7
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.
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)
Fig. 4: Electrical connection, PROFIBUS DP
r00295e2
24V
11
+
-
-
+
RB
+ -
12
I
U
9 10
3
1
+ - + - + -
+
-
15
4
13
16
5
17
6
18
21
7
19
22
8
20
23
L
N
Uv
24V
+
RB
+ -
1
2
Sub Distribution Board
Contrac Actuator
ext.
fuse
mains
(single
phase)
DI1
DI2
DI3
DO1
DO3
DO2
Uv
setpoint
+ HART
0/4..20 mA
act. value
0/4..20 mA
transmitter
4..20 mA
Ha
n1
0E
insert
(Option)
Han24E
inse
rt
MAN/AUT MAN (+)
MAN (-)
ok/fault
end 0%
end 100%
1
13
L
N
B
B
A
Bus in
Bus out
A
S1
r00011x1
ext.
fuse
mains
(single phase)
Han24E
inse
rt
re
d
gr
ee
n
re
d
gr
ee
n
bus termination
Contrac
Actuator
bus terminals A...B
