ABB LME620-AI Instrukcja obsługi - Strona 7
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8. Electrical Connection
Each actuator requires a Contrac electronic unit. Proper actuator operation requires an actuator spe-
cific software loaded in this associated electronic unit. See electronic unit instructions for details. Com-
pare the data labels on both, electronic unit and actuator, in order to ensure a correct hardware and
software assignment.
The electrical connection is done with a combined plug on the actuator and with screw terminals on the
electronic unit.
8.1 Integrated electronic unit (standard)
The electrical connection is done with a combined plug on the actuator and with screw terminals on the
electronics.
mains
ext.
(single
fuse
phase)
L
N
MAN/AUT MAN (+)
1
13
+
Fig. 3: Electrical connection, standard
The following steps must be performed to switch the actuator to automatic mode (AUT):
- Activate digital inputs DI 1, DI 2 and DI 3 via the configuration program.
- Make sure that the supply voltage is present on digital input 1 (DI 1).
- Activate AUT mode via the configuration program.
8.2 Integrated electronic unit (bus comunication)
mains
(single phase)
L
1
13
Fig. 4: Electrical connection, PROFIBUS DP
Sub Distribution Board
DI1
DI2
DI3
DO1
MAN (-)
ok/fault
3
4
5
6
7
8
15
16
- +
- +
-
Contrac Actuator
ext.
Bus in
fuse
N
Contrac
Actuator
setpoint
Uv
DO2
DO3
+ HART
end 0%
end 100%
0/4..20 mA
19
20
22
23
17
18
21
+
+
-
24V
B
A
B
bus terminals A...B
7
transmitter
act. value
4..20 mA
0/4..20 mA
9 10
11
12
1
2
-
+
-
+
RB
RB
I
+ -
+ -
Uv
U
24V
(Option)
r00295e2
Bus out
bus termination
A
S1
r00011x1