Connect Three Phase Motor With 6-Pin Terminal Board; Connect Three Phase Motor With 9-Pin Terminal Board - Pfeiffer Vacuum HENA 202 Betriebsanleitung

Property damage from high starting torque
The specific load behavior of the vacuum pump requires direct on-line starting at full motor power.
Engine damage occurs if a different starting circuit is used.
► Always start the motor directly.
► Never use a star-delta start-up circuit.
5.6.1 Connect three phase motor with 6-pin terminal board
There are 2 different circuit configurations:
● Delta connection for low voltage
● Star circuit for high voltage
V
Fig. 8:
The 3 wires are connected in series. Their connection points are connected to the mains. The voltage
per phase is equal to the mains voltage, while the mains current is √3 times the phase current. The del-
ta connection is marked with the ∆ symbol. The voltage between the incoming mains supply lines is
called mains voltage. The mains current is the current flowing in the incoming supply lines.
Connect the three phase motor with delta connection
► Connect the three phase motor according to the connection diagram.
V
Fig. 9:
The ends of the 3 phases are connected in the star point. The terminal voltage is √3 times the phase
voltage, the mains current is equal to the phase current. The star circuit is marked with the Y symbol.
Connect the three phase motor with star circuit
► Connect the three phase motor according to the connection diagram.
5.6.2 Connect three phase motor with 9-pin terminal board
There are 2 different circuit configurations:
● Double star circuit for low voltage
● Star circuit for high voltage
V
Fig. 10:
U2
W2
U1 V1
L2
L1
Delta connection
W2 U2
U1 V1
L2
L1
Star circuit
L1
U1 U3 V2
L2 V1 V3 U2
L3
W1 W3
W2
Terminal board for low voltage
NOTICE
V2
W1
L3
V2
W1
L3
Installation
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