Tuning
66 Chapter 6 535 User's Manual
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15. DEADBAND:2
Defines the dead band for control output 2 when using on/off control.
R 1 to 99999 in engineering units
D 2
16. RSP RATIO
Defines the multiplier applied to the remote set point.
R -99.99 to 99.99
D 1.00
17. RSP BIAS
Defines the bias (additive term) applied to the remote set point.
R Any value in engineering units (minimum is BIAS LOW; maximum is
BIAS HIGH)
D Dependent on the BIAS LOW and BIAS HIGH values
18. NO. OF PID
Defines the number of PID sets that will be stored and available for use.
R 1 to 8 For numbers>1, PID TRIP defines tripping between
the PID sets
• SP NUMBER Number of PID sets = number of local setpoints
(specified in NO. OF SP). Each PID set has a
respective SP NUMBER.
• PV NUMBER PID Set = the process variable (PV1 or PV2) used
when PV SOURCE = 1/2: SWITCH or PV SOURCE =
1/2 :BACKUP
D 1
19. PID TRIP
For NO. OF PID > 1, defines the variable used to select the various PID sets.
• PV VALUE PID set selection based on process variable
D SP VALUE PID set selection based on setpoint
• DEV. VALUE PID set selection based on deviation from setpoint
20. TRIP:1
Defines the value that triggers a change to the primary set (#1) of PID values.
R The process variable range
D Dependent on the process variable range
FOR EACH SET OF PID 2 THROUGH 8, you need to set up the following
group of parameters (X represents the PID set number). Set up the param-
eters as they appear for each set of PID. The controller designates the
values for the active PID parameter in the third display with an “
*
” on
either side.
RSP RATIO
1.00
RSP BIAS
(D)
NO. OF PID
1
PID TRIP
SP VALUE
TRIP:1
(D)
DEADBAND:2
2
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