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Rev. B | 2022.03
LPT-M - Operation Manual
6 SYSTEM OPERATION & CONFIGURATION
NOTE:
The LPT-M can operate as part of a Modbus® network or as a
standalone gas detection device.
When part of a Modbus® network, the LPT-M will continuously monitor gas
concentrations on the configured channels and communicate the information
back, when requested, to the BAS / DDC / controller via Modbus® RTU RS-485.
The BAS / DDC will read the LPT-M gas readings and it will trigger the safety
responses (alarms, relays) as it has been configured.
If the BAS / DDC is not requesting information from the LPT-M or it is being
used as a standalone device, the LPT-M will operate according to the gas
readings, alarm setpoints, buzzer and relay configurations as outlined in this
manual. In the event of a gas build up in excess of the alarm setpoints, the
internal alarm will sound and the relay will be triggered to activate a remote
horn and/or strobe device, ventilation fans and/or some other safety procedure.
When the gas level drops below the configured alarm point, the device will
return normal operation.
6.1 Navigating the Menu Structure
There are three programming push-buttons inside the enclosure that can
be used to navigate through the LPT-M menu structure, or you can use the
magnetic wand without needing to open the enclosure (refer to Section
4.1 Exterior Enclosure for location photo). The three magnetic sensors are
indicated by an ARROW UP, ENTER and ARROW DOWN along the side of the
enclosure. The magnetic sensors function the same as pressing the buttons
inside the enclosure.
