Machine Weights; Installation; Cooling; Foundation - ABB MT Serie Manual De Instalación, Operación Y Mantenimiento

2.2.4 Machine weights

Total machine weight can vary within the same frame
size (center height) depending on different output,
mounting arrangements and added features.
The following table shows estimated maximum weights
for machines in their basic versions as a function of
frame material.
The actual weight of all our motors is stated on the
rating plate except the smallest frame sizes.
Aluminum
Frame Weight Add.
size kg for brake
56 4.5 -
63 6 -
71 8 5
80 12 8
90 17 10
100 25 16
112 36 20
132 63 30
160 110 30
180 160 45
200 220 55
225 295 75
250 370 75
280 405 -
315 - -
355 - -
400 - -
450 - -
Table 1

2.3 Installation

2.3.1 Cooling

Normal ambient temperatures should not exceed 40°C
(marine standard +45 or +50°C) if standard
performance is to be achieved. Check that the motor
has suffi cient airfl ow. Ensure that no nearby equipment,
surfaces or direct sunshine, radiate additional heat to
the motor. For more information about higher ambient
temperatures and cooling, see "the Motor Guide" or
contact ABB Sales Offi ce.

2.3.2 Foundation

The purchaser bears full responsibility for preparation of
the foundation.
Metal foundations should be painted to avoid corrosion.
Foundations must be even, and suffi ciently rigid to
withstand possible short circuit forces. They shall be
dimensioned as to avoid the occurrence of vibration due
to resonance.
GB –
6
Cast iron Steel
Weight Weight
kg kg
- -
- -
13 -
20 -
30 -
40 -
50 -
90 -
175 -
250 -
310 -
400 -
550 -
800 600
1700 1000
2700 2200
3500 3000
5000 4500
Before mounting the motor, the foundation surface for
the shims or for the feet must be clean from thick paint,
paint drops and dirt. Then it should be checked in order
to discover any height differences between the
individual foot locations. Also, the smoothness within
each footprint area has to be checked. The
requirements are noted in the fi gure below.
Ruler
Foot location
Foundation studs
Bolt the foundation studs to the feet of the motor and
place a 1-to-2 mm shim between the stud and the feet.
Align the motor directly using appropriate means.
Grout the studs with concrete, check alignment and drill
holes for locating pins.
Drain holes
Always check that open drain holes face downward.
In extremely dusty environments, all drain holes should
be closed.

2.3.3 Alignment

Correct alignment is essential to avoid bearing failures,
vibrations and possible fractured shaft extensions.

2.3.4 Slide rails and belt drives

– Fasten the machine to the slide rails as shown in
fi gure 2.
– Place the slide rails horizontally on the same level.
– Check that the machine shaft is parallel with driven,
or driving, shaft.
– Any belt must be tensioned according to the
supplier's instructions.
WARNING
Excessive belt tension will damage bearings and
can cause shaft breakage.
Do not exceed the maximum belt forces (i.e. radial
bearing loading) stated in the relevant product
catalogues.
ABB / Low Voltage Motors / Manual 12-2004
Note! Height
difference shall not
exceed ± 0,1 mm
referred to any other
motor foot location