LSIS LSLV-S100 - Page 138

124
Learning Advanced Features
Code
Description
bA.03 Aux Ref Gain
Adjust the size of the input (bA.01 Aux Ref Src) configured for auxiliary
frequency.
In.65–71 Px Define
Set one of the multi-function input terminals to 40(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 30Hz)
• Maximum frequency setting (dr.20): 400Hz
• Auxiliary frequency setting (bA.01): V1[Display by percentage(%) or auxiliary frequency (Hz)
depending on the operation setting condition]
• Auxiliary reference gain setting (bA.03): 50%
• In.01–32: Factory default
Example: an input voltage of 6V is supplied to V1, and the frequency corresponding to 10V is 60Hz.
The table below shows the auxiliary frequency A as 36Hz[=60Hz X (6V/10V)] or 60%[= 100% X
(6V/10V)].
Setting*
Calculating final command frequency**
0
M[Hz]+(G[%]*A[Hz])
30Hz(M)+(50%(G)x36Hz(A))=48Hz
1
M[Hz]*(G[%]*A[%])
30Hz(M)x(50%(G)x60%(A))=9Hz
2
M[Hz]/(G[%]*A[%])
30Hz(M)/(50%(G)x60%(A))=100Hz
3
M[Hz]+{M[Hz]*(G[%]*A[%])}
30Hz(M)+{30[Hz]x(50%(G)x60%(A))}=39Hz
4
M[Hz]+G[%]*2*(A[%]-50[%])[Hz]
30Hz(M)+50%(G)x2x(60%(A)–50%)x60Hz=36Hz
5
M[HZ]*{G[%]*2*(A[%]-50[%])}
30Hz(M)x{50%(G)x2x(60%(A)–50%)}=3Hz
6
M[HZ]/{G[%]*2*(A[%]-50[%])}
30Hz(M)/{50%(G)x2x(60%–50%)}=300Hz
7
M[HZ]+M[HZ]*G[%]*2*(A[%]-50[%])
30Hz(M)+30Hz(M)x50%(G)x2x(60%(A)–50%)=33Hz
*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.