BCU 440 · Edition 01.17 32
88
200 mm (7.87")
A
55
mm
B
C
D
E
200 mm (7.87")
50
mm
(1.97")
(2.17")
 4,5 mm
0.177"
163 mm
6.42"
185 mm
7.28"
Technical data
9.2 Housing dimensions
Die-cast aluminium housing with plug-in terminal 
blocks and plug-in M20 cable glands or (16-pin) plug 
connector for input signals and optionally pre-assem-
bled cables for output signals.
9.3 Operating controls
A:  Optical interface.
B:   Labelling field for individual labelling of the system 
components.
C:  2-digit 7-segment display.
D:   Mains switch to isolate the BCU on two poles from 
the mains.
E:   Reset/Information button to reset the system after 
a fault or to scan parameters on the display.
9.4 Installation
Recommended installation position: vertical (cable 
glands pointing downwards).
Open the BCU and attach with four screws Ø 4 mm or 
screw on the closed unit using the external securing bar, 
see page 27 (Accessories).
Electrical connection via plug-in connection terminals 
(2.5 mm²) and plug-in cable glands. The latter can be 
removed in order to facilitate installation. When install-
ing, ensure that there is sufficient space to open the 
BCU.