Rockwell Automation WebPak 3000 DC Drive Application Workbook Version 1.1 - Manual (Page 51)

Configuring the Outer Control Loop Reference 9-1
C
HAPTER
9
Configuring the Outer
Control Loop Reference
The outer control loop ( OCL ) is typically used to provide dancer position or tension
control in a web processing system.
Configuring the outer control loop reference includes setting up the following:
• Tension setpoint
• Dancer loading
Refer to figure A.17 in Appendix A of the software manual (D2-3444) as you configure
the outer control loop reference.
9.1 The Tension Setpoint
þ
To configure the tension setpoint when OCL SELECT (P.817) is set to CURRENT
or TENSION :
▲
Set TENSION SETPOINT SEL (P.855) to select the source of the tension
reference. The choices are:
REGISTER - Provides a tension reference based on the register value of
TENSION SETPOINT (P.854).
ANALOG - The tension reference is developed by the analog input signal at
terminals 50 and 51 on the Regulator board and is scaled by parameters
TENSION SETPT SIG TYPE (P.413), TENSION SETPOINT ZERO (P.414), and TENSION
SETPOINT GAIN (P.415).
Use This Chapter for These Applications:
• Constant Diameter Current Regulator (Section 9.1)
• Variable Diameter Current Regulator (Section 9.1)
• Constant Diameter Position Regulator
• Variable Diameter Position Regulator
• Constant Diameter Tension Regulator (Section 9.1)
• Variable Diameter Tension Regulator (Section 9.1)
• Generic
Range: REGISTER , ANALOG P.855 =