TECHTOP MS1/MS2 Series - Cabling and electrical connections

LOW VOLTAGE MOTORS - Installation, operation, maintenance and safety manual - rev. 01 - 1.07.2016
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Re-check the alignment after nal tightening of the bolts or studs.
3.6 Slide rails and belt drives
Fasten the motor to the slide rails as shown in Figure 2.
Place the slide rails horizontally on the same level.
Check that the motor shaft is parallel with the drive shaft. Belts must be tensioned according to the instructions of the supplier of the driven equipment.
WARNING!
Excessive belt tension will damage bearings and can cause shaft damage.
3.7 Cabling and electrical connections
The terminal box on standard single speed motors normally contains six winding terminals and at least one earth terminal.
In addition to the main winding and earthing terminals, the terminal box can also contain connections for thermistors, heating elements or other auxiliary
devices.
Suitable cable lugs must be used for the connection of all main cables. Cables for auxiliaries can be connected into their terminal blocks as such.
Machines are intended for xed installation only. If not otherwise specied, cable entry threads are metric. The IP-class of the cable gland must be at
least the same as those of the terminal boxes.
Unused cable entries must be closed with blanking elements according to the IP class of the terminal box.
The degree of protection and diameter are specied in the documents relating to the cable gland.
WARNING!
Use appropriate cable glands and seals in the cable entries according to the type and diameter of the cable.
Earthing must be carried out according to local regulations before the machine is connected to the supply voltage.
Ensure that the motor protection corresponds to the environment and weather conditions; for example, make sure that water cannot enter the motor or the
terminal boxes.
The seals of terminal boxes must be placed correctly in the slots provided, to ensure the correct IP class.
3.7.1 Connections for different starting methods
The terminal box on standard single speed motors normally contains six winding terminals and at least one earth terminal.
This enables the use of DOL- or Y/D–starting. See Figure 1.
For two-speed and special motors, the supply connection must follow the instructions inside the terminal box or in the motor manual.