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4/00 UDC 3300 Controller Product Manual 175
Figure 5-4 is a block diagram of the Hi/Lo Override Selector.
Figure 5-4 Hi/Lo Override Selector
HI/LO
OVERRIDE
SELECTOR
PID
LOOP 1
PID
LOOP 2
PV 1
PV 2
OUTPUT 1
OUTPUT 2
OUTPUT 1 TERMINALS
OUTPUT 2 TERMINALS
IF DESIRED
24183
Two-loop restrictions
Table 5-22 gives two-loop functionality and restrictions for controllers
with one current output (Auxiliary output) and three relay outputs.
Table 5-22 Two-loop Functionality and Restrictions (Model DC330E-EE-2XX or
Model DC330E-EE-5XX)
Controller with One Current Output (Auxiliary Output) and Three Relay Outputs
Output Type Current Auxiliary Relay #1 Relay #2 Relay #3
Loop 1 is TIME SIMPLEX,
Loop 2 is:
Time Simplex
Current or Current Duplex (100 %)
Current/Time or Time/Current
N/A
N/A
N/A
Not used
Loop 2 Output
Loop 2:
Output 1 or 2
Loop 1 Output
Loop 1 Output
Loop 1 Output
Loop 2 Output
Alarm 2
Loop 2:
Output 1 or 2
Alarm 1
Alarm 1
Alarm 1
Loop 1 is TIME DUPLEX/TPSC,
Loop 2 is:
Time Simplex (N/A)
Current or Current Duplex (100 %)
Current/Time or Time/Current (N/A)
—
N/A
—
—
Loop 2 Output
—
—
Loop 1,Output 1
—
—
Loop 1,Output 2
—
—
Alarm 1
—
Loop 1 is CURRENT OUTPUT or
CURRENT DUPLEX – 100 %,
Loop 2 is:
Time Simplex
Current or Current Duplex (N/A)
Current/Time or Time/Current (N/A)
N/A
—
—
Loop 1 Output
—
—
Loop 2 Output
—
—
Alarm 2
—
—
Alarm 1
—
—
Loop 1 is TIME/CURRENT or
CURRENT/TIME,
Loop 2 is:
Time Simplex
Current or Current Duplex (N/A)
Current/Time or Time/Current (N/A)
N/A
—
—
Loop 1:
Output 1 or 2
—
—
Loop 1:
Output 1 or 2
—
—
Loop 2 Output
—
—
Alarm 1
—
—
TWO-LOOP RESTRICTIONS:
1. Time Duplex and Three Position Step Control are not available on Control Loop 2.
2. Position Proportional Control is not available on Two-Loop or Cascade Controllers.
3. If either Time Duplex or Three Position Step Control is selected as Control Loop 1 Output, then Time Simplex,
Current/Time Duplex and Time/Current Duplex are not available for Control Loop 2 Output.
4. Current Duplex 50 % is not available on Model No. DC330E-EE-2XX.