Installation - Wiring; Installation Recommendations - Schneider Altivar 61/71 Guía De Explotación

Installation - Wiring

Installation recommendations

Introduction:
The VW3A7101 braking unit must only be used on drive ratings ATV71H C20N4, C25N4, C28N4 and ATV61H C25N4 and C31N4.
The VW3A7102 braking unit must only be used on drive ratings ATV71H C31N4, C40N4, C50N4 and ATV61H C40N4, C50N4 and C63N4.
The VW3A7103 braking unit must only be used on drive ratings ATV71H C20Y, C25Y, C31Y and ATV61H C25Y, C31Y and C40Y.
The VW3A7104 braking unit must only be used on drive ratings ATV71H C40Y, C50Y, C63Y and ATV61H C50Y, C63Y and C80Y.
Mechanical installation:
The VW3A7101 braking unit is mechanically mounted on the left-hand side of the drive.
VW3A7102, 103 and 104 braking units are mechanically mounted on the wall or the bottom of an enclosure on the left of the drive.
Braking units must be placed 110 mm (± 5 mm) from the drive. This distance is imposed by the connecting bars supplied with the braking
unit. It is, however, possible to increase the distance up to 1 meter with connecting bars (63 x 5 x 1 mm for VW3A7102 and 104 or 32 x 4 x 1
for VW3A7103)) supplied by the user.
Important: The distance between the flexible bars connecting the BU+ and BU- power must not exceed 10 mm.
Electrical connection:
After the mechanical installation, connect the power section between the drive and the braking unit (BU+ and BU-).
Connect control cables X20, X92, X3, X3A and X3B.
Connect the braking resistor to terminals PA and PB.
Description of the various steps in the mechanical and electrical installation of the VW3A7101
braking unit
1 Mechanically install the drive.
2 Remove the drive cover in accordance with the safety instructions given in this document.
3 Detach removable part A from the left-hand side of the drive.
A
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