User guide

9-2
FlexPak 3000 DC Drive Software Reference
9.1 Enabling the Outer Control Loop
To enable the
OCL
, either the I/O Expansion kit must be installed,
CONTROL SOURCE
SELECT
must be set to
NETWORK
, or
DIG IN
0
SELECT
(P.428) must set to
OCL ENABLE
.
The
OCL
enable signal (
OCL ENABLE
(P.849)) must be
ON
to execute the
OCL
. If it is
OFF
or if the drive is not running, all
OCL
functions (S-curve,
PI
, and lead/lag) are held in
reset and
OCL OUTPUT
(P.848) is zero.
Table 9.1 shows the source of the
OCL
enable signal for the various control sources.
To check the status of the
OCL ENABLE
, see parameter
OCL ENABLE
(P.849).
The
OCL
enable logic is shown in figure 9.2.
!
ATTENTION:
An abrupt speed change could occur when the outer
control loop is enabled. Make sure proper safeguards are in place before
enabling the outer control loop. Failure to observe this precaution can
result in severe bodily injury or loss of life.
Table 9.1 – OCL Enable Signal Source
Control Source
I/O Expansion Board
Installed OCL Enable Signal Source
NETWORK
n/a Network
OCL
Enable
KEYPAD
,
TERMBLK
,
or
SERIAL
Yes I/O Expansion kit Digital Input
5 (terminal 64)
No Regulator board Digital
Input 0 (terminal 12) set to 0
Figure 9.2 – Outer Control Loop Enable Logic
* Default Selection