ABB DC Machines DMI, Инструкция по эксплуатации и техническому обслуживанию

Страница: 14 / 48

1
Machine installation
Alignment of
V-belt drive
The drive should be arranged in such a way that
the lower belts are the driving ones, i. e. so that
the slack is in the upper belts. The slide rails
(accessories) are to be bolted to the machine feet and positioned in such a way that the
tensioning screws are diagonally opposite each
other and the tensioning screw at the D-end is
located between the motor and the driven object.
Slide rails
Angle Iron
Machine
Fig. 6 Slide rail and tensioning screw
arrangement.
Fig. 7 Distance piece.
Tightening
torque of
foundation
bolts
Connection of
cables
As standard, the terminal box is mounted on the
top of DMI machines. However, the machines
can also be supplied with the terminal box
mounted on the side.
The terminal box is normally (top mounting)
mounted in such a way that the cable connec-
tion is made from the right-hand side (seen from
the drive end). Cable connection from the left-
hand side or from the non drive end or drive end
is possible by removing the terminals from A1
and A2 bar. Turn the box frame so that the ter-
minal opening faces the desired direction. If the terminals from the main field coils are
obstructing the main cable entrance, it is
possible to interchange positions with the
grounding bar. Make sure that all cable shoes
are connected to the same terminals as before.
The terminal box has sealed side covers for
external cable connections. For DMI 180-280
the cover can be exchanged with a standard-
ized cover or it can be bored out to suit the
customer’s cable connection.
Tightening torque for cable connections
inside the terminal box:
– 40 Nm for M10
– 84 Nm for M12
Max allowed belt tension according to DMI catalogue.
Fig. 8 Tightening torque of foundation bolts.
Foundation bolt
Mounting block
Shim 1 mm
Taper pin, nut
and washer
Machine
DMI Tightening torque *)
10 Nm ( lb.ft)
00 0 Nm (10 lb.ft)
0 Nm (10 lb.ft)
0 0 Nm (1 lb.ft)
0 0 Nm (1 lb.ft)
1 Nm (Ib.ft)
00 10Nm (111Ib.ft)
*) Above values without lubrication
45
°