Lenze ERBM R W Série Instructions De Montage page 26

2 Safety instructions
Residual hazards
(
Stop!
Possible overheating of the brake resistor during
operation
Inadequate heat dissipation during operation can
cause the brake resistor to overheat.
Possible consequences:
The brake resistor is destroyed.
ƒ
The drive is not braked but coasts to a standstill.
ƒ
Protective measures:
Always connect the thermal contact of the brake
ƒ
resistor.
Integrate the thermal contact into the overall
ƒ
equipment monitoring apparatus in such a way
that the supply of power to the standard device
is switched off if the brake resistor overheats (e.g.
switch−off by means of mains contactor control).
O
Warnings!
Conditions of Acceptability:
The products covered by this report are intended
ƒ
for use with Power Conversion Equipment (drives)
only.
The Temperature Switch must be connected to
ƒ
the drive, so that the drive switches off in case
when the maximum operating temperature is
exceeded.
Temperature tests and abnormal operation tests
ƒ
have only been conducted for single resistive
elements (ALW 40 and ALW 80) and for
continuous duty as indicated under RATINGS. For
any grouping of ALW 40 and ALW 80 an
additional temperature test must be conducted,
depending on the evaluation of the mechanical
construction and the expected temperature rise.
For any duty cycle operation in the end−use
ƒ
application it must be guaranteed that the
maximum Wattage rating will not be exceeded.
This may be evaluated by calculation. If there will
be any concern regarding to this, additional
temperature tests have to be conducted under
end−use conditions.
These devices should be used within their
ƒ
recognized ratings as specified above.
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EDKRBM470R DE/EN/FR 6.0