Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 96)

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