Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 43)

Configuring the Speed Reference 4-23
4.4 Final Speed Reference Logic
In the last part of the speed reference, the signals from the speed reference ramp and
current minor loop are summed and limited by
TOP SPEED to determine the speed
reference sent to the speed loop. The final value that is sent to the speed loop is the
SPD LOOP REFERENCE (P.295). The block diagram is shown in figure 4.7.
STOP MODE SELECT
(P.114)
Selects how the drive
responds to a normal
stop command.
Opening a
permissive input will
always cause a coast
stop. Parameter Range: RAMP
COAST / DB
CURRENT LIMIT
Default Setting: COAST / DB
Parameter Type: Tunable
OIM Menu Path(s): Drive Reference - Drive Reference Configure
If the drive is configured as a current regulator, only COAST / DB can be selected.
STOP SPEED THRESHOLD (P.113)
Configures the
threshold speed
below which the main
contactor will
automatically open
after a ramp stop or
current limit stop is
asserted. Parameter Range: 0 to MAXIMUM SPEED ( RPM or user-defined units
Default Setting: 50 RPM
Parameter Type: Tunable
OIM Menu Path(s): Drive Reference - Drive Reference Configure
Figure 4.7 – Speed Reference Mode Select Block Diagram
From Figure 4.5, Speed Reference
Ramp Block Diagram
From Figure 9.1, Outer Control
Loop Block Diagram
To Figure 5.1, Speed
Loop Block Diagram