Upper And Lower Frequency Reference Limits; Adjusting The Analog Input - Omron SYSDRIVE 3G3JV User Manual

Basic Operation
Set Values
Value
0 The FREQ adjuster of the Digital Operator is enabled. (see note 1)
1 Key sequences on the Digital Operator are enabled. (see note 2)
Note 1. The maximum frequency (FMAX) is set when the FREQ adjuster is set to MAX.
Note 2. The frequency reference can be set with key sequences while the FREF indicator is lit or with
the set value in n21 for frequency reference 1. In either case, the value is set in n21.

5-5-2 Upper and Lower Frequency Reference Limits

Regardless of the methods of operation mode and frequency reference input, the upper
and lower frequency reference limits can be set.
H Setting the Frequency Reference Upper and Lower Limits (n30 and
n31)
• Set the upper and lower frequency reference limits as percentage based on the maximum frequency
as 100%.
n30
Frequency Reference Upper Limit
Setting 0% to 110%
range (Max. frequency = 100%)
n31
Frequency Reference Lower Limit
Setting 0% to 110%
range (Max. frequency = 100%)
Note If n31 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.

5-5-3 Adjusting the Analog Input

Input characteristic adjustments may be necessary for analog frequency references to
be input. At that time, use the following parameters for gain, bias, and filter time parame-
ter adjustments.
H FR Terminal Adjustments for Frequency Reference Input
D Gain and Bias Settings (n41 and n42)
• Set the input characteristics of analog frequency references in n41 (for the frequency reference gain)
and n42 (for the frequency reference bias).
• Set the frequency of maximum analog input (10 V or 20 mA) in n41 as percentage based on the maxi-
mum frequency as 100%.
• Set the frequency of minimum analog input (0 V, 0 mA, or 4 mA) in n42 as percentage based on the
maximum frequency as 100%.
n41
Frequency Reference Gain
Setting 0% to 255%
range (Max. frequency = 100%)
Description
Unit of 1%
setting
Unit of 1%
setting
Unit of 1%
setting
Chapter 5
Changes during No
operation
Default setting 100
Changes during No
operation
Default setting 0
Changes during Yes
operation
Default setting 100
5-9