Ge Brake Rectifiers (Normal Excitation); Gp Brake Rectifiers (Normal Excitation For Pole-Changing Motors) - DEMAG ZBA Assembly Instructions Manual

Brake control module overview
Assignments
Excitation modules
Type
GE
GP
GS
GF
GU
-
-
5.1.1 GE brake rectifiers (normal
excitation)
5.1.2 GP brake rectifiers (normal
excitation for pole-changing
motors)
14
Switch-off modules
Type Component
- Brake rectifi er
- Brake rectifi er
- Brake rectifi er
- Combined module
- Brake rectifi er
SE Current relay
VE Voltage relay
GE brake rectifiers are used for single-speed motors as standard, and for pole-
changing motors that have a separate power supply up to brake size:
• B050 for ZBA motors
• B140 for ZBF motors.
The GE module mainly consists of a half-wave rectifier with an integrated free-
wheeling circuit.
IMPORTANT. Switching between terminal 1 or 2 and the brake coil is not
i
permitted.
The connections to contacts 3 and 4 must not be interchanged for connection of
SE or VE modules.
When used with a pole-changing motor, GE modules must be provided with a
separate power supply or according to connection diagram 037 860 84 (see
section 5.5).
No additional cables are necessary when SE units are used.
GP brake rectifiers can be used parallel to the motor winding for pole-changing
motors that have separate windings. They are used up to brake size B050 for ZBA
motors and B140 for ZBF motors.
In this case, both windings must be connected to one phase on the terminal board
(e.g. 1U & 2U). The advantage of using a GP brake rectifier compared to a GE
module is that no additional cables are required for the power supply.
GP rectifiers mainly consist of two half-wave rectifiers which are connected
depending on the winding being used.
IMPORTANT. Switching between terminal 1 or 2 and the brake coil is not
i
permitted.
The connections to contacts 3 and 4 must not be interchanged for connection of
SE modules.
No additional cables are necessary when SE units are used.
Brief description
Function
Normal excitation
Normal excitation for pole-changing motors
High-speed excitation
Normal excitation for pole-changing motors and motor cur-
rent-dependent high-speed switch-off
Control possible via 24 V/DC from installation or inverter
Motor current-dependent high-speed switch-off
Voltage-dependent high-speed switch-off