Speed command file – Rockwell Automation 20B PowerFlex 700 AC Drives Vector Control (v4.001 and up) User Manual
Page 29
Rockwell Automation Publication 20B-UM002G-EN-P - July 2014
29
Programming and Parameters
Chapter 1
Speed Command File
Fi
le
Grou
p
No
.
Parameter Name & Description
See
for symbol descriptions
Values
Re
la
te
d
SPEED C
O
MMAND
Spd Mod
e & Lim
its
079 [Speed Units]
Selects the units to be used for all speed related
parameters. Options 0 & 1 indicate status only. 2
& 3 will convert/configure the drive for that
selection.
“Convert Hz” (2) - converts all speed based
parameters to Hz, and changes the value
proportionately (i.e. 1800 RPM = 60 Hz).
“Convert RPM” (3) - converts all speed based
parameters to RPM, and changes the value
proportionately.
This parameter is not reset when “Reset to
Defaults” is selected.
Default:
Options:
0
0
1
2
3
“Hz”
“Hz”
“RPM”
“Convert Hz”
“Convert RPM”
080 [Feedback Select]
Selects the source for motor speed feedback.
Note that all selections are available when using
Process PI.
“Open Loop” (0) - no encoder is present, and slip
compensation is not needed.
“Slip Comp” (1) - tight speed control is needed,
and encoder is not present.
“Encoder” (3) - an encoder is present.
“Simulator” (5) - Simulates a motor for testing
drive operation & interface check.
Default:
Options:
0
0
1
2
3
4
5
“Open Loop”
“Open Loop”
“Slip Comp”
“Reserved”
“Encoder”
“Reserved”
“Simulator”
081 [Minimum Speed]
Sets the low limit for speed reference after
scaling is applied. Refer to parameter 083
[Overspeed Limit].
Default:
Min/Max:
Units:
0.0
0.0/[Maximum Speed]
0.1 Hz
0.1 RPM
082 [Maximum Speed]
Sets the high limit for speed reference after
scaling is applied. Refer to parameter 083
[Overspeed Limit].
Default:
Min/Max:
Units:
50.0 or 60.0 Hz (volt class)
[Motor NP RPM]
5.0/420.0 Hz
75.0/24000.0 RPM
0.1 Hz
0.1 RPM
083 [Overspeed Limit]
Sets the incremental amount of the output
frequency (above [Maximum Speed]) allowable
for functions such as slip compensation.
[Maximum Speed] + [Overspeed Limit] must be
≤ [Maximum Freq]
Default:
Min/Max:
Units:
10.0 Hz
300.0 RPM
0.0/20.0 Hz
0.0/600.0 RPM
0.1 Hz
0.1 RPM
Frequency
Output
Voltage
Overspeed
Limit
Frequency Trim
due to Speed
Control Mode
Maximum
Voltage
Motor NP
Voltage
Run
Boost
Break
Voltage
Start
Boost
Allowable Output Frequency Range - Normal Operation
Allowable Speed Reference Range
Allowable Output Frequency Range -
Bus Regulation or Current Limit
Maximum
Frequency
Motor NP Hz
0
Break
Frequency
Maximum
Speed
Minimum
Speed
Output
Frequency
Limit
(lower limit on this range can be 0 depending on the value of Speed Adder)