R-series controller (Xe-90M/145M panel, R-series UI)
The R-series panel firmware is common across a wide horsepower band — parameters, not hardware, define the machine size. Always back up parameters before board swaps.
Manufacturer
Ingersoll Rand
Display
Color LCD with membrane navigation keys (evolved Xe-series hardware), or full touchscreen on later builds.
Years produced
~2013 – present on R-series oil-flooded screws.
Power supply
24 VDC logic from panel PSU.
Ambient range
0 – 46 °C.
Protection rating
IP54 front.
Relay outputs
Starter outputs, solenoid outputs, dryer, remote alarm, low-ambient heater control.
Used on
- Ingersoll Rand R30 – R160 fixed speed
- RS / RSn variable speed R-series
Features
- Sequential control ready with X-series system controllers
- Performance analytics pages (specific power estimate)
- Active protection: controller learns normal rates-of-change and alarms on anomaly trends
- Remote firmware update capability via service tool
Interfaces
- Modbus TCP/RTU
- Ethernet to X-series system controls
- Helix / Flow Control connectivity
- USB service port
Sensor inputs
- Airend discharge temperature
- Package pressure
- Sump pressure
- Coolant filter differential (option)
- VSD drive feedback bus (RS/TS builds)
Fault code lookup
First checks
- Coolant level and cooler
- Thermal valve
- Ambient and cabinet filters
First checks
- Replace element
- Check scavenge line
- Confirm correct coolant
First checks
- Connector at the sensor body
- Harness chafe at the separator tank
- Swap with known-good
First checks
- Sub-code maps in the drive manual
- Heatsink fans running
- Line reactor condition
First checks
- Running amps vs data plate
- Voltage imbalance under load
- Starter contact condition
First checks
- Inlet valve function
- Minimum pressure valve
- Blowdown valve sealing
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
- Sensor harness connectors are keyed but similar — label before disconnecting during service
- The USB port is for the IR service tool; do not power laptops from it
- VSD comms run on a dedicated shielded pair — do not re-route through the mains duct
Known issues & field notes
- False 'sensor failure' alarms after pressure-washing — water in the connector bodies; dry and dielectric-grease them
- Some early RS builds shipped conservative low-ambient defaults causing nuisance cold-start lockouts; parameter update resolves
Operator and service passwords distributor-managed; factory level requires IR service tool login.
Manuals & literature
Ingersoll Rand — support portal
Customer Care → Manuals & Parts (login often required)
Your manuals
Sign in to upload and pin your own PDF manuals to this controller.