Rockwell Automation Liqui-Flo DBT Reach Drive - Manual (Page 121)

Parameter Descriptions 3-95
The Speed Select input function configuration process involves assigning the
functionality of the three possible Speed Select input functions to physical digital
inputs. The three Speed Select inputs functions are called Speed Select 1, Speed
Select 2, and Speed Select 3, and they are assigned to physical inputs using the
Digital In”x”
Sel parameters.
Table 10.6 describes the various reference sources that can be selected using all
three of the Speed Select input functions. If any of the three Reference Select input
functions are not configured, then the software will still follow the table, but will treat
the unconfigured inputs as if they are permanently open.
18 = Auto/Manual: The Auto/Manual function allows a single control device to
assume exclusive control of reference select. The most recent peripheral (HIM or
terminal block) that makes a manual reference request will be given control of the
reference.
If the Auto/Manual input function is closed, then the drive will use one of the analog
inputs (defined by TB Man Ref Sel (96)) as the reference. If an HIM subsequently
requests manual control (that is, Auto/Man F-Key is pressed) and then gives control
up (presses Auto/Man F-Key again), then the Auto/Manual digital input must be
opened and closed again to regain control of the manual reference.
If this input is open, then the terminal block does not request manual control of the
reference. If no control device (including the terminal block) is current requesting
manual control of the reference, then the drive will use the normal reference selection
mechanisms.
20 = Acc2 & Dec2: A single input function is used to select between Accel Time
1/Decel Time 1 and Accel Time 2/Decel Time2.
If the function is open, the drive will use Accel Time 1 as the acceleration rate and
Decel Time 1 as the deceleration rate. If the function is closed, the drive will use Accel
Time 2 as the acceleration rate and Decel Time 2 as the deceleration rate.
21, 22 = Accel 2, Decel 2: One input function (called Accel 2) selects between Accel
Time 1 and Accel Time 2, and another input function (called Decel 2) selects between
Decel Time 1 and Decel Time 2. The open state of the function selects Accel Time 1
or Decel Time 1, and the closed state selects Accel Time 2 or Decel Time 2.
Table 3.8 – Effect of Speed Select Input State on Selected Reference
Speed
Select 3
Speed
Select 2
Speed
Select 1
Parameter that determines
reference:
Open Open Open Speed Ref A Sel
Open Closed Open Preset Speed 2
Open Closed Closed Preset Speed 3
Closed Open Open Preset Speed 4
Closed Open Closed Preset Speed 5
Closed Closed Open Preset Speed 6
Closed Closed Closed Preset Speed 7