Siemens SINAMICS V20 Operating Instructions Manual page 30

Mechanical installation
3.3 Mounting a SINAMICS V20 Flat Plate variant
Technical data
Flat Plate variant
6SL3216-5BE17-5CV0
Operating temperature range
Max. heatsink loss
Max. control loss *
Recommended thermal resistance of
heatsink
Recommended output current
* With I/O fully loaded
Installing
1. Prepare the mounting surface for the converter using the dimensions given in Section
"Mounting in a control cabinet (Page 24)".
2. Ensure that any rough edges are removed from the drilled holes, the flat plate heatsink is
clean and free from dust and grease, and the mounting surface and if applicable the
external heatsink are smooth and made of unpainted metal (steel or aluminum).
3. Apply a non-silicone heat transfer compound with a minimum thermal transfer co-efficient
of 0.9 W/m.K evenly to the rear surface of the flat plate heatsink and the surface of the
rear plate.
4. Mount the converter securely using four M4 screws with a tightening torque of 1.8 Nm
(tolerance: ± 10%).
5. If it is required to use an external heatsink, first apply the paste specified in Step 3 evenly
to the surface of the external heatsink and the surface of the rear plate, and then connect
the external heatsink on the other side of the rear plate.
6. When the installation is completed, run the converter in the intended application while
monitoring r0037[0] (measured heatsink temperature) to verify the cooling effectiveness.
The heatsink temperature must not exceed 90 °C during normal operation, after the
allowance has been made for the expected surrounding temperature range for the
application.
Example:
If the measurements are made in 20 °C surrounding, and the machine is specified up to
40 °C, then the heatsink temperature reading must be increased by [40-20] = 20 °C, and
the result must remain below 90 °C.
If the heatsink temperature exceeds the above limit, then further cooling must be
provided (for example, with an extra heatsink) until the conditions are met.
Note
The converter will trip with fault condition F4 if the heatsink temperature rises above 100
°C. This protects the converter from potential damage due to high temperatures.
28
Average power output
370 W 550 W
-10 °C to 40 °C
24 W 27 W
9.25 W 9.25 W
1.8 K/W 1.5 K/W
1.3 A 1.7 A
Operating Instructions, 10/2019, A5E34559884-012
750 W
31 W
9.25 W
1.2 K/W
2.2 A
SINAMICS V20 Converter