Connections And Interference Suppression - Siemens SINAMICS G120D Operating Instructions Manual

EMC cable glands
Where cable glands are used within the installation of the system, it is recommended that
EMC glands are used.
The cable gland provides protection to the IP68 standard when fitted correctly.
Figure 4-17
Table 4- 16
M16 x 1.5
M20 x 1.5
M25 x 1.5
M32 x 1.5
4.2.15

Connections and interference suppression

All connections should be made so that they are permanent. Screwed connections on
painted or anodized metal components must be made either by means of special contact
washers, which penetrate the isolating surface and establish a metallically conductive
contact, or by removing the isolating surface on the contact points.
Contactor coils, relays, solenoid valves, and motor holding brakes must have interference
suppressors to reduce high-frequency radiation when the contacts are opened (RC elements
or varistors for AC currentoperated coils, and freewheeling diodes for DC current-operated
coils). The interference suppressors must be connected directly on each coil.
Converter with control units CU250D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34261542B AB
Example of a Blueglobe EMC cable gland
Brass-nickel plated EMC cable gland with metric thread as per EN50262.
Connection thread/length
A D [mm] C [mm]
6.0 29
6.5 29
7.5 29
8.0 32
Clamping range Clamping
without inlet range max/min
max/min [mm] [mm]
11 ... 7 9 ... 7
14 ... 9 12 ... 7
20 ... 13 16... 10
25 ... 20 20 ... 13
Installation
4.2 Electrical Installation
Spanner Order No.
width SW *
E
20 x 22.2 bg216mstri
24 x 26.5 bg220mstri
30 x 33 bg255mstri
36 x 39.5 bg232mstri
55