Lenze 8400 - Manual (Page 103)

Mechanical installation
Standard devices in a power range of 0.25 ... 3 kW
Mounting in ”cold plate” technique
5

103 EDS84ASC552 EN 9.1
5.2.3 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 controller:
ƒ The contact 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 collective cooler must be connected to the controller with all required screwed
joints.
ƒ The thermal resistance R
th
must be observed, see table.
The values in the 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]
R
th
[K/W]
E84AVxxC2512 15  1.5
E84AVxxC3712 20  1.5
E84AVxxC5512 30  1.0
E84AVxxC7512 40  1.0
E84AVxxC1122 60  0.6
E84AVxxC1522 75  0.5
E84AVxxC2222 100  0.4
E84AVxxC3714 25  1.0
E84AVxxC5514 35  1.0
E84AVxxC7514 50  1.0
E84AVxxC1124 60  0.6
E84AVxxC1524 70  0.5
E84AVxxC2224 100  0.4
E84AVxxC3024xxS 100  0.4