Electrical Connection | 6
Instruction Manual R5 RB_RC 0021 C_EN_en
13 | 32
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Busch recommends installing a D-curve circuit breaker.
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Connect the protective earth conductor.
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Electrically connect the motor.
NOTICE
Incorrect connection.
Risk of damage to the motor!
●
The wiring diagrams given below are typical. Check the inside of the terminal box for motor con-
nection instructions/diagrams.
6.2
Wiring Diagram Single-Phase Motor
Connection Scheme of Alternating Current Motor
Explanation of color coding:
BK = black
BN = brown
BU = blue
GN = green
RD = red
YE = yellow
6.3
Wiring Diagram Three-Phase Motor
NOTICE
Incorrect direction of rotation.
Risk of damage to the machine!
●
Operation in the wrong direction of rotation can destroy the machine in a short time! Prior to
start-up, ensure that the machine is operated in the right direction.
●
Determine the intended direction of rotation with the arrow (stuck on or cast).
●
Jog the motor briefly.
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Watch the fan wheel of the motor and determine the direction of rotation just before the fan
wheel stops.
If the rotation of the motor must be changed:
●
Switch any two of the motor phase wires.
Delta connection (low voltage):
Star connection (high voltage):
