Table 4-20 Digital Input Combinations "Dig In1" Or "Dig In2 - Honeywell UDC3500 Product Manual

Keyboard Operation
Front panel keys have no effect on the digital input action in the closed state.
Digital Inputs 1 and 2 combination selections
The Digital Input combination selections listed in Table 4-19 can be used in combination
with the Digital Inputs 1 and 2 listed in Table 4-20.
If the controller is configured for either Two Loop or Cascade control, then how the
switches are allocated between the two loops must be defined. See Section 3.19.

Table 4-20 Digital Input Combinations "DIG IN1" or "DIG IN2"

Selections used Display Indication
in Combination
with
"DIG IN1" or
"DIG IN2"
+PID2 PIDSET 2 in lower
display
+ToDIR
+ToSP2 2SP in lower display
with the active SP
indicator blinking
+DISAT T indicator is no
longer lit
+ToSP1
+RUN R indicator blinks
Digital Inputs 1 and 2 combination operation
There are five possible situations that can occur when working with digital input
combinations. Table 4-21 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.
10/05
Controller returns (toggles) to original state when contact
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.
UDC3500 Universal Digital Controller Product Manual
Monitoring and Operating the Controller
Action on Contact Closure
reopens unless otherwise noted
211