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EBS852 / EBS862
ELECTRONIC UNIT | OI/EBS852/EBS862/EX-EN REV. B
23
Electronic unit EBS852 (Contrac) / EBS862 (Contrac)
Note
• The electrical connection is established via screw terminals on the control actuator and on the electronic unit.
• If you are using a separate heat supply, the heater must be protected with a 2 to 6 A medium time-lag fuse (e.g.
NEOZED D01 E14
).
M10210
SDB241-B
+28 29
RB
+ -
Uv
24V
24V
J
+26 -27
RB
+ -
+30 -31
I
U
7
8
9
11
12 13 +14 -15
10
1
2
3
5
6
U1
V1 W1 BA1 BA2
2TP1 2TP2
17
18 19
20
22
21
24
23
17
19 20
22
21
24
23
1HE1 1HE2
1
2
L
N
3~ M
PE
PE
PE
+1 -2
+3 -4 +5 -6
U
V
W
Br
Br
4
Motor
Brak
e
Contrac Ex-actuator
Sensors
Ex
non-Ex
Heater approx 6 W (option)
see additional note on this page
Screen connected to both ends
one-sided screening
in further wiring possible
Transmitter
4 ... 20 mA
Setpoint
+ HART
0/4 ... 20 mA
act. pos.
0/4 ... 20 mA
DO 1
o.k./fault
DO 2
endpos.
0%
DO 3
endpos.
100%
DI 1
/
MAN AUT
DI 2
(+)
MAN
DI 3
(-)
MAN
Uv
out
Sub distribution board
Contrac electronic unit
e
x
ternal
fuse
Motor connection chamber
Sensor connection chamber
115 V
/
AC
230 V AC
110 ... 230 V AC
BE = digital input
BA = digital output
Figure 11: Control via analog input 0/4 to 20 mA, HART® communication or digital inputs