Cimarron ARCONTROL BMS - Process 1 (P₁), 2 (P₂), 3 (P₃) and INDEPENDENT (P₁)

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2.6.1 Shutdown States
Shutdowns stop the system if the system is in an ACTIVE, PILOT ON, or IDLE state and the user-dened condions of the
shutdown are met (Table 2.6.3). These allow for the system to be shut down for condions such as over-temperature,
over-pressure, high- or low-level limits, digital inputs, and more.
Table 2.6.2 · MANUAL mode operaonal states
Table 2.6.3 · Shutdown states
MANUAL MODE OPERATION MODES
STATE DISPLAY DESCRIPTION
STOPPED STOPPED
In the STOPPED state, the system closes all valves and acvates the ALARM output.
If the user iniates the system by pressing and holding the OK and → keys for a
second or more, the system will transion to the START-UP state.
START-UP START-UP
In the START-UP state the system checks the input PS3 (PROOF OF CLOSURE). If the
input is acve then the system transions to the POC FAILURE state. If the input
is inacve the user is sll holding OK and → keys, the system transions to the
PRE-PURGE state.
PRE-PURGE PRE-PURGE
In the PRE-PURGE state, if the user is sll holding the OK and → keys, the system
delays for the PREPURGE TIME before transioning to the IGNITING state.
The PRE-PURGE state is intended to provide me for the system to purge itself of
unignited gas.
IGNITE IGNITE
In the IGNITE state, if the user is sll holding the OK and → keys, the system begins
ignion, opens the ESD and Pilot valves, and then connues to ignite for up to 60
seconds or unl ame is detected. If ame is detected the system will transion
to the IDLE state. If the ignion me expires before ame is detected or the user
releases the OK and → keys, then the system will transion to the STOPPED state.
PILOT ON PILOT ON
In the PILOT ON state, the system will wait to transion to an ACTIVE state unl one
of the processes becomes acve. If pilot ame is lost, the system will transion to
the STOPPED state
IDLE IDLE
In the IDLE state, the system waits for the user to press the OK key in order to begin
the processes. If the user presses the OK key, the system will transion to the PILOT
ON state.
ACTIVE 1 ACTIVE PRCS 1
In any of the ACTIVE states, the system connually checks the state of all processes.
If a process becomes acve, the system will open the process’ valve and update
the state name accordingly. If any process becomes inacve, the system will close
that process’ valve and update the state name accordingly. If all processes become
inacve, the system will transion back to the PILOT ON state. If pilot ame is lost,
the system will transion to the STOPPED state.
ACTIVE 2 ACTIVE PRCS 2
ACTIVE 3 ACTIVE PRCS 3
ACTIVE 1+2 ACTIVE PRCS 1,2
ACTIVE 1+3 ACTIVE PRCS 1,3
ACTIVE 2+3 ACTIVE PRCS 2,3
ACTIVE
1+2+3
ACTIVE PRCS ALL
SHUTDOWN STATE DESCRIPTION
SHUTDOWN 1
The system will enter a SHUTDOWN state if any of the SHUTDOWN(s) condions are met
while the system is in any of the ACTIVE, PILOT ON, or IDLE states. In the SHUTDOWN state,
the system closes all valves, except for the INDEPENDENT process, and acvates the ALARM
output. The system will remain in the ALARM state unl the user clears the alarm. The system
will transion to the STOPPED state once the alarm is cleared.
SHUTDOWN 2
SHUTDOWN 3