Honeywell UDC 3300 Means that the parameter is configured and the action, Display Indication

Keyboard operation

Digital inputs 1 and 2 combination selections

Front panel keys have no effect on the digital input action in the closed state.

The Digital Input combination selections listed in Table 5-31 can be used in combination with the digital inputs 1 and 2 listed in Table 5-30.

Refer to Section 3 – Configuration and make your selections under the Options Set Up group function prompt “DIG 1 COMB” or “DIG 2 COMB.”

When 2-loop or cascade control is configured, digital input 1 operates on Loop 1 and digital input 2 operates on Loop 2, unless otherwise noted.

Table 5-31 Digital Input Combinations “DIG IN1” or “DIG IN2”

Selections used in Combination with “DIG IN1” or “DIG IN2”

+PID2

+ToDIR

+ToSP2

+DISAT

+ToSP1

+RUN

Display Indication

PIDSET 2 in lower display

RSP blinks

T indicator is no longer lit

R indicator blinks

Action on contact closure

Returns (toggles) to original state

when contact opens.

Selects PID set 2.

Puts the controller into direct controller action.

Selects the second local setpoint.

Disables Adaptive tune.

Selects the local setpoint.

Starts or restarts RUN of SP Ramp/Program.

Digital inputs 1 and 2 combination operation

There are five possible situations that can occur when working with digital input combinations. Table 5-32 lists these situations and the resulting action when the switch is active.

In the table:
Enabled	means that the parameter is configured and the action
	will occur when the digital input is active.

Action Disabled means that the digital input or digital combination parameter is configured but the action cannot occur when the digital input is active because the selected parameter is disabled.

188 UDC 3300 Controller Product Manual 4/00