Braking operation
Braking operation with external brake resistor
Wiring of brake resistor
154
EDS84DPS424 EN 5.0
Wiring principle
R
B
RB
1
RB
2
<
0.5
m
PE
T
1
T
2
R
B
RB
1
RB
2
<5m
PE
PES
PES
T
1
T
2
ERBG008
ERBG007
Fig. 9−2
Wiring of a brake resistor to the controller
PES
HF−shield termination by PE connection via shield clamp
Rb1, Rb2
Terminals of the brake resistor
Supply cable to the controller
T1, T2
Terminals temperature monitoring of the brake resistor (thermal contact/NC
contact)
Supply cable for evaluation of temperature monitoring
(to be integrated e.g. into the latch circuit of the mains contactor of the supply)
The brake resistor is thermally stressed due to converted braking power and may be
thermally destroyed as a consequence of excessive braking power.
To avoid thermal overload of the brake resistor:
ƒ
set additional parameters in the »Engineer«
or
ƒ
implement external wiring using a temperature contact on the brake resistor (e.g.
interrupted supply and activation of the mechanical brakes).
To protect the brake resistor:
ƒ
use the monitoring of the I
2
xt utilisation of the controller which is proportional to
the converted braking power.
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