MGM BAH 132 Series, Use And Maintenance Manual

Page: 31 / 63

Page 31 of 63
Doc. Ref.: A79H0319
Auxiliaries devices wires identification
The below chart provides indications about the markers applied on the auxiliaries wires, which are easily detectable inside the
terminals box (see an example on the picture shown on the side). The power supply f.e. of the heaters or of the forced ventilation
is stated on the motor name plate. For any doubts on the auxiliaries connection we please you to contact us.
Note: The motor auxiliary devices wiring depending from motor type might be different from what indicated in the
above picture that is provided just as an example.
The anti-condensation heaters can be powered only when the motor is turned off. Never power the heaters while the
motor is on
Forced ventilation during operation ensure the good functioning of the motor taking away the motor heat dissipation.
Make sure that the forced ventilation is kept on for a sufficient time (according to the motor temperature) after the
motor has been turned off. Air blowers work properly only if rotating in one direction towards the motor splines. Make
sure that in the case of AC blowers, the connection is done in order to have the correct direction of rotation (see the
arrow indicating the direction of rotation on the fans).
RC filter
We suggest to use a RC filter to protect the AC brake coil from overvoltage. The RC filter wiring diagram is shown below
Auxiliary Cable identification
Space Heaters HT
Thermal protectors (PTO) TP
Thermistors (PTC) TM
Forces-cooling SV
Brake release microswitch MS
Brake coil heaters HB
Brake disc wear microswitch MB