AERtronic / Delta Control
Aerzen builds straddle the line between compressor and process blower — the controller's permissive/start-sequence pages are the fastest diagnostic tool on these packages; learn to read them before touching hardware.
Manufacturer
Aerzen
Display
Graphic LCD (Delta Control) or color TFT (AERtronic) with soft keys.
Years produced
Delta Control ~2000s on Delta Screw / Delta Hybrid; AERtronic ~2015 – present.
Power supply
24 VDC control rail.
Ambient range
0 – 45 °C.
Protection rating
IP54 front.
Relay outputs
Start/stop command, bypass/unload valve, oil pump, alarm, readiness.
Used on
- Aerzen Delta Screw packages
- Delta Hybrid rotary lobe/screw hybrids
- Some Delta Blower G5 packages
Features
- Process-gas capable parameter sets (special gas versions)
- Oil system supervision: pressure, temperature, and filter monitoring
- Purge and start-sequence logic for process duty
- Load profile recording for warranty documentation
Interfaces
- Profibus / Modbus option cards
- Analog remote setpoint 4–20 mA
- Dry contacts for remote enable
Sensor inputs
- Discharge temperature (PT100)
- Suction and discharge pressure
- Oil pressure and oil temperature
- Vibration input (option on process builds)
Fault code lookup
First checks
- Oil level
- Oil pump function
- Oil filter differential
- Pressure transducer zero
First checks
- Injection / cooling oil flow
- Cooler approach
- Process load vs design
First checks
- Read the sequence page to see which permissive hung
- Bypass valve actuator
- Pre-lube pump if fitted
First checks
- Verify with contact thermometer before shutdown decisions
- Oil supply to bearings
- Sensor loop
First checks
- Bus termination
- Address conflict
- Card seating
First checks
- E-stops
- Door interlocks
- Safety relay reset
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
- Oil-pressure transducers must be mounted with a snubber — direct-mounted sensors fail early on pulsation
- Remote setpoint input is isolated 4–20 mA; check isolation before tying into plant loops
- Purge solenoid outputs are duty-cycled on some builds — measure with the sequence active, not static
Known issues & field notes
- Delta Control LCD backlights fail with age — the controller still runs and communicates; screen is replaceable
- Firmware is gas-specific on process builds — never flash a standard-air image onto a special-gas unit
Three-level access; service codes via Aerzen service organization.
Your manuals
Sign in to upload and pin your own PDF manuals to this controller.