Neuron XT

ELGi's tropical parameter sets are the real deal — on hot-climate installs, confirm the machine is running the high-ambient profile before chasing phantom high-temp trips.

Manufacturer

ELGi

Display

Color TFT, icon + plain-text menus, multi-language.

Years produced

~2018 – present on EG / EQ / AB series.

Power supply

24 VDC internal.

Ambient range

0 – 50 °C (tropical-rated builds).

Protection rating

IP54 front.

Relay outputs

Contactors, load solenoid, blowdown, fan, dryer, alarm.

Used on

ELGi EG series global screws
EQ small industrial
AB oil-free (variant firmware)

Features

Air~Alert IoT monitoring with predictive alerts
Built-in 4-machine sequencing
High-ambient parameter sets for tropical installs
Energy report pages

Interfaces

Modbus RTU standard
Air~Alert telematics (option)
USB log export

Sensor inputs

Airend discharge temperature (PT100)
Package pressure transducer
Sump pressure
Oil filter and separator differential switches
VFD feedback (VSD builds)

Fault code lookup

Discharge Temperature Trip PT100 over limit.

First checks

Oil level / cooler
Thermal valve
Ambient above rating — check tropical kit presence

See trigger conditions & affected models →

Low Oil Pressure at Start Oil circuit did not pressurize in window.

First checks

Oil level
Oil pump
Blowdown sealing

See trigger conditions & affected models →

Pressure Sensor Fail Out-of-range signal.

First checks

Loop check
Connector

See trigger conditions & affected models →

VFD Fault Drive fault relayed.

First checks

Drive display
Heatsink cleaning
Line conditions

See trigger conditions & affected models →

Separator ΔP High Separator loaded.

First checks

Replace element
Check oil type and interval

See trigger conditions & affected models →

Air~Alert Offline Telematics link down.

First checks

Signal strength at antenna
SIM status
Advisory only — machine continues

See trigger conditions & affected models →

Fault list is non-exhaustive and firmware-dependent. Always confirm against the controller’s on-screen help or OEM manual.

Sensor pin resistance & signal values

Pin-level resistance and signal values for the sensor types this controller uses. Works offline. De-energise the panel and lift one lead before ohming any element.

Wiring notes

Tropical builds have different fan-control parameters — verify parameter set after any board swap
Modbus and Air~Alert share the comm card; register conflicts if both polled aggressively
Sensor harness uses sealed connectors — replace seals after service

Known issues & field notes

High-humidity installs see connector corrosion despite seals — dielectric grease at every service
Air~Alert aggressive-polling firmware early builds could watchdog the display — update firmware

Service PIN via ELGi service network.

Manuals & literature

ELGi — manuals index

Services & parts portal

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