Lenze 8400 Manuel d'utilisateur télécharger pdf (Page 129)

Mechanical installation

Standard devices in t he power range 3 ... 22 kW

Mounting i n ”cold plate” technique

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129

EDS84ASC552 EN 9.1

5.3.3 Mounting in ”cold plate” technique

The E84AVxxC... controllers are designed for assembly on coolers (e.g. collective coolers) in

”cold-plate” technique.

Requirements for collective coolers

A good thermal connection to the cooler is important for the trouble-free operation of

the c ontroller:

ƒ The c ontact area between the collective cooler and the controller

– must be at least as big as the cooling plate of the controller.

– must be smooth, the maximum deviation must not exceed 0.05 mm.

ƒ The c ollective cooler must be connected to the controller with all required screwed

joints.

ƒ The thermal resistance R

must be observed, s ee table.

The values in t he table apply to the operation of the controllers under rated

conditions.

The values include the heat transmission between the cooler and the device.

With a standard heat conducting paste and a film thickness of 50 m, the heat

transmission is approx.

– 0.03 K/W for controllers up to 5.5 kW

– 0.02 K/W for controllers up to 15 kW

– 0.01 K/W for controllers up to 22 kW.

Power to be dissipated Thermal resistance

Type P

v[W]

[K/W]

E84AVxxC3024xx0 115  0.33

E84AVxxC4024 155  0.25

E84AVxxC5524 215  0.18

E84AVxxC7524 250  0.15

E84AVxxC1134 355  0.11

E84AVxxC1534 390  0.10

E84AVxxC1834 460  0.057

E84AVxxC2234 540  0.057

Ambient conditions

ƒ The rated data and the derating factors at increased temperature also apply to the

ambient temperature of the drive controllers.

ƒ Temperature at the cooling plate of the drive controller: max. 75 °C.

 Note!

Apply s tandard heat-conducting paste or heat-conducting foil onto cooler and

cooling plate before you bolt the controller onto the cooler.

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Lenze 8400 Manuel d'utilisateur Page 129

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