Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 257)

Functional Description 5-3
7000 “B” Frame 7000-UM150I-EN-P – June 2013
Speed Command
The function of Speed Command block is to select one of the 13
possible speed command inputs. Parameter Reference Select (2) in
conjunction with Local/Remote selector switch is used to define the
speed command input Speed Command In (276). When the selector
switch is in Local position, the default speed command is the Analog
Speed Potentiometer typically mounted on the LV panel. When the
selector switch is in Remote position, the parameter Reference Select
defines the source of speed command. The options available are:
 3 analog inputs (Speed Pot, Remote 0-10V,
Current Loop: 4-20mA or 0-20mA)
 3 Preset speed commands
 6 DPI/SCANport commands
 1 Preset jog speed command
The above speed commands are used when the drive is in Normal
mode of operation. However PF7000 has many special modes of
operation e.g. test modes or auto-tuning for which different speed
commands are selected. Table 5.A summarizes the speed command
during these special modes.
Table 5.A – Speed Commands for special operating modes of PF7000
Special operating modes of PF7000 Speed Command In(276)
DC test mode 60Hz
Open Circuit Rated Line Freq(17)
Open Loop 0.1*Rated Line Freq(17)
Rs autotune 2Hz
Ls autotune Rated Line Freq(17)
Flux Reg autotune Autotune Spd Cmd(213)
Speed Reg autotune Autotune Spd Cmd(213)
Demagnetize Rated Motor Freq(29)
Sync transfer requested Bypass Freq(159)
The selected Speed Command In is clamped to a minimum and a
maximum level by parameter Spd Cmd Max (290) and Spd Cmd Min
(293) to give Speed Command (277). The maximum value of Speed
Command cannot be greater than 125% of Base Speed (98).
Note: Contact the factory for applications that require output
frequencies greater than 125% of the motor base speed.