
Rockwell Automation Publication 750-PM001J-EN-P - October 2014 111
Drive Port 0 Parameters Chapter 3
Drive (Port 0) Speed Control
File
File
Group
No. Display Name
Full Name
Description
Values
Read-Write
Data Type
SPEED CONTROL
Speed Limits
520 Max Fwd Speed
Maximum Forward Speed
Sets the forward speed high limit. Refer to P524 [Overspeed Limit].
Units:
Default:
Min/Max:
Hz
RPM
P27 [Motor NP Hertz]
P28 [Motor NP RPM]
Based on [Motor NP Hertz]/[Motor NP RPM]
and Voltage Class / [Motor NP Hertz] x 16.00
Based on [Motor NP Hertz]/[Motor NP RPM]
and Voltage Class / [Motor NP RPM] x 16.00
RW Real
521 Max Rev Speed
Maximum Reverse Speed
Sets the reverse speed high limit. Refer to P524 [Overspeed Limit].
Units:
Default:
Min/Max:
Hz
RPM
P27 [Motor NP Hertz] x –1.00
P28 [Motor NP RPM] x –1.00
[Motor NP Hertz] x –16.00 / 0.00
[Motor NP RPM] x –16.00 / 0.00
RW Real
522 Min Fwd Speed
Minimum Forward Speed
Sets the low limit for speed reference after scaling is applied. Refer to P524 [Overspeed
Limit].
Units:
Default:
Min/Max:
Hz
RPM
0.00
0.00 / [Motor NP Hertz] x 16.00
0.00 / [Motor NP RPM] x 16.00
RW Real
523 Min Rev Speed
Minimum Reverse Speed
Sets the low limit for speed reference after scaling is applied. Refer to P524 [Overspeed
Limit].
Units:
Default:
Min/Max:
Hz
RPM
0.00
[Motor NP Hertz] x –16.00 / 0.00
[Motor NP RPM] x –16.00 / 0.00
RW Real
524 Overspeed Limit
Overspeed Limit
Sets the incremental amount of the output frequency (above maximum speed: either
P520 [Max Fwd Speed] or P521 [Max Rev Speed]) allowable for functions such as slip
compensation.
Units:
Default:
Min/Max:
Hz
RPM
Based on P27 [Motor NP Hertz]/P28 [Motor
NP RPM] and Voltage Class
0.00 / (P27 [Motor NP Hertz] / 3)
0.00 / (P28 [Motor NP RPM] / 6)
RW Real
525 Zero Speed Limit
Zero Speed Limit
Establishes a band around zero speed that is used to determine when the drive considers
the motor to be at zero speed.
Units:
Default:
Min/Max:
Hz
RPM
P27 [Motor NP Hertz] x 0.001
P28 [Motor NP RPM] x 0.001
Based on P27 [Motor NP Hertz]/P28 [Motor
NP RPM] and Voltage Class
RW Real
Frequency
Voltage
Overspeed
Limit
Frequency Trim due to
Speed Control Mode
Max Volts
Motor Volts
Run
Break Volts
Start Boost
Allowable Output Frequency Range -
Normal Operation
Allowable Speed Reference Range
Allowable Output Frequency Range -
Bus Regulation or Current Limit
Max
Freq
Motor
Hz
0 Break
Frequency
Max
Speed
Min
Speed
Output
Freq Limit
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