MGM
Motor Designation
6
The following technical characteristics are used to correctly identify MGM motors:
GENERAL CHARACTERISTICS
It is necessary to indicate any special features or options not supplied as standard (see page 59), such as reduced diameter
flanges, thermal protectors, tropical environment execution, etc. Unless otherwise specified, the brake supply voltage is the
same as the motor voltage. Unless otherwise specified, the DC brake voltage supply is 230V 50/60 Hz.
Series
Frame size
Power and poles
Mounting
Voltage and frequency
Brake supply
Insulation class
Enclosure
example:
BA
example:
71
example:
0.37 kW 4 poles
or
B 4
(see technical data)
example:
IM B5
example:
230/400V
50 Hz
example:
AC brake coil, double
terminal board
box for separate
brake supply
example:
class F
example:
IP 54
BM, BA
56 - 280 mm
0.04 - 90
kW
2
4
6
8
2 - 4
4 - 8
2 - 6
2 - 8
4 - 6
4 - 12 poles
See mounting section
According to customer request
AC or DC
3
Single or double terminal board box
4
F or H
IP54, IP55, IP56
1
2
3
4
1
2
3
4
The BM, BA series are also available in the versions BMPV, BAPV with soft start and stop suitable for traversing, and the version
BMSV, BASV with forced cooling fan. The BA series is
also available in the version BAF, with double brake disc and premium brake
torque.
In two speed motors, the model number is followed by the letter D on motors with Dahlander winding, and by the letters DA on
motors incorporating two separate windings (i.e. BADA 71 B 2/8).
BA series motors are available with both DC and AC brakes while BM series motors are available with DC brakes only. DC brake
motors with power supply higher than 24 Volts have as standard a rectifier with emission suppression.
Single speed motors can be provided with a single terminal board box with the motor and brake power terminals connected in
parallel, or with a double terminal board, having the motor supplied separately from the brake. Unless otherwise specified, single
speed motors up to 112 frame size are provided with just one terminal board. Motors with frame size 132 and above are provided
as standard feature with a double terminal board box. On two speed motors, the motor power supply is always separate from
the brake power supply. On single speed motors with separate brake power supply a double terminal board box has to be provided.
A double terminal board box also has to be provided on motors with the following options or auxiliary devices: thermo protectors,
thermistors (PTC), standstill heaters, forced cooling, IP 56 enclosure, EMI filters, DC brake with brake power supply higher than
254V, brake voltage different from motor voltage, motor voltage 400/690V 50Hz, encoder, microswitch, side terminal box.
Example
BA 71 B4, 230/400V 50 Hz, class F, IP 54, IM B5, AC brake coil, double terminal board box.