Lenze ERBSxxxRxxxx - Manual (Page 11)

Sicherheitshinweise
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11 EDKRBS470R DE/EN/FR 8.0
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Warnings!
Conditions of Acceptability − when used in the end−product
equipment, the following are among the considerations to be
made:
ƒ The nominal loads of the resistors refer to conditions where the
surrounding temperature does not exceed 40 °C. If the
temperature exceeds 40 °C, contact LENZE for advice regarding
de−rating of nominal power.
ƒ The surface temperature must not exceed 355 °C at any point of
the metal housing, as the insulation material inside the resistor
is rated 600 °C maximum. The resistor housing reaches up to
335 °C at nominal load.
ƒ These devices are enclosed type devices. Check that the surface,
which the resistor is mounted on, can withstand the high
temperature radiation and convection from the resistor surface.
To protect personnel from contact with high temperature parts
the resistors must be mounted minimum 6.5 feet (2 m) from the
floor.
ƒ A clearance of minimum 200 mm below and at each side and
500 mm above the resistors must be observed.
ƒ The equipment must be properly connected to earth ground in
the end−use equipment.
ƒ The thermal cut−out, if provided, protects the resistor from
destruction when over loaded at normal conditions. The
suitability of the thermal cut−out at motor drive fault must be
determined in the end−use application.
ƒ The resistors are intended to be mounted with the longest side
vertically or horizontally. Nominal load refers to the vertical
position. Horizontal position requieres a load reduction of 20 %. If
mounted vertically the connection box must face downwards.
ƒ The resistors with protection class 4X / IP65 can be mounted in
any allowed position whereas the 1X / IP21 types only meet the
IP21 requirements when mounted vertically.
ƒ Nominal load refers to mounting of a single resistor. If two or
more resistors are mounted next to each other de−rating
according to the above mentioned maximum surface
temperatures are necessary.