4. Installation
MV3DB Series DB Units
ALSPA MV3000e Dynamic Braking Units
(07/06)
Page 4-6
Frame Size 3 Installation
(Refer to Figures 4-1 through 4-6)
Note:
Torque all M6 nuts and screws to 8 Nm (70 lbf in).
1.
Offer the DB Unit to the drive and carefully slide towards the rear right hand side of the
drive chassis, ensuring that :
–
the PCB is not damaged by steelwork.
–
wiring on the DB Unit does not snag.
–
the holes in the DB Unit busbars align with the DC+ and DC– studs
on the drive (Figure 4-4 (2)). The busbars may have to be gently pushed towards
the right to pass the insulation barriers in the moulding.
2.
When the moulding at the front of the DB Unit has just passed the door hinge, push the
DB Unit to the right, to align the plastic tab on the DB Unit (Figure 4-5 (1)) with the slot in
the rectifier moulding – follow the dashed line! Ensure that the back of the DB Unit is as
far to the right as possible. Push the DB Unit home and check that the back is not loose
i.e. that the locating pegs at the rear of the DB Unit have located in the slots (Figure 4-4
(1)) in the drive chassis.
3.
Secure the DB unit to the rectifier terminal assembly using the retained M5 screw
(Figure 4-2 (4)), and secure to the SMPS mounting plate using one M5 x 10 mm
screw and spring washer (Figure 4-2 (3)).
4.
Offer the control board to the drive and connect ribbon cables, as shown in Figure 4-3,
to connectors PL4, PL10 and PL11 on the board, using the indicated sequence A to E.
Figure 4-3 Control board ribbon connection detail
A
D
E
A.
Connect ribbon to
PL4.
B. Insert ribbon into
clip, folding it as
shown.
C. Insert retractile into
clip.
D. Connect retractile to
PL10.
E. Connect retractile to
PL11.
C
B
