BUSCH SIMPLEX VO 0040 B, Operating Instructions Manual

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6 | Installation
0870S03254
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6.3
29B
Electrical connection
DANGER
Danger from electric shock!
Electric shock will cause death or serious injury.
•
All live lines must be powered down before the electrical installation!
•
Before any electrical work, ensure that the vacuum pump is disconnected from the power
supply and secured against accidental activation. Wait for another 60 seconds after the
LED displays switch off.
•
Electrical installation work must only be performed by trained specialists.
ATTENTION!
Incorrect rotation of drive motors can seriously damage the vacuum system!
Switch vacuum pumps briefly on and off again to check the rotational direction of the motor.
The rotational direction is marked by a direction of rotation arrow on the motor.
If the direction is wrong, reverse two connection phase poles.
ATTENTION!
Over voltage damages the vacuum system.
During a high-voltage test, the frequency inverter must be disconnected due to danger of de-
stroying the power semi-conductors. The frequency inverter has already been subjected to a
high-voltage test with special test process in the final inspection.
6.3.1
54B
Connection of the power supply
CAUTION
Danger due to accidental starting of the vacuum pump!
The vacuum pump starts up when the main switch is actuated.
Make sure that starting the vacuum pump does not lead to a dangerous situation.
ATTENTION!
Danger of damage to the vacuum system.
Wrong connection.
•
Wire the vacuum system according to the wiring diagram chap. 14.2.
Procedure :
•
Ensure that the power supply for the vacuum system corresponds to the specifications in
the circuit diagram.
•
Ensure that the EMC class of the vacuum pump meets the requirements of your mains grid;
if necessary, provide additional interference suppression measures (for EMC class of the
vacuum pump, see technical data (chap. 15).
•
We recommend using 16 A fuses of type gG/gL (IEC 60269-1). Ensure that the trigger time
does not exceed 0.4 seconds.
If you want to use a fault-current circuit breaker:
•
Use an all-current-sensitive fault-current circuit breaker (type B).
•
The synchronous motor and the frequency inverter have very high efficiency. High reactive
power may be displayed on some mains grids, but this does not affect the very high effi-
ciency of the vacuum pump drive.