Rockwell Automation Liqui-Flo DBT Reach Drive - Manual (Page 43)

Parameter Descriptions 3-17
Open Loop (0) = Provides no speed compensation due to load variations. This is
strict volts per hertz output as a function of the speed reference. Slip compensation is
not needed and encoder is not present.
Slip Comp (1) = Provides for frequency output adjustment as a function of load. The
amount of compensation is defined by the value of Slip RPM @ FLA (121). It is used
when tight speed control is needed and an encoder is not present.
Encoder (3) = An encoder is present and connected to the drive.
Simulator (5) = Simulates a motor for testing drive operation and interface check.
Sets the low limit for the speed reference after scaling is applied.
Sets the high limit for the speed reference after scaling is applied.
!
ATTENTION: When operating the drive with encoder feedback selected
(Feedback Select (80) = 3 (Encoder)), a loss of encoder signal may
produce an overspeed condition. For differential encoders, Motor Fdbk
Type (412) should be selected as option 1 or 3 to detect the loss of an
encoder signal. The user is responsible for ensuring that the driven
machinery, all drive-train mechanisms, and application material are
capable of safe operation at the maximum operating speed of the drive.
Overspeed detection in the drive determines when the drive shuts down.
The factory default for overspeed detection is set to 10.0 Hz (or 300.0
RPM) greater than the Maximum Speed (82). Failure to observe this
precaution could result in equipment damage, sever injury or loss of life.
81 Minimum Speed
Range: 0.0 to Maximum Speed [0.1 Hz or 0.1 RPM]
Default: 0.0
Access: 0 Path: Speed Command>Spd Mode & Limits
See also: 79, 83, 92, 95
!
ATTENTION: The drive can operate at and maintain zero speed. The
user is responsible for assuring safe conditions for operating personnel
by providing suitable guards, audible or visual alarms, or other devices
to indicate that the drive is operating or may operate at or near zero
speed. Failure to observe this precaution could result in severe bodily
injury or loss of life.
82 Maximum Speed
Range: 5.0 to 400.0 [0.1 Hz] or 75.0 to 24000.0 RPM [0.1 RPM]
Default: 50.0 or 60.0 Hz (Volt Class) [Motor NP RPM]
Access: 0 Path: Speed Command>Spd Mode & Limits
See also: 55, 79, 83, 91, 94, 202