User`s manual
Table Of Contents
- 535 User's Manual
- Table of Contents
- Chapter 1: Introduction
- Chapter 2: Basic Interface
- Chapter 3: Installation
- Chapter 4: Hardware Set Up
- Chapter 5: Software Configuration
- Chapter 6: Tuning
- Chapter 7: Applications
- Control Type
- Alarms
- Duplex Control
- Slidewire Position Proportioning Control
- Velocity Position Proportioning Control
- Staged Outputs
- Retransmission
- Digital Inputs
- Remote Setpoint
- Multiple Setpoints
- Multiple Sets of PID Values
- POWERBACK
- Self Tune–POWERTUNE®
- Ramp-To-Setpoint
- Input Linearization
- Load Line
- Security
- Reset Inhibition
- Process Variable Reading Correction
- Serial Communications
- Cascade Control
- Ratio Control
- Appendix 1: Menu Flowcharts
- Appendix 2: Parts List
- Appendix 3: Troubleshooting
- Appendix 4: Calibration
- Appendix 5: Specifications
- Appendix 6: Glossary
- Appendix 7: Isolation Block Diagram
- Return Procedures and Warranty Information
- 500 Series Process Controllers User's Manual
102 Chapter 7 535 User's Manual
Applications
• Configure Unit 2 for the optional Remote Setpoint (see Chapter 4).
Software Configuration
1. For Unit #1
a. In CONFIG. menu, set CTRL. TYPE to STANDARD.
b. In PV INPUT menu, set the PV TYPE parameter.
If type is V/mA, set LOW RANGE and HI RANGE parameters to
match the transmitter range.
2. For Unit #2
a. Set the RSP input jumper in the mA position on the Microcontroller
Circuit Board (see Chapter 4).
b. Go to the REM. SETPT menu.
c. Set RSP:LO. RNG. to 0. Set RSP:HI.RNG. to 100. This will set the
range of the remote setpoint to 0 TO 100 (to correspond to the 0% to
100% output range of Unit #1).
d. Wire the control output of Unit #1 to the remote setpoint input of Unit
#2 as shown in Figure 7.20.
e. When in operation, Unit #2 must be under remote setpoint control.
Tuning Cascade Control
1. The secondary loop is controlled by Unit #2, which does most of the work
in controlling the process. Put the secondary loop/Unit #2 under Manual
control, and perform a Pretune on it. Once that Pretune is completed, put
the Unit #2 under Automatic control.
2. The primary loop is controlled by Unit #1, which controls disturbances or
load changes in the process. Now place the primary loop/Unit #1 into Manual
and perform a Pretune on this loop. Once this Pretune is complete, the Cas-
cade Control Loop is completely tuned. Place Unit #1 into Automatic con-
trol to allow the system to control to the desired Setpoint of the Primary loop.