NORD Drivesystems BU0100 - Manual (Page 24)

NORDAC SK 160E
24 Technical modifications observed BU 0100 GB
5 Options / Accessories SK 1xxE
5.1 SK 1xxE on motor with electromechanical brake
When operating an SK 1xxE in conjunction with a brake motor, there are different options to generating the coil
voltage of the brake. An SK 1xxE with integrated brake rectifier can be used or – e.g., in case of special
voltages – an SK 1xxE with separately installed rectifier.
5.1.1 SK 1xxE with integrated brake rectifier
All SK 1xxE with integrated brake rectifier receive –BSG2
(e.g., SK 140E-1-BSG2) as corresponding suffix in the type
designation. A fast acting rectifier (BSG/brake control, half-
wave rectifier) is integrated here in the electronics. The output
brake coil voltage (terminals [Br-] and [Br+]) depends on the
supply voltage of the drive.
Supply voltage 400 VAC Æ Brake voltage 180 VDC
Supply voltage 480 VAC Æ Brake voltage 205 VDC
A separately installed brake rectifier must be used for supply
voltages smaller than 380 V.
The bridge [L] allows conversion to a gradual switch-off.
Bridge [L] open Æ Direct current switch-off, quick cut-in
Bridge [L] closed Æ Alternating current switch-off, gradual cut-in
Type designation:
SK 140E-1-BSG2 Mat. No. 275101405
SK 150E-1-BSG2-3D-T125 Mat. No. . 275101505
SK 160E-1-BSG2-3D-T125 Mat. No. 275101605
5.1.2 SK 1xxE with separately installed brake rectifier
If a separate brake rectifier is contained in a SK 1xxE, the suffix -O (e.g. SK 140E-1-O) is included in the type
designation. No terminals are available here for brake activation. If an electromechanical brake needs to be
activated, a separate rectifier can be mounted on inserted spacers. This separate brake rectifier may be
required for supply voltages smaller than 380 V or when a bridge rectifier is used.
More information on brake rectifiers on drives by NORD can be found in the electric motor catalog M7000/3 DE.
Type designation:
SK 140E-1-O Mat. No. 275101400
SK 150E-1-O-3D-T125 Mat. No. 275101500
SK 160E-1-O-3D-T125 Mat. No. 275101600