11
9.
Electrical Connection
The electronic units are installed in a mounting rack. Each actuator requires a Contrac electronic unit.
Proper actuator operation requires an actuator specific software loaded in the associated electronic
unit. Compare the data labels on both, electronic unit and actuator, in order to ensure a correct hard-
ware and software assignment.
The electrical connection is done with a plug at the actuator and with screw terminals at the electronic
unit.
9.1
General
Disconnect the electronics and the actuator prior to all installation and service works and secure against
unintended switch-on.
9.1.1
Pre-condition
-
Disconnection must be possible on mounting site.
-
All signal cables and the motor cable between actuator and electronics must be shielded at both
ends.
9.2
EAS822 / EBS852
Fig. 7:
Electrical connection (
1)
only for EAS822)
24V
Uv
30
-
+
31
I
U
1
+ - + - + -
+
-
7
2
8
3
9
4
10
13
5
11
14
6
12
15
L
N
U V
W Br Br
PE
17 18 19 20 21 22 23 24
17 18 19 20 21 22 23 24
1
2
3
13 14
M
3~
Uv
24V
+
RB
+ -
28 29
1
2
+
-
RB
+ -
26 27
r00363x1
Han 24 E
Han 10 E
plug
plug
Contrac actuator
Contrac electronic unit
brake
motor
sensors
Optional
heater
approx. 6 W
connect shield at both ends
one-sided shield
in following wiring possible
mains
AC 110...250 V
mains
ext. fuse
AC 115 / 230 V
sub distribution board
MAN/AUT
MAN(+)
MAN(-)
Ok/fail.
endp.0% endp.100%
out
setpoint
+ HART
0/4...20 mA
transmit.
4...20 mA
act. value
0/4...20 mA
DI 1
DI 2
DI 3
DO 1
DO 2
DO 3
1)
