4. Installation
MV3DB Series DB Units
ALSPA MV3000e Dynamic Braking Units
(07/06)
Page 4-4
4.3.3
Installation to Frame Size 3 Drives
Frame Size 3 Preparation
(Refer to Figure 4-2)
1.
Gain access as described in Section 4.3.2.
2.
Release the M5 captive screw securing the Keypad harbour and swing it open.
3.
Locate the link (6) between the RECT+ and DC+ studs, and link (7) between the RECT–
and DC– studs. Remove the push-on covers from the M6 retaining nuts (8), remove the
nuts, washers and the two links.
4.
Open the hinged plastic shroud protecting TB1 on the control board, by releasing the M5
captive screw (1).
5.
Remove two M5 screws (2), (3) and spring washers securing the DB blanking plate (5)
to the drive chassis.
6.
Remove the M5 screw (9) and spring washer securing the control board to the drive
chassis.
7.
Slide the control board forward by approximately 50 mm (2 inches) and disconnect the
Keypad ribbon cable from connector PL2 on the board.
8.
Withdraw the control board enough to allow access to connectors PL4, PL10 and PL11.
Disconnect the cables and release them from retaining clips, then remove the control
board, putting it somewhere safe.
9.
Release the M5 screw (4) securing the DB blanking plate to the rectifier terminal
assembly.
10.
Withdraw the DB blanking plate from the drive chassis.
