EN |
17
EIOM v2018.04
Recommended cable cross-sectional area (mm2) for connecting 1-phase rotor motor:
CABLE CONDUCTOR CROSS-SECTIONAL AREA, mm
2
PURPOSE
1.5
Motor power supply cable
NOTE: Rotor motor must be grounded. Ground wire must be connected to the ground screw at the motor junction box, and the other
end of the wire must be connected to the ground loop of the device.
General:
If rotor does not rotate, check if:
• All cable connections (if any) are connected;
• Rotor motor is properly connected;
• Power supply voltage matches voltage indicated on the rotor motor plate;
After starting the device, inspect:
• Rotor rotation direction. It has to match to the direction of indicated sticker (if any);
• Operation of the rotation sensor (if any);
5.2.2 3 ~ PHASE ROTOR MOTOR (W/O CONTROL)
Three phase single speed motors can normally be connected for two different voltage ranges (connection in star - higher voltage, or delta - lower
voltage)
(1) (2)
Figure 5.2.2.1 – AC motor (1 speed) wiring diagram for Delta (Δ) and Star (Y) connection.
(1) - Delta (Δ) connection 230V (400V); (2) - Star (Y) connection 400V (690V).
Thermal cut-outs
Thermal cut-outs is fitted to the motor winding. When the fixed temperature is exceeded the cut-out will break an electric circuit e.g. to a contactor
which will turn off the motor. The switching contact is a temperature sensitive bimetal spring.
Thermal protection contacts of the motor (if any) must be connected using the terminals in the motor junction box.
Rotation direction
Three-phase rotor motor rotation direction can be changed by switching two of the power supply phases:
(1) (2)
Figure 5.2.2.2 – Change of rotation for three-phase rotor AC motor:
(1) – clockwise (CW) rotation; (2) – counterclockwise (CCW) rotation;
NOTE: Rotor motor must be grounded. Ground wire must be connected to the ground screw at the motor junction box, and the other end of the
wire must be connected to the ground loop of the device.
NOTE: For more information, control, maintenance, diagnostics and troubleshooting refer to AC motors technical specification
Recommended cable cross-sectional area (mm
2
) for connecting 3-phase rotor motor:
CABLE CONDUCTOR CROSS-SECTIONAL AREA, mm
2
PURPOSE
1.5
Motor power supply cable
0.5
Motor thermal cut-out cable
NOTE: Rotor motor must be grounded. Ground wire must be connected to the ground screw at the motor junction box, and the other end of the
wire must be connected to the ground loop of the device.
