Digital Inputs

Two* isolated digital inputs are provided for remote dry contact closure

to select one of the following actions:

• Manual control mode.

• Local setpoint 1.

• Local setpoint 2.

• Local setpoint 3.

• Direct controller action.

• Hold SP Ramp/Program.

• Select PID set 2.

• PV = Input 2.

• ReRun – SP Ramp/Program.

• Run – SP Ramp/Program.

• External program reset.

• Disable PID integral action.

• Manual mode, failsafe output.

• Disable keyboard.

• Output 1 = Fixed value

• Start Timer.

• Auto/Manual Station

• Initiate Tuning.

• Initiate PV Hot Start.

• Output 1 tracks Input 2.

• To Remote Setpoint.

• PID reset feedback via Input 2

• Purge

• Low Fire

• To Latching Manual Mode.

Also, the digital inputs can allow one of the following selections to be

combined with one of the above selections:

• Select PID set 2.

• Direct controller action.

• Local setpoint 2 or Local setpoint 1.

• Disable Accutune

• To Run – SP Ramp/Program

*The 2nd Current Output and the 2nd Digital Input are mutually exclusive.

Selection is made via a keyboard entry.