Rockwell Automation 1305 AC Drive, Series A and B, Firmware 4.xx-5.xx - Manual (Page 89)

Chapter 5 – Programming
5-17
Advanced Set Up Group (cont.)
[Break Voltage] Parameter # 50 Factory Default See Table [Break Voltage]
Parameter Type Read & Write Minimum 0 Volts 1/2
HP 3/4
HP 1
HP
2
HP
3
HP
5
HP
This parameter sets the voltage the drive will output at
[Break Frequency]. Combined with [Break Frequency],
s v ue de er es e s per H r e ee d
Units 1 Volt Maximum 50% of
Max. Drive
ed s
230V 25
Volts
30
Volts
28
Volts
25
Volts
22
Volts
N/A
this value determines the Volts-per-Hz ratio between 0 and
[Break Frequency]. IMPORTANT: [DC Boost Select]
must be set to ‘‘Break Point” to activate this parameter. Rated Volts
460V 50
Volts
52
Volts
55
Volts
47
Volts
44
Volts
41
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
Volt-
age
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. [Base Voltage] must be greater than [Start Boost].
2. 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].
IMPORTANT:[Maximum Voltage] does not have to be set greater than [Base Voltage], but the maximum drive output is limited
to [Maximum Voltage].