MGM BAH 132 Series, Руководство по эксплуатации и обслуживанию

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Page 26 of 63
Doc. Ref.: A79H0319
Wiring
Before connecting the motor to the power supply it must be earthed through the terminals located inside the terminal
box and, if any, on the motor frame. These terminals must be kept clean and protected against corrosion.
Verify that the power supply specifications (Voltage and Frequency) are congruent to those indicated on the motor nameplate.
Properly sized wires must be used both to connect the motor to the power supply and to connect the earth wire. All the cables
and wires must comply to the regulations of the country where the motor is installed.
It’s additionally necessary to use over-current protection devices properly sized according to the motor nominal current. We
advise to follow the indication as reported in the EN 60204-1 standard or to comply with the regulations of the country where the
motor is installed.
Verify that the motor direction of rotation of the motor is that desired. To change the direction of rotation reverse 2 supply
phases.
Suitable devices must be adopted in order to contain any disturbances generated by electronic starters. In case of separate brake
feeding, we suggest to keep the brake cables together with other cables only if they are shielded.
For the main supply follow carefully the below wiring connections. For the wirings of those motors destined to USA and Canada,
pls follow up the additional instructions Motor Voltage and Frequency are indicated on the motor nameplate. When the wiring
connection is completed, check thoroughly the proper tightening of the terminals nuts. Please contact MGM for information
concerning the tightening nuts torque.
Verify that the full load motor current is congruent with the data stated on the name plate.
To wire motors controlled by inverter please follow the instructions provided by the inverter manufacturer. For supply voltage
higher than 500V or if long cables to connect inverter – motor are used it’s recommended to use motors windings with double
impregnation or proper filters. About the wiring of the motors driven by an inverter, please follow up the inverter manufacturer
instructions. For motors to be used with inverter, the brake should be powered separately from the motor itself, to ensure proper
functioning of the brake coil. Where prolonged duty cycles are provided check the need of a forced ventilation. Please contact
MGM for more information about this issue.
DC brake coil is fed through a rectifier located inside the terminal box (except for the 24V DC brake). The AC side rectifier supply is
stated on motor name plate.
To connect the auxiliaries, if on board (auxiliaries like thermal protectors, heaters, forced ventilation etc.) consider the
identification of the wires inside the terminal box as described in the relevant paragraph.
Note: according to the motor type and to the auxiliary devices present, the shape of the terminal box and the position
of the earth terminal can be different from what visible in the below figures.