Appendix
Overview of accessories
11
158
EDBCSXE040 EN 6.0
Brake resistors of type ERBS...
Brake resistors with an increased power loss in IP65 design (NEMA 250 type 4x)
Rated data Type
Brake resistor
ERBS082R780W ERBS039R01K6 ERBS020R03K2
Resistance R
B
[Ω] 82 39 20
Continuous power P
d
[W] 780 1640 3200
Heat quantity Q
B
[kWs] 117 246 480
Max. running time t
e
[s] 15
Required recovery time t
a
[s] 135
Operating voltage U
max
[V
DC
] 800
Max. braking power P
Bmax
[kW]
P
Bmax
+
HeatquantityQ
B
runningtime
11.3.7 Mains fuses
Fuses are not offered by Lenze. Please use standard fuses.
Observe the national and regional regulations (VDE, UL, EVU, ...).
Only circuit−breakers or UL−approved fuses can be used for cable protection.
In UL−approved systems, only UL−approved cables, fuses and fuse holders are to be used.
11.3.8 Mains chokes
It is not mandatory to use a mains choke for operating the ECS modules. The respective
application determines whether a mains choke is required or not.
Advantages when using a mains choke:
ƒ Lower system perturbations
– The waveform of the mains current is approximated to the sinusoidal shape.
– Reduction of the effective mains current by up to 25%.
– Reduction of the mains, cable and fuse load.
ƒ The effective DC−bus current also decreases by up to 25%.
ƒ Increased service life of the connected axis modules
– A mains choke reduces the AC current load of the DC−bus capacitors and thus
increases their service life.
ƒ Low−frequency radio interference voltages are reduced.
Please note:
ƒ With mains choke operation the maximally possible output voltage does not fully
reach the value of the mains voltage.
ƒ For operation of drives for accelerating duty with high peak currents, it is
recommended to use mains chokes with linear L/I characteristic (Lenze types
ELN3...).
ƒ The choke rating is to be checked and adapted to the respective conditions.
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