Operation With Brake Chopper Emb9352: Maximum Running Times - Lenze 9350 Series Operating Instructions Manual

Operation with brake chopper EMB9352: Maximum running times

4.2.2 Operation with brake chopper EMB9352: Maximum running times
(
Stop!
Failure of the brake chopper or the brake resistor if the maximum
running times are exceeded.
If the maximum running time of the brake chopper or the brake
resistor are exceeded, the components will be overloaded.
Possible consequences:
ƒ
Protective measures:
ƒ
ƒ
ƒ
EDBMB935X DE/EN/FR 11.0
The components fail.
Always implement the temperature monitoring of the brake
resistor into the emergency stop chain.
Comply with the running time t
resistor.
2
– t = Q /(V /R
on,max B
– Q , R , P : see technical data of the brake resistor.
B B D
Operation with brake resistor R
– Comply with the running time t
brake chopper.
– t + t = 3 s (¶ Fig. 1).
on off
l
Technical data
and dead time t
on
), t + t = Q /P
B on,max off B
< 54 W:
B
and dead time t
on
Rated data
of the brake
off
D
of the
off
4
67