NT 151/361 Inficon Electronic Frequency Converter

The Inficon / Leybold NT 151/361 Series Electronic Frequency Converters is used to drive the turbomolecular pumps TURBOVAC150, 360, 150 CSV, 360 CSV, 150 V, 360 V,151, 361, 151 C, 361 C.

The TURBOTRONIK NT 151/361 converts the single phase mains voltage into a three-phase AC voltage for driving the asynchronous motor of the connected turbomolecular pump.

The following operational states are indicated by LEDs: mains voltage applied (POWER, green), acceleration (ACCEL, yellow), normal (NORMAL, green), failure (FAIL, red).

A relay output is also available for the NORMAL signal.

After starting the pump will run up at maximum current. This is indicated by the ACCEL LED.

Having reached approx. 80% of the nominal speed the NORMAL LED comes on and the ACCEL LED goes off.

The motor current is continuously monitored and controlled. If the speed cannot be maintained even at the maximum current due to external influences, for example because of a greater gas supply, the speed will drop but the pump will continue to operate.

When the speed drops below 150 Hz approx. the LED FAIL on the converter lights up.

The outputs are short-circuit proof and protected against no load conditions.

The TURBOTRONIK recognizes which pump is connected.

The connection line between TURBOTRONIK and TURBOVAC may be up to 100 m long.

The TURBOTRONIK is contained within a housing, and can be used as a table top instrument or for installation in a 19" rack. Operation is by means of the START and STOP buttons on the front plate.