinginputcharacteristics,anddetectinginput commanderrors.
Either the frequency reference control terminal (voltage/current) or multi-
function analog voltage/current input can be used for analog inputs. The
gain,bias,andfiltertimeparameterscanbeusedforadjustments,or,alter-
natively, the adjustments can be made by external analog voltage (cur-
rent), using the multi-function analog inputs.
H Setting Frequency References by Analog Input
· Analog inputs can be set only in remote mode. Set parameter n004 (frequency refer-
ence selection) toanyof the following:2 to 4(frequency referencecontrol terminal), 7
(multi-function analog voltage input), or 8 (multi-function analog current input).
Note If the frequency reference control terminal is to be used forcurrent inputs, the SW2 set-
ting must be changed from V to I. Please, also refer to page 2-17.
H FR Terminal Adjustments for Frequency Reference Input
D Gain and Bias Settings (n060 and n061)
·Settheinputcharacteristicsofanalogfrequencyreferencesinn060(forthefrequency
reference gain) and n061 (for the frequency reference bias).
·Set the frequency of maximum analog input (10 V or 20 mA) in n41 as percentage
based on the maximum frequency as 100%.
Example: In order to obtain the maximum frequency at 5 V, set the value to 200%
because 10-V input is 200% maximum frequency.
Basic Operation Chapter 5