Frequency converter FRQ5S-4A

Speed controller with 5-step switch for 3~ fan with all pole sine filter

Maximum factory-set output frequency: 50Hz

The FRQS/FRQ5S frequency inverters have integrated all pole sine filters as standard. Therfore there is no need for shielded cables for the installation. This makes the unit also perfectly suited to retrofit into existing systems. The sine filters enable existing non-shielded cables to be retained. This units also reliably control motors which, due to their design, are not usually considered suitable for frequency inverter operation i.e. external rotor motors.

Save and trouble free motor operation with integrated, all pole effective sine filter

Integrated 5-Step switch Step0=0Hz; Step1=10Hz; Step2=20Hz; Step3=30Hz; Step4=40Hz; Step5=50Hz

Potential-free operation notification

Enable contact section for a stand-by switch or electronic reset

Motor protection by connecting thermostats "TB" or thermistors "TP"

Interference emission EN 61000-6-3

Interference immunity EN 61000-6-2

Complete range in IP54

Trouble free parallel operation of motors

No danger to the motors through voltage peaks, bearing current, etc.

No limit of motor cable length

Retrofit in installations with existing wiring(unshielded cables)

Operation without electromagnetic motor noise

Wide voltage range 3~ 208V-480V, 50/60Hz

When operating with Explosion proof fans the FRQ has to be placed outside the EX zone!