Siemens ST750 - Table 11 - Phase Drive SK2 Connector no Dimming; Table 12 - Phase Drive SK2 48 V Dimming Connections

ST750 GENERAL HANDBOOK
667/HB/33750/000 Page 79 Issue 6
Coding Details: Connector PL1 has no coding elements, as it is the only 3-way
connector and can only be inserted one way.
Table 11 – Phase Drive SK2 Connector No Dimming
If the installation has no Dimming Transformer, then insert the Cableform
667/1/27868/002. This cable is provided as standard with rack assemblies. Cabinet
assemblies have a dimming transformer fitted as standard, which includes the cable
667/1/27868/000. See Table 12 below for details.
SK2
Pin No
Softwire kit
Cableform 667/1/27868/002
Connection
1
-
2
-
3
Short to pin 6
4
Short to pin 5
5
Short to pin 4
6
Short to pin 3
7
-
8
-
9
-
10
-
Table 12 – Phase Drive SK2 48V Dimming Connections
Normally the ST750 in its own cabinet is fitted with the cable 667/1/27868/000
described below (see also Figure 28):
SK2
Pin No
48V Dimming Transformer’s I/P
Softwire kit
Cableform 667/1/27868/000
Colour
Dim Transformer
Connection
1
Dim I/P 1
Red
I/P1
2
Dim I/P 2, 3 or 4
Brown
I/P 2 etc
3
Dim Relay Common
Short to pin 5
4
Dim Relay n/c
Short to pin 6
5
B Relay O/P
Short to pin 3
6
Lamp Supply
Short to pin 4
7
Neutral
Black
Neutral
8
Not used
9
48V Supply
Yellow
48V
10
48V Return
Orange
0V