Multi-compressor or multi-fan controller – 71x97x61mm DIN Rail
• Four ON/OFF outputs for the control of single or multi-stage compressors or fans
• Proportional output for speed control (inverters)
• Output with change-over contacts for alarm control
• Input for pressure transmitter (0/4…20mA) or for a temperature probe (NTC10K).
• Two digital inputs on voltage free contact for programmable function, up to three digital optocoupled voltage inputs for a complete system diagnostics
• Selection of the control algorithm: rotation of outputs, sequential activation, optimisation of the available power
• Pressure – Temperature conversion according to gas used
• Storage of the latest nine alarms
• Automatic maintenance management
• Connection to supervisory PC
For cryogenerators in supermarkets, cold stores and all cryogenic systems with variable demand.