Annunciator Digital Output Function Selection

The annunciator digital output selection screen can be used to assign common built-in functions to the digital outputs. This page is shown below.

In some cases, the setup screen for a particular function will already have a box to select an output (For example, see "Idle Hold Setup").

However, for some functions, the only way to assign the output is through this screen. Also, it might be desirable to have two outputs have the same function.

To assign an output to a function, select the output. A list of possible functions will be shown (including "None"), and the desired function can be selected.

Some outputs will be greyed out if they are hard coded to a particular function.

A list of possible options and what they do is shown below.

Digital Out Functions

Option	Description
LUBE	Powered on when the Pre/Post lube should be active
START	Powered when the start output is active. For Non-ECU modes, this runs a starter. For an ECU, this may be on the entire run time as a run signal to the ECU, depending on ECU type.
IDLE	Powered on during idle hold or idle switch selection. The output can then be wired to the idle/rated input of another ECU or speed controller
PRELUBE PERMISSIVE	Powered on when the prelube permissive is not yet met. Can be used for a lamp
WARNING LT	Duplicates the warning (yellow) segment of the light tower
SIREN	Duplicates the siren signal of the light tower
RED LT	Duplicates the red segment of the light tower
GREEN LT	Duplicates the green segment of the light tower
SHUTDOWN ACTIVE	Powered on during the ‘shutdown delay’ state. Can be used for a powered-shut fuel valve
SUCTION	Suction block valve
DISCHARGE	Discharge block valve
BYPASS	Bypass valve
BLOWDOWN	Blowdown valve
BATT SAVER	Battery saver active. Should be wired to kill the panel.
FAULT	Powered when in the faulted state
WARNING	Powered on when a warning is active
ADEM DER	Driven Equipment Ready logic to go the ADEM. Powered on when the system is clearing the ECU to start the unit.
FUEL VALVE	Duplicates the logic of pin 10 of the module. Powered on during normal run to allow for a fuel block valve.
START GAS SUPPLY	Start gas block valve
SPEED AUTO	Powered on when the speed is in the auto state
HOT START	Powered on when the engine is off but not faulted, for hot start
RESET	Reset broadcast, turns on briefly when reset is pressed
CYL OIL PUMP	Cylinder oil pump
SCRB DRAIN	Scrubber drain valve
COOLER VFD	Cooler VFD run, is generally on when the main motor is on but the start is staggered with a delay
IGNITION ENBL	Duplicates pin 9 of the annunciator, turns on when the ignition should be enabled
FLAME DET. FAULT	Powered on when any flame detect alarm is active
ASC RESET	Use output to drive ASC (Ariel smart compressor) reset pin
RUN STATUS	Output is powered on while the unit is running (according to RPM reading)
VALVE UNLOADER	Meant for a valve unloader, powers on the unloader when the unit is stopped or warming up. Powers off as soon as the bypass valve closes (end of load delay).
STOP PULSE	For a VFD that needs a pulse to stop this output asserts a three second pulse at time of stop. Note: for latch-shut fuel valves, use the option SHUTDOWN ACTIVE instead.
ESD CLEAR	Powered on when no ESD fault is active (which is most of the time)