ProFire PF3100 Product Manual page 80

12.5.4 SYSTEM BEHAVIOR – IO EXPANSION CARD 4-20mA INPUT
Scenario
Controller
Input Mode
State
Any except Proof
Any
of Airflow
Any 1 Any
Any stopped
state
Alarm
Any running
state
Any stopped
state
Wait
Any running
state
Warning Any
Any non-
main state
Main Permissive
Any main
fuel state
Display Only Any
Local Proof of
Refer to
Airflow
Secondary PID
Refer to
Input
1 Except in Display Only or Warning states.
2 When Pilot Off mode is set to Off After Main On, the controller transitions to the Waiting state, then purges the system before
reigniting and proceeding to Pilot.
The following is for applications that have multiple input devices monitoring a single controller input
(i.e., input redundancy), that is, a single created input (I/O Expansion Wizard > Add Inputs Tab) is
assigned to more than one card input slot (I/O Expansion Wizard > I/O Modules Tab):
Warning - I/O Expansion input redundancy is supported for hardware redundancy only (i.e., the system
!
continues to run if a redundant input loses communication with the BMS controller or goes out of
range, but the redundant input state is determined by a single input only). The input state of the
redundant input is determined by the first input to establish communication with the BMS controller
only.
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Input state
(see warning
below for
applications using
redundant inputs)
Not tripped
Out of Range
Low Trip
High Trip
Low Trip
High Trip
Low Trip
High Trip
Low Trip
High Trip
Low Trip
High Trip
Low Trip
High Trip
Low Trip
High Trip
Any
Proof of Airflow Behavior table
PID Tuning Guide document for advanced PID system behavior
State
Controller Alerts
Transition
No effect N/A
Alarm/Lockout IO Expansion Input Invalid alarm
Alarm IO Expansion Analog Input Low alarm
Alarm IO Expansion Analog Input High alarm
Lockout IO Expansion Analog Input Low alarm
Lockout IO Expansion Analog Input High alarm
No effect IO Expansion Analog Input Low wait
No effect IO Expansion Analog Input High wait
Waiting IO Expansion Analog Input Low wait
Waiting IO Expansion Analog Input High wait
No effect IO Expansion Analog Input Low warning
No effect IO Expansion Analog Input High warning
No effect IO Expansion Analog Input Low main permissive
No effect IO Expansion Analog Input High main permissive
Pilot 2 IO Expansion Analog Input Low main permissive
Pilot 2 IO Expansion Analog Input High main permissive
No effect N/A
below for system behavior
PF3100 Product Manual
DOC-001149 v8.0
80