ABB TZA 4 Mode D'emploi page 8

The field case IP 65, also made of plastic, features a swivel sup-
port with spring-contact strip for accommodating the 19" plug-in
card (blade connector D). To establish PC connection Via the
serial interface, open the field case, unlock the circuit board,
wing it outwards and connect the appropriate interface conn-
ector. The 19 " plug-in card remains in a swung-out position whi-
le working with the PC.
Fig. 4 Field case IP 65 with 19" plug-in card, closed and open
a) Circuit board interlock
b) Terminals for inputs, outputs and mains (standard version)
c) Terminals for expansion module d) Interface connection
d) interface connection
Fig. 5 Layout of the 19" plug-in card
1 Motherboard (1)
3 Front pane (3)
8 TZA 4, Digital computer / Calculateur de mesure numérique
4.2 Circuit design
Note
The figures in parantheses are identical to the reference figures
of Figs. 5 ... 9
All designs (19,, plug-in card, surface mounting case IP 20, field
case IP 65) have the same type of circuit design on a 19" plug-in
card, featuring the following modules:
– Motherboard (1)
– Mains card (2)
– Front panel (3)
Expansion module (4)
2 Mains card (2)
4 Expansion module (4)
42/-18-40 XL