Honeywell DR4500A User Manual

Operation - Using Two Sets of Tuning Constants (PID Values)
136 DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual Release M
April 2017
5.9 Using Two Sets of Tuning Constants (PID Values)
Introduction
You can use two sets of tuning constants for single output types and choose the way they are to be
switched.
The sets can be:
 Keyboard selected
 Automatically switched when a predetermined Process Variable value is reached.
 Automatically switched when a predetermined Setpoint value is reached.
The following procedures show you how to:
 Select two sets
 Set the switchover value
 Set tuning constant value for each set
 Switch between two sets via the keyboard (without automatic switchover)
ATTENTION
For recorders with two controllers (both enabled) remember that any controller-related values
displayed correspond with the lighted CHN indicator — “1” means that the values apply for
Controller #1 and “2” means that the values apply for Controller #2.
Select two sets
The procedure in 77HTable 5-19 tells you how to select two sets of tuning constants.
Table 5-19 Procedure for selecting two sets of tuning constants
Step
Operation
Press
Action/Result
1
Select Control Set Up
group
SET
UP
Until you see:
Upper Display: SET UP
Lower Display: CONTROL
2
Select
PID SETS function
FUNC
You will see:
Upper Display: Available selections are—
1 ONLY – 1 set of constants
2 KEYBD – 2 sets, keyboard selectable
2 PVSW – 2 sets, auto switch at PV value
2 SPSW – 2 sets, auto switch at SP value
Lower Display: PIDSETS
▲ or ▼
Select the type of PID set.
Set switchover value
If you select 2 PVSW or 2 SPSW, you must set a value at which the sets will switch over.
The procedure in 78HTable 5-20 shows you how to set this value.

Honeywell DR4500A Specifications

General

Brand	Honeywell
Model	DR4500A
Category	Recording Equipment
Language	English