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Compressor control systems RENNERlogic, RENNERtronic and RENNERtronic Plus

RENNERlogic: standard control system

RENNERlogic – a control that is both functional and simple with many benefits!

Features

  • the start button starts up the compressor, the stop button makes the compressor go into shut off delay
  • emergency stop: the compressor switches off immediately in emergency situations
  • LED display: the compressor status is displayed by various flashing patterns
  • remote-indicating thermostat monitoring the temperature of the system
  • hour meter to easily monitor operating hours
  • pressure gauge and switch to check and control pressure
  • DIP switch to easily set the shut off delay and start up period
  • Modbus RTU, for example, to connect to a higher level control system

 

Advantages

  • standard: terminals in the switching cabinet to connect an external on/off switch
  • standardised: potential free signals, fault and stand by messages
  • simplified: automatic restart after power failure by connecting an additonal board (90 seconds time delay)
  • option: the compressor can be turned off via an external signal

 

Standard equipment

  • RENNER screw compressors from 2.2 – 55.0 kW

 

 

RENNERtronic: The user-friendly basic control

 

Performance features

Pressure control within two adjustable pressure bands:
Customers can determine two pressure bands within limits set by the factory. Based on these pressure bands the compressor is controlled.

Capture of operating and load hours:
To identify uneconomical operation where load hours are highly variable.

Monitoring of adjustable maintenance intervals:
For different compressor components, such as air or oil filters, maintenance intervals can be programmed. A message appears when maintenance is due.

Fault memory:
The last ten messages stating the current operating hours are displayed on the control for diagnostic purposes.

Different code levels:
The menu system is protected from unauthorised changes by various code numbers (e.g. factory code, service code, customer code).

Base load change over function:
The control has a base load change over function that can be activated via the menu (additional module required).

Control of frequency converters: A PI control is integrated for controlling compressors with variable speed control. This control determines the rotating speed setpoint depending on the set pressure limit and transmits this to the converter as an analog signal (additional module).

Modbus RTU:
Serves, for instance, for the connection to a higherlevel control system or a building control system (Industry 4.0 Ready).

 

Advantages

  • saves energy
  • safe operation of the compressor
  • controls and monitors the system
  • easy to use
  • greater reliability of operation
  • can be exhanced according to specific customer requirements
  • optional compressor monitoring

 

Standard equipment

  • starting with RS 75 in different versions
  • for all compressors with variable speed control
  • RS-PRO 2-30.0 – 55.0 D
  • Booster (RSM)

 

Optionally available for:

  • RENNER screw compressors from 2.2 – 55.0 kW
  • SL-S / SL-I 1.5 – 7.5


RENNERtronic Plus: The compressor control with additional functions

 

Performance features

The RENNERtronic Plus has all the functions of the standard RENNERtronic. And it can do even more!

Real-time clock:
All functions can be called up on the large display with real-time clock. The internal software has a timer with 7 channels.

Base load change over function:
This software comes with a base load change over function which will be connected via RS485 interface(modbus) to a maximum of 4 additional compressors.

Hardware:
The hardware also has additional features: RENNERtronic Plus has 11 digital inputs (the RENNERtronic has 5), 8 digital outputs (instead of 6), 1 analog input for a temperature sensor and 3 for pressure transducers and current transformers. Both analog outputs can be used without an additional module. Easier operation due to a larger display.

Monitoring of system pressure:
System pressure is monitored via a pressure transducer connected to the air end. The compressor only starts up after full discharge; shut off delay time can be controlled by system pressure. In addition, the controller checks whether the mains pressure is building up, for example to identify a belt break.

 

Options

  • profibus connection

 

Standard equipment

  • SLM-S 7.5 – 30.0
  • water injected compressors (RSW)

 

Optionally available for:

  • starting with RS 75.0 in different versions
  • for all compressors with frequency converters
  • RS-PRO 2-30.0 – 55.0 D
  • Booster (RSM)
  • RENNER screw compressors from 2.2 – 55.0 kW
  • SL-S 1.5 – 5.5