User guide

46 Design and specifications are subject to change without notice S47183e rev.03 2010-06-07
6.2.3 Layout of control PCB inside control box
Fig. 53 Control box inside (w/o SEL unit)
Slot Control board Z-No. Orientation
1
---
2
NEKO unit (ED trip) 128 750 R1 equipment to left
3
Voltage converter 128 730 R2-R4 equipment to left
4
SU-control unit 128 700 equipment to right
5
---
6
ST/UVR control unit 128 710 R1, R2 equipment to left
Table 5 Layout of control PCBs inside the box w/o SEL
Fig. 54 Control box inside (with SEL unit)
Slot Control board Z-No. Orientation
1
NEKO unit (ED trip) 128 750 R1 equipment to right
2
Voltage converter 128 730 R2-R4 equipment to right
3
SU-control unit 128 700 equipment to left
4
ST/UVR control unit 128 710 R1, R2 equipment to right
5
---
6
SEL control unit 128 785 R1-R2 equipment to left
Table 6 Layout of control PCBs inside the box with SEL
• Warning: The isolation plates between the control
boards and at the wall of the box must always be
present!
• Hint: In older systems, the control boards may be
installed turned 180 °!
6.2.4 Replacement of the control boards
1. OPEN the breaker.
2. Disconnect power supply, and pull out all
the plugs from control box’s terminals.
3. If a NEKO control unit is installed, wait 1
minute until capacitors discharge.
Fig. 55-1 Unscrew and remove all the external plugs
Fig. 55-2 Unscrew four bolts of the box cover
Fig. 55-3 Carefully lower the box cover
Slot numbers:
1 2 3 4 5 6
Slot numbers:
1 2 3 4 5 6