Moeller DF5 series - Signalling Relay Wiring

09/01 AWB8230-1412GB
Electrical connection
33
If you use a motor filter or a sinusoidal filter here, the rate of
voltage rise can be limited to values of approx. 500 V/ms
(DIN VDE 0530, IEC 2566).
In the factory default setting, frequency inverters of the DF5 series
have a clockwise rotating field. Rotation of the motor shaft to the
right is achieved by connecting the motor and frequency inverter
terminals as follows:
You reverse the direction of rotation of the motor shaft with
frequency inverter operation on the DF5 by:
• exchanging two of the phases connected to the motor.
• triggering terminal 1 (FWD = clockwise) or
2 (REV = anticlockwise).
• applying a control command via the interface or fieldbus inter-
face connection.
The speed of a three-phase motor is determined by the number of
pole pairs and the frequency. The output frequency of the DF5
series frequency inverter can be varied infinitely in the range from
0.5 to 360 Hz.
Connection of pole-changing three-phase motors (Dahlander
changing pole motors), rotor-fed three-phase commutator shunt
motors (slipring rotor) or reluctance motors, synchronous motors
and servo motors is possible, when they are approved for use with
frequency inverters by the motor manufacturer.
Figure 25: Connection types
Figure 26:
Example of a motor nameplate
Frequency inverter
DF5322--075 DF5340--075
Mains voltage Single-phase
230 V
3-phase 400 V
Mains current
9 A 3.3 A
Motor circuit
Delta Star
Motor current
4 A 2.3 A
Motor voltage
3 AC 0 to 230 V 3 AC 0 to 400 V
Warning!
If motors whose insulation is not suitable for operation
with frequency inverters are used, the motor may be
destroyed.
Motor DF5
U1
V1
W1
U
V
W
U1 V1 W1
W2 U2 V2
U1 V1 W1
W2 U2 V2
/ 400 V230
4.0 / 2.3
0,75S1
0.67
ϕ
cos
kW
rpm
1410 50 Hz
A
Figure 27: Direction of rotation, change of rotation direction
Warning!
The operation of a motor with speeds higher than the
rated speed (nameplate) can cause mechanical damage to
the motor (bearings, unbalance) and the machinery to
which it is connected and can lead to dangerous opera-
ting conditions!
Caution!
Uninterrupted operation in the lower frequency range
(less than approx. 25 Hz) can lead to thermal damage
(overheating) with self-ventilated motors. Possible
counter-measures include: Over-dimensioning or external
cooling independant of motor speed.
Observe the manufacturers recommendations for opera-
tion of the motor.
U1 V1 W1
W2 U2 V2
U1 V1 W1
W2 U2 V2
FWD
REV