BENSHAW RSi GM2 Series - Page 107

Learning Advanced Features
890054-00-00
GM2 Series VFD
97
Setting*
Calculating final reference frequency
0
M[Hz]+(G[%]*A[Hz])
30 Hz(M)+(50%(G)x24 Hz(A))=42 Hz
1
M[Hz]*(G[%]*A[%])
30 Hz(M)x(50%(G)x40%(A))=6 Hz
2
M[Hz]/(G[%]*A[%])
30 Hz(M)/(50%(G)x40%(A))=150 Hz
3
M[Hz]+{M[Hz]*(G[%]*A[%])}
30 Hz(M)+{30[Hz]x(50%(G)x40%(A))}=36 Hz
4
M[Hz]+G[%]*2*(A[%]-50[%])[Hz]
30 Hz(M)+50%(G)x2x(40%(A)–50%)x60 Hz=24 Hz
5
M[HZ]*{G[%]*2*(A[%]-50[%])
30 Hz(M)x{50%(G)x2x(40%(A)–50%)} = -3 Hz(Reverse)
6
M[HZ]/{G[%]*2*(A[%]-50[%])}
30 Hz(M)/{50%(G)x2x(60%–40%)} = -300 Hz(Reverse)
7
M[HZ]+M[HZ]*G[%]*2*(A[%]-50[%])
30 Hz(M)+30 Hz(M)x50%(G)x2x (40%(A)–50%)=27 Hz
* M: Main frequency reference/ G: Auxiliary reference gain (%)/ A: Auxiliary frequency
reference (Hz or rpm) or gain (%)
Auxiliary Reference Operation E.g. #3
V1 is Main Frequency and I2 is Auxiliary Frequency
• Main frequency: V1 (frequency command setting to 5 V and is set to 30 Hz)
• Maximum frequency setting (dr.20): 400 Hz
• Auxiliary frequency (bA.01): I2[Display by percentage (%) or auxiliary frequency (Hz) depending on
the operation setting condition]
• Auxiliary reference gain (bA.03): 50%
• In.01-32: Factory default output
Example: an input current of 10.4 mA is applied to I2, with the frequency corresponding to 20 mA of
60 Hz. The table below shows auxiliary frequency A as 24 Hz(=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 reference frequency
0
M[Hz]+(G[%]*A[Hz])
30 Hz(M)+(50%(G)x24 Hz(A))=42 Hz
1
M[Hz]*(G[%]*A[%])
30 Hz(M)x(50%(G)x40%(A))=6 Hz
2
M[Hz]/(G[%]*A[%])
30 Hz(M)/(50%(G)x40%(A))=150 Hz
3
M[Hz]+{M[Hz]*(G[%]*A[%])}
30 Hz(M)+{30[Hz]x(50%(G)x40%(A))}=36 Hz
4
M[Hz]+G[%]*2*(A[%]-50[%])[Hz]
30 Hz(M)+50%(G)x2x(40%(A)–50%)x60 Hz=24 Hz
5
M[HZ]*{G[%]*2*(A[%]-50[%])}
30 Hz(M)x{50%(G)x2x(40%(A)–50%)}=-3 Hz(Reverse)
6
M[HZ]/{G[%]*2*(A[%]-50[%])}
30 Hz(M)/{50%(G)x2x(60%–40%)}=-300 Hz(Reverse)
7
M[HZ]+M[HZ]*G[%]*2*(A[%]-50[%])
30 Hz(M)+30 Hz(M)x50%(G)x2x(40%(A)–50%)=27 Hz
* M: Main frequency reference/ G: Auxiliary reference gain (%)/ A: Auxiliary frequency
reference (Hz or rpm) or gain (%)