LSIS LSLV0055H100-4COFN - Page 160

Learning Advanced Features
146
Code
Description
Gain
frequency.
IN-65–71 Px
Define
Set one of the multi-function input terminals to 36 (dis Aux Ref) and turn it
on to disable the auxiliary frequency reference. The inverter will operate
using the main frequency reference only.
Auxiliary Reference Operation Ex #1
Keypad Frequency Setting is Main Frequency and V1 Analog Voltage is Auxiliary
Frequency
• Main frequency: Keypad (operation frequency 30 Hz)
• Maximum frequency setting (DRV-20): 400 Hz
• Auxiliary frequency setting (BAS-01): V1[Display by percentage(%) or auxiliary frequency
(Hz) depending on the operation setting condition]
• Auxiliary reference gain setting (BAS-03): 50%
• IN-01–32: Factory default
Example: an input voltage of 6 V is supplied to V1, and the frequency corresponding to 10 V
is 60 Hz. The table below shows the auxiliary frequency A as 36 Hz[=60 Hz X (6 V/10 V)] or
60%[= 100% X (6 V/10 V)].
Setting *
Calculating final command frequency**
0
M[Hz]+(G[%]*A[Hz])
30 Hz(M)+(50%(G)x36 Hz(A))=48 Hz
1
M[Hz]*(G[%]*A[%])
30 Hz(M)x(50%(G)x60%(A))=9 Hz
2
M[Hz]/(G[%]*A[%])
30 Hz(M)/(50%(G)x60%(A))=100 Hz
3
M[Hz]+{M[Hz]*(G[%]*A[%])}
30 Hz(M)+{30[Hz]x(50%(G)x60%(A))}=39 Hz
4
M[Hz]+G[%]*2*(A[%]-50[%])[Hz]
30 Hz(M)+50%(G)x2x(60%(A)–50%)x60 Hz=36
Hz
5
M[HZ]*{G[%]*2*(A[%]-50[%])}
30 Hz(M)x{50%(G)x2x(60%(A)–50%)}=3 Hz
6
M[HZ]/{G[%]*2*(A[%]-50[%])}
30 Hz(M)/{50%(G)x2x(60%–50%)}=300 Hz
7
M[HZ]+M[HZ]*G[%]*2*(A[%]-
50[%])
30 Hz(M)+30 Hz(M)x50%(G)x2x(60%(A)–
50%)=33 Hz
* M: main frequency reference (Hz or rpm)/G: auxiliary reference gain (%)/A: auxiliary
frequency reference (Hz or rpm) or gain (%).
**If the frequency setting is changed to rpm, it is converted to rpm instead of Hz.