Installation
10/05 AWB8230-1541GB
40
Line protection (F1, Q1)
The mains-side is protected to the current strengths listed here.
Table 6: Fused 230 V and 400 V power supply
Fuse elements: a section “Cables and fuses”, page 207.
If you use a motor reactor or a sine-wave filter here, the rate of
voltage rise can be limited to values of approx. 500 V/ms
(DIN VDE 0530, IEC 2566).
By default, the DF51 frequency inverters have a clockwise rotation
field. Clockwise rotation of the motor shaft is achieved by
connecting the motor and frequency inverter terminals as follows:
In frequency inverter operation with the DF51, you can reverse the
direction of rotation of the motor shaft by:
• exchanging two of the phases connected to the motor;
• actuating terminal 1 (FWD = clockwise rotating field) or 2
(REV = anticlockwise rotating field (default));
• applying a control signal through the interface or fieldbus
interface connection.
The speed of a three-phase motor is determined by the number of
pole pairs and the frequency.The output frequency of the DF51
frequency inverter is indefinitely variable from 0 to 400 Hz.
Pole-changing three-phase motors (Dahlander pole-changing
motors), rotor-fed three-phase commutator shunt motors (slipring
rotor) or reluctance motors, synchronous motors and servo motors
can be connected, provided they are approved for use with
frequency inverters by the motor manufacturer.
Type 1 h 3 h
230 V
DF51-320-4K0 – 35 A
DF51-320-5K5
– 35 A
DF51-320-7K5
– 50 A
DF51-322-025
DF51-322-037
DF51-322-055
10 A 10 A
DF51-322-075
DF51-322-1K1
16 A 16 A
DF51-322-1K5 20 A 16 A
DF51-322-2K2
35 A 20 A
400 V
DF51-340-037 – 4 A
DF51-340-075
– 6 A
DF51-340-1K5
DF51-340-2K2
– 10 A
DF51-340-3K0
DF51-340-4K0
– 16 A
DF51-340-5K0
– 20 A
DF51-340-7K5
– 25 A
h
Observe the electrical connection data (rating data) on
the motor’s rating label (nameplate).
Warning!
If motors are used whose insulation is not suitable for
operation with frequency inverters, the motor may be
destroyed.
Motor DF51
U1
V1
W1
U
V
W
Figure 40: To determine direction of rotation, view from here.
Figure 41: Reversing the direction of rotation
Warning!
The operation of a motor at speeds above its rated speed
(indicated on the nameplate) can cause mechanical
damage to the motor (bearings, unbalance) and the
machinery to which it is connected, and can lead to
dangerous operating conditions.
Caution!
Uninterrupted operation in the lower frequency range
(less than approx. 25 Hz) can lead to thermal damage
(overheating) of self-ventilated motors. Possible remedies
include over-dimensioning and external cooling
independent of motor speed.
Observe the manufacturers recommendations for
operation of the motor.
U1 V1 W1
W2 U2 V2
U1 V1 W1
W2 U2 V2
FWD
REV
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