Level Or Pressure Contact Not Working; Bms Dry Inputs; Aux In Chamber Pressure And Hfv Fan Control - Profire Energy PF3100 Troubleshooting Manual

PF3100 TROUBLESHOOTING – SOLUTIONS TO COMMON PROBLEMS
2.3 Level or pressure input not working
If you are not getting a reading on the level or pressure input, check the following:
1. Check the settings
o
Confirm the level input is enabled in settings: Settings > Inputs > Tank Level Input. The Tank Level
Input Mode should be set to the type of input used either 4-20mA or as a digital input.
o
Set the Local Level Input to Enable if the BMS has a level sensor connected directly to it. If the
BMS will be sharing a sensor from another controller set the Local Level Input to disabled.
o
Set the level setpoints to match the application and sensor.
o
The Pressure input must be enabled in settings: Settings > Inputs > Fuel Pressure Input > Fuel
Pressure Input Mode. The input should be set to the type of input used either 4-20mA or as a
digital input.
o
The pressure input does not have sharing capability so each controller that uses a pressure input
will need to have its own sensor.
o
Set the pressure setpoints to match the application and sensor.
2. Check the wiring
o
The positive terminal from either the Pressure or Level input is PTC fused power. In the 4-20mA
case the power can be used for an inline sensor. Make sure the current of the sensor doesn't
exceed the output rating. The maximum supply current is 100mA. When the input is used in dry
contact (digital mode) the positive terminal is used to feed power back to the negative terminal
through the external pressure or level switch.
o
If using a standalone 4-20mA transmitter wire the source side of the transmitter to the negative
pressure or level input. The transmitter must be reference to system ground for an accurate
reading.
2.4

BMS Dry Inputs

If the dry inputs are not working as expected (ESD, AUX IN, POC, START, Pressure, Level) check that they are wired
correctly.
o
These inputs are designed to work with an external dry contact such as a relay or a switch. They
are not designed to work with an external power source. In order to use them wire the input
from the positive terminal, through a contact then back to the negative terminal. When the
contact is closed the negative terminal will be energized from the positive terminal.
o
Do not connect power from an external source directly to the negative terminal. Only use the
signal provided from the positive terminal.
2.5

Aux in chamber pressure and HFV fan control

If chamber pressure is used (Settings > Inputs > Aux In contact > Aux in Contact Mode), do not forget to also enable
the HFV fan control override (Settings > Outputs > Valves > HFV Fan Control Override).
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V1.1
Nov 29, 2016
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