– 17 –© LEYBOLD VAKUUM GMBH GA 05.212/10 - 09/002. Remote control via an external switchEstablish a conection between pins 4 and 16. TURBOVAC startsif “STOP2” (pin 6) is connected to pin 4 via a switch. TURBOVACstops if the connection is re-interrupted.3. Automatic start when the power is switched-onConnect all of the three pins (4, 6, 16) with one another.TURBOVAC starts automatically when the supply voltage isconnected.TURBOTRONIK can also be controlled via relays, optocouplersor open-collector circuits.3.5 Operator controlSwitch-on the TURBOTRONIK power supply, the “POWER” LEDmust light-up.Start TURBOVAC via remote control, refer to Section 3.4.TURBOVAC accelerates. The “ACCEL” (acceleration) LED lights-up.The “NORMAL” LED lights-up and the “ACCEL” LED goes darkwhen approximately 90% of the rated speed is reached.Switch-off TURBOVAC via the remote control; refer to Section3.4.Only the “POWER” LED is lit.After a fault has been removed, also shutdown the TURBOVACvia the remote control and then restart it.TURBOTRONIK NT12 CONNECTION AND OPERATION 3Strating TURBOVACSwitching-offTURBOVACOperating mode 2Operating mode 3