User Manual

Configuring the Tension Outer Control Loop
12-1
C
HAPTER
12
Configuring the Tension
Outer Control Loop
The tension outer control loop regulator uses the same
RATELIM
and
PI
control blocks
as the current major outer control loop.
The tension output control loop includes:
•
Tension
PI
input
•
Tension
PI
limits
•
Tension
PI
output
þ
To select the tension outer control loop:
▲
Set
OCL SELECT
(P.817) to
TENSION
.
12.1 The Tension PI Input
Refer to figure A.18 in Appendix A of the software manual (D2-3444) as you configure
the tension
PI
input.
The input to the
PI
block is the rate-limited value of
TENSION DEMAND
(P.844), which is
the input to
RATELIM
block. The output is
TEN RAMP OUTPUT
(P.842).
þ
To configure the
PI
block input:
▲
Set
TEN RAMP TIME
(P.833) to specify the reference rate of change.
▲
Connect the analog tension feedback signal to terminals 52(+) and 53(-) on
the I/O Expansion board.
The standard
PI
block feedback is an analog signal proportional to tension;
therefore, it is assumed that the tension transducer output has been amplified
(if necessary) and conditioned to provide a 0 to 10 volt
DC
signal linear from 0
to maximum tension.
Use This Chapter for These Applications:
•
Constant Diameter Tension Regulator
•
Variable Diameter Tension Regulator
•
Generic
Range:
NONE
,
TENSION
,
CURRENT
,
POSITION
P.817 =
Range: 0.1 to 60.0
SECONDS
P.833 =
SECONDS