Allen-Bradley 2-D Manual do Utilizador descarregar pdf (Página 87)

Programming

5-18

Advanced Setup Group (continued)

[

oos

Parameter # 9 Factory Default ‘‘Break Point”

[

oos

Parameter Type Read & Write

This parameter sets the level of DC boost at low

frequencies. It also selects special Volts-per-Hz patterns.

Units Text Settings ‘‘No Boost”

‘‘6 Volts”

‘‘12 Volts”

‘‘18 Volts’’

‘‘24 Volts’’

‘‘30 Volts’’

‘‘36 Volts’’

‘‘42 Volts’’

‘‘48 Volts’’

‘‘Break Point’’

‘‘Run Boost’’

‘‘Fan Sel #1’’

‘‘Fan Sel #2”

See Figure 5.8

See Figure 5.7

See Figure 5.10

See Figure 5.9

[Base Voltage]

[Base Frequency]

Figure 5.8 Standard Boost Volts-per-Hz Pattern

Motor Rated '

[Maximum Voltage]

[Maximum Frequency]

Motor Rated

Voltage

Frequency

Active when [DC Boost Select] is set to ‘‘No Boost” or ‘‘6 Volts” through ‘‘48 Volts.”

No Boost

[Base Voltage]

[Base Frequency]

Voltage

1/2 Base Frequency

35% Base Voltage

Fan Sel #2

a Fan Select #1

45% Base Voltage

Figure 5.9 Fan/Pump Volts-per-Hz Pattern

These patterns are active only when [DC Boost Select] is set to ‘‘Fan Sel #1” or

‘‘Fan Sel #2.”

[Maximum Voltage]

[Maximum Frequency]

1 2 ... 82 83 84 85 86 87 88 89 90 91 92 ... 171 172

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