Covers; Wiring Diagrams (Integrated Electronic Unit) - ABB LME620AI Service Instruction

6.2

Covers

Terminal covers and other components at the Contrac
actuators and electronic units are fastened with 4 or
more screws (only 2 screws for local control panel cov-
er). In some cases they are additionally sealed with a soft
rubber gasket. In order to avoid a gap between the hous-
ing and the cover (or the other component) tighten these
screws evenly crosswise according to the order in the
basic sketch in fig. Fig. 14: to get an even load
- Start with one screw and tighten it slightly. Then tight-
en the 2nd, opposite screw in the same manner. Continue with the remaining screws. Finally tighten
the screws in the same order. This will ensure a tight seal.
6.3

Wiring diagrams (Integrated electronic unit)

6.3.1 HART
The electrical connection is done with a plug on the actuator.
mains
1
Fig. 15:
6.3.2 PROFIBUS DP
Fig. 16:
43/68-13 EN Electrical Linear Actuators for Continuous Modulating Control LME620AI / LME620AN (Contrac)
ext. fuse
L
N
DI1 DI2 DI3
MAN/AUT MAN(+) MAN( )
13
3 4 5 6
+ - + - +
mains
ext. fuse
L N
Contrac actuator
(plug)
1 13
screws
sub distribution board
DO1 DO2 DO3
ok/fault endp. 0% endp.100%
7 8 19 20
17 18
15 16
-
Contrac actuator
Bus in
B A
bus
connection
Electrical Connection
3
2
Fig. 14:Exemplary cover
screen connected to both ends
one-sided screening
in further wiring possible
setpoint
+HART act. pos.
out 0/4...20 mA 0/4...20 mA
22 23
21 9 10 11 12
+ - + -
+
-
RB
I
24V
+ -
U
Bus out
bus termination
B A
S1
1
cover or
similar
component
4
transmitter
4...20 mA
1 2
+
RB
+ -
Uv
24V
(option)
(r00295x1)
(r00011x1)
13