Rockwell Automation 1305 AC Drive, Firmware 1.01-3.00 User Manual - Manual (Page 84)

Chapter 5 – Programming
5-16
Advanced Set Up Group (cont.)
[Break Voltage] Parameter # 50 Factory Default 0 Volts [Break Voltage]
Parameter Type Read & Write Minimum 0 Volts
This parameter sets the voltage the drive will output at
[Break Frequency]. Combined with [Break Frequency],
this value determines the Volts-per-Hz ratio between 0 and
[Break Frequency]. IMPORTANT: [DC Boost Select]
must be set to ‘‘Break Point” for this parameter to be
active. Units 1 Volt Maximum 50% of Max. Drive Rated Volts
[Maximum Voltage] Parameter # 20 Factory Default Max. Drive Rated Volts [Maximum Voltage]
Parameter Type Read & Write Minimum 25% of Max. Drive Rated Volts
This parameter sets the highest voltage the drive will
output. Units 1 Volt Maximum 100% of Max. Drive Rated Volts
[Base Voltage]
[Base Frequency]
Maximum ' a [Maximum Voltage]
[Maximum Frequency]
b
y
Motor Rated Maximum
0 –
0
Voltage
Frequency
b
[Break Voltage]
[Break Frequency]
Start Boost '
y
Motor Rated '
Figure 5.7 Custom Volts-per-Hz Pattern
This pattern is active only when
[DC Boost Select] is set to
‘‘Break Point.”
The following guidelines should be followed when setting up
a custom Volts-per-Hz curve:
1. [Maximum Voltage] must be greater than [Base Voltage].
2. [Base Voltage] must be greater than [Start Boost].
3. If [DC Boost Select] is set to “Break Point” then:
[Base Voltage] must be greater than [Break Voltage] and
[Break Voltage] must be greater than [Start Boost].