It is a tension speed controller used with asynchronous single-phase motors mounted on heat exchangers .


Single-phase power supply:1ph+N+PE 230V ± 20 % – 50/60Hz
Available controller sizes: 8A
Working temperatures: -10°C ÷ 50°C
Junction box in thermoplastic UV protected material with protection class IP55
Input by external signal or transducer:

  • 0-20mA
  • 4-20mA
  • 0-5V
  • 0-10V
  • NTC 10KOhm 25°C
  • PWM 3-30V not polarized; max frequency 120Hz RS485

Interface for MODBUS SLAVE networking optional
Possibility of connection for temperature probes (default) or pressure probes
Auxiliary contacts available:

  • S1: mode direct (default with contact NO) – reverse (contact NC)
  • SP: Selection setpoint 1 or 2 (default SP1 with contact NO,SP2 with contact NC)
  • S5: Night speed limitation (default OFF with contact NO, ON with contact NC)
  • S2: ON – OFF speed controller (default ON with contact NO, OFF with contact NC)
  • S6: Enabiling max velocity spray
  • TK: contact for the thermal motor protection (default FANS ON with contact NC, FANS OFF with contact NO)

N°3 logic inputs ON/OFF
N°1 output for relay
N°1 programmable output for relay
N°1 output PWM for slave unit
N°1 programmable output for analogic signal
Principle of PID regulation. Optional Proportional mode
Setting Min and Max fan speed
Display for main working parameters
Led for power supply fault
Led for motor anomalies
Led for controller faults
Outputs for auxiliary supply:

  • 5,0 Volt (Vrr) stable
  • 10,0 Volt (Vrr) stable
  • 20-24 Volt ±10%