Fan speed control is now demand based

>Providing a simple and cost effective solution to the problem of fan-and-filter units running continuously, even when not required as the panel temperature is already at an acceptable level, the sensor will help to reduce energy consumption and consequently, running costs.

>With a fixed setpoint of 35 °C, the device provides continuous control with fan speeds varying linearly between 10% at 20°C and 100% at 35°C. No additional power supply is required as the sensor takes a 10V DC feed from the fan-and-filter unit itself.

>Larger TopTherm fan-and-filter units with EC motors from Rittal, accept a 0 to 10V DC or PWM control signal and can be controlled using a programmable logic controller (PLC). A tachometer signal output to monitor fan speed and operating conditions is included, to alert users immediately should any faults or failures occur.

>Rittal's simple fan-and-filter unit is an innovative product with integrated energy efficient control, performance monitoring and sensor for speed control to achieve the best results.