BENSHAW Rsi S Series, Инструкция по эксплуатации

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Learning Advanced Features
124
Auxiliary Reference Operation Ex #3
V1 is Main Frequency and I2 is Auxiliary Frequency
•
Main frequency: V1 (frequency command setting to 5V and is set to 30Hz)
•
Maximum frequency setting (dr.20): 400Hz
•
Auxiliary frequency (bA.03): I2[Display by percentage (%) or auxiliary frequency (Hz) depending
on the operation setting condition]
•
Auxiliary reference gain (bA.05): 50%
•
In.01–32: Factory default
Example: an input current of 10.4mA is applied to I2, with the frequency corresponding to 20mA of
60Hz. The table below shows auxiliary frequency A as 24Hz(=60[Hz]x{(10.4[mA]-4[mA])/(20[mA]-
4[mA])} or 40%(=100[%] x {(10.4[mA] - 4[mA]) /(20 [mA] - 4[mA])}.
Setting* Calculating final command frequency**
0 M[Hz]+(G[%]*A[Hz]) 30Hz(M)+(50%(G)x24Hz(A))=42Hz
1 M[Hz]*(G[%]*A[%]) 30Hz(M)x(50%(G)x40%(A))=6Hz
2 M[Hz]/(G[%]*A[%]) 30Hz(M)/(50%(G)x40%(A))=150Hz
3 M[Hz]+{M[Hz]*(G[%]*A[%])} 30Hz(M)+{30[Hz]x(50%(G)x40%(A))}=36Hz
4 M[Hz]+G[%]*2*(A[%]-50[%])[Hz] 30Hz(M)+50%(G)x2x(40%(A)–50%)x60Hz=24Hz
5 M[HZ]*{G[%]*2*(A[%]-50[%])}
30Hz(M)x{50%(G)x2x(40%(A)
–
50%)}=-3Hz(Reverse)
6 M[HZ]/{G[%]*2*(A[%]-50[%])}
30Hz(M)/{50%(G)x2x(60%
–
40%)}=-300Hz(Reverse)
7 M[HZ]+M[HZ]*G[%]*2*(A[%]-
50[%]) 30Hz(M)+30Hz(M)x50%(G)x2x(40%(A)–50%)=27Hz
* 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.
Note
When the maximum frequency value is high, output frequency deviation may result due to analog
input variation and deviations in the calculations.