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84 UDC 3300 Process Controller Product Manual 4/00
4.3 Loop 2 Tuning Parameters Set Up Group
Introduction
Tuning 2 (Loop 2) consists of establishing the appropriate values for the
tuning constants for Loop 2 on 2-Loop or Internal Cascade control.
Loop 2 is only available on Expanded Model DC330E.
Tuning 2 group
prompts
Table 4-2 lists all the function prompts in the Tuning 2 Set Up group and
their definitions.
Table 4-2 Loop 2 Tuning Group Prompt
Lower Display
Prompt
Upper Display
Range of Setting
or Selection
Parameter
Definition
PROPBD3 or
GAIN 3 or
GAINVALn
RATE3MIN
RSET3MIN or
RSET3RPM
MANRSET3
PROPBD4 or
GAIN 4
RATE4MIN
RSET4MIN or
RSET4RPM
CYC3 SEC or
CYC3 SX3
CYC4 SEC or
CYC4 SX3
PVEUVAL1
PVEUVAL2
PVEUVAL3
PVEUVAL4
PVEUVAL5
PVEUVAL6
PVEUVAL7
PVEUVAL8
GAINVAL1
GAINVAL2
GAINVAL3
GAINVAL4
GAINVAL5
GAINVAL6
GAINVAL7
GAINVAL8
Same as TUNING The definitions listed for the parameters at the left are the
same as those listed previously for the Tuning Set Up
group parameters except they are for Loop 2.
The table below shows you how to use them for Duplex
Heat/Cool applications.
DUPLEX OUTPUT RANGES
0 to 50 %—TUNING SETS 2 AND 4: COOL
50 to 100 %—TUNING SETS 1 AND 3: HEAT
Duplex Heat
Output or Loop 1 Loop 2
Range Cool
0 to 50 % Cool PID SET 2 PID SET 4
Gain 2 Gain 4
Rate 2 Rate 4
Reset 2 Reset 4
Cycle 2 Cycle 4
50 to 100 % Heat PID SET 1 PID SET 3
Gain Gain 3
Rate Rate 3
Reset Reset 3
Cycle Cycle 3
Set 4 Tuning Parameters are not available when
ACCUTUN2 is configured for SP+PV.
Gain Scheduling prompts are only available when
PID SETS in the Loop 2 Control Set Up group is
configured for GAIN S.