3.5
Brake rectifier connection
The brake rectifier must have its own power supply lead, supply of the brake rectifier from the
motor voltage is not permitted!
Basic circuit diagram: AC squirrel-cage motor with brake rectifiers BG/BGE
via brake relay K1 and brake contactor K12.
a) Switch-off in the AC circuit
b) Switch-off in the AC and DC circuits for very
short brake reaction times
Fig. 3: Brake circuits
00403AEN
Binary output X1:8 or X1:9 “S_OUT” can be used to control the brake if programmed accordingly
(parameter PARA 62/63 = “2"). For brake control an external 24 V supply is necessary.
The binary output drives an external brake relay K1 (24 V / 1.2 W / max. 50 mA). This relay controls
the brake via a brake contactor K2. The brake must be actuated through the inverter output signal
and not via PLC!
When the brake rectifier is installed in the switch cabinet follow the instructions for EMC-compliant
installation contained in the installation instructions for “AC Squirrel-Cage and Single-Phase Motors, ...”.
MOVITRAC 0500
®
1
2
3
4
5
BG/
BGE
M
MOVITRAC 0500
®
1
2
3
4
5
BG/
BGE
M
L1
L1
L1
N
L1
N
N
U
W
V
U
W
V
N
K 1
24 V
+
-
K 2
K 1
X1:11
X1:8
K 1
24 V
+
-
K 2
K 1
X1:11
X1:8
3 phase
3 phase
White
Red
Blue
Brake
White
Red
Blue
Brake
3
Electrical Installation
10
MOVITRAC
®
0500 - Operating Instructions
