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Automatic Restarts
If the Auto Restart feature is enabled, the system will attempt to automatically start after a
power failure. This will only succeed if all alarms are clear.
Start Contact Option
The Start Contact option can be used to start the system from a remote switch located
elsewhere on the site or through a PLC output contact.
1. If there are any Shutdown Messages showing on the display,
open the Start Contact and then close it again to acknowledge
those messages.
2. Open the Start Contact and then close it again to remotely
start the system in Auto Mode. This will only work if all alarms
are clear.
Modbus Card Option (if installed)
This method can be used to start the system via a remote device over a Modbus RTU
network.
1. Have the remote device write “1234” to the 40100 register to
place the system into Auto Mode.
2. Set the remote device to poll the 40100 register and wait for it
to clear to zero. This indicates that the system has processed
the command.
3. Set the remote device to poll the 10001 register and wait for it
to change to 1. This indicates that the system is running.
STOPPING THE SYSTEM
There are five different ways to stop the system:
Stop Key Option
This is the most common way to stop the system.
1. Press the Stop key. The system will stop immediately.
Auto Key Option
This method of stopping the system is used during the initial installation when testing the
pilot valve, main valve, ignition circuit, and flame detection circuitry in a slow sequence.
1. Press the Mode Key to switch the system into Manual Mode.
This prevents the system from automatically restarting from
faults specified in the system settings.
2. Press the Main Key to close the Main Valve and disable
process control.
3. Press the Pilot Key to close the Pilot Valve and stop the
system.
Start Contact Stop
The system can be stopped using the same remote switch or PLC output as with starting the
system using the Start Contact input.
1. Open the Start Contact and leave it open. The system will stop
immediately.
Shutdown Conditions
Whenever any shutdown condition is present, the system will stop and stay stopped until the
condition is removed and the fault is acknowledged. Shutdown condition examples include
the Process Temperature rising above the High Temp ESD Setpoint, the High Pressure
Contact Opening, the ESD Contact Opening, etc. Many conditions can cause shutdowns.
Some conditions will only trigger a shutdown if it is enabled in the system settings. See the
fault chart in this guide for more details.
Modbus Card Option (if installed)
This method can be used to stop the system using a remote device over a Modbus RTU
network.
1. Have the remote device write “4321” to the 40100 register to
stop the system.
2. Set the remote device to poll the 40100 register and wait for it
to clear to zero. This indicates that the system has processed
the command.
3. Set the remote device to poll the 10001 register and wait for it
to change to 0. This indicates that the system has stopped.
ADJUST SETTINGS & REVIEW STATUS
There are four ways to check and adjust system settings and to view system status:
Home Screen
The Home Screen is accessible at any time. Press and hold the OK Key for 3 seconds.
1. Manual Mode: The Home Screen displays the System State
and the Process Temperature.
2. Auto Mode: The Home Screen displays the Process Setpoint
and the Process Temperature.
Quick Setpoint Adjust (auto mode only)
This feature allows some Process Setpoints to be adjusted as a group even when the system
is running. Affected setpoints are the Low Fire Setpoint (if enabled), the Process Setpoint,
and the Pilot Off Setpoint (if enabled). These Process Setpoints can be adjusted directly
from the Home Screen using the Up and Down Keys. The adjustments are limited by the
maximum ranges of the Process Setpoints. Any changes made take effect immediately. This
feature is protected by the L1 Password when password protection is enabled in Menu 4.
Review Menu (manual mode only)
The Review Menu is a diagnostic menu used to check key setpoints and view real time
system measurements such as temperature, pressure, and level. To access it, press the Up
or Down Key while on the Home Screen.
System Menus
Menus 1, 4, 5, and 6 are used for checking and adjusting settings. Menus 2 and 3 show
diagnostic values. Menu 7 is used for calibration and is hidden by default. The System Menus
are accessed by pressing the Menu Key from the Home Screen while in Manual Mode.
Some menus are not accessible while the system is running. Menu 3 contains some system
status information not found elsewhere in the menu system. Refer to the Menu Map table
for more details.
When the system is stopped, all settings can be checked and adjusted. When the system is running, only
some settings may be checked or adjusted. The following table illustrates the circumstances under which
various settings can be checked and adjusted. For more information about the menu system and the user
interface, see the Menu Map section.
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