Contrel EMA90, User Manual, Page: 24 / 64

EMA90 - USER MANUAL
-24-
8.3) OPTION ANALOG OUTPUT 1AO / 2AO
Two options are available: one analog output (1AO) or two analog outputs (2AO).
The analog outputs are optional and they can be programmed as showed in the chapter 11.11) (0-
20mA or 4-20mA). In this configuration the instrument will be equipped with 2 digital inputs, 2 digital
outputs and 1 (or 2) analog outputs.
Outputs are at galvanic insulation with maximum load impedance of 500
Ω
. The connection to other
peripherals as recorders, ammeters, remote indicators etc., must be carried out using a maximum
cable size of 2.5mm
2
.
If long distances must be covered, the wires connected to the EMA90 needs to be wired in a separate
channel from the power supply cables, if an intersection occurs between the power supply cable and
the analog wires, please remember to cross the intersection at 90 degrees, in order to cut the
generated magnetic fields.
T
x
Max
500
Ω
4÷20mA
0÷20mA
N
L N
S1 S2 S1 S2 S1 S2
I1 I2 I3
L1V
2 3
4
5 6 8 9
10
11 12 7 1
L2V
L3V
D
i1
+
D
i1
-
D
i2
+
D
i2
-
A
Vaux
Do2-
Do2+
B
CE
Ao1-
Ao1+
D
o
1
-
D
o
1
+
Ao1-
Ao1+
Do2-
Do2+
R
x
g
n
d
T
x
Max
500
Ω
4÷20mA
0÷20mA
N
L N
S1 S2 S1 S2 S1 S2
I1 I2 I3
L1V
2 3 4 5 6 8 9 10 11 12 7
1
L2V
L3V
D
i1
+
D
i1
-
D
i2
+
D
i2
-
A
Vaux
Do2-
Do2+
B
CE
Ao1-
Ao1+
D
o
1
-
D
o
1
+
Ao1-
Ao1+
Max
500
Ω
4÷20mA
0÷20mA
Ao2-
Ao2+
Ao2-
Ao2+
R
x
g
n
d
Do2-
Do2+