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

535 User's Manual Chapter 7 85
Applications
other digital inputs.
• MANUAL
Closing input trips the controller to manual. Opening input reverts
controller to automatic. Override by using MANUAL key, a commu-
nications command, or “trip to automatic” function.
• 2ND. SETPT.
Closing input changes active setpoint to the 2nd local setpoint. Open-
ing input reverts controller to previous setpoint digital input. Over-
ride by selecting a different setpoint via the SET PT key, a commu-
nications command, or other digital inputs.
• 2ND. PID
Closing input changes active set of PID values to 2nd set. Opening
input bases active set of PID on rules defined in PID TRIP and TRIP:1
to TRIP:8. Override input only by directly linking PID set to the ac-
tive setpoint and changing the active setpoint.
• ALARM ACK.
Closing input acknowledges all active alarms. Opening input “re-
arms” the controller. If the digital input remains closed, it does not
continue to immediately acknowledge alarms as they become ac-
tive.
• RST. INHBT.
Reset Inhibition. Closing input deactivates “I” (integral) term, regard-
less of the PID values being used. Opening input activates “I” term
(if applicable).
• D.A./R.A.
Direct Acting/Reverse Acting. Closing input reverses action of the
first control output (from direct to reverse, or reverse to direct). Open-
ing reinstates original action.
• STOP A/T
Closing input temporarily disables Adaptive Tuning. Opening input
enables it.
• LOCK. MAN.
Closing contact places the controller in manual control at the desig-
nated output percentage. All locked manual contacts must be opened
in order to return controller to automatic control.
• UP KEY / DOWN KEY
Closing the contact mimics the designated
▲▲
▲▲
▲ or
▼▼
▼▼
▼ key. Useful if con-
troller is mounted behind a window; contact push-buttons can be
used to change setpoint values.
• DISP. KEY
Closing contact mimics the DISPLAY key; scroll through display of
the Setpoint, Deviation % and Output%.
• FAST KEY
Closing contact mimics the FAST key . Use in conjunction with
▲▲
▲▲
▲,
▼▼
▼▼
▼, DISPLAY and MENU keys.
• MENU KEY
Closing contact mimics the MENU key. In OPERATION Mode, pro-
vides entry to TUNING menu. In SET UP or TUNING Mode, ad-
NOTE: Only alarms configured to be
acknowledged are affected by this
digital input.
NOTE: The second display does not
change when tripping to manual from
a closed digital input.