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18 Operation principle and hardware description
Overview of power and control connections
The diagram below shows the power and control connections of the brake chopper module.
–
+
Item
Description
X1
Chopper enable input
X3
Fault indication relay output
V22
Fiber optic cable connection: Chopper control sig-
nal to another chopper (Transmitter)
V23
Fiber optic cable connection: Chopper control sig-
nal from another chopper (Receiver)
NBRC
X3
1
2
3
UDC-
UDC+
R+
V22
V23
R-
t°
Additional information
See section
Protecting the system against thermal
overload (page
27).
See section
Controlling the brake chopper from an
external control location (page
X2
1
2
t°
X1
1 2
28).
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