Serial Line; Ct Inputs; Auxiliary Inputs - gefran 850 Installation And Instruction Manual

Digital inputs
IN5
IN4
IN3
IN2
IN1
COM
GND
2.4.6.

Serial line

Serial line
46
B (Data +)
47
48
A (Data -)
2.4.7.

CT Inputs

Inputs CT1, CT2
~
36
CT1
~
35
~
34
CT2
~
33
32
31
2.4.8. Auxiliary inputs (AUX1)
Input TC [with option auxiliary input = 1]
6
5
4
27
+
26
25
-
41
Digital Inputs PNP
42
+12/24 V
43
max 3,6 mA
44
45
46
7
8
9
Serial line
RS485 2-wires
Current transformer
50 mAac, 10 , 50/60 Hz
Second current transformer
for 2-phase / 3-phase load
Available thermocouples:
J, K,R, S, T, C, D, B, E, L, L-GOST,
U, G, N,
Pt20Rh-Pt40Rh
ITS90 or custom linearization
Respect polarity
For extensions, use a compensated
cable
80209C_MHW_850-1650-1850_20-2020_ENG_pag. 32
Input PT100/JPT100 - 2-wires connection
[with option auxiliary input = 1]
Input PT100/JPT100 - 3-wires connection
[with option auxiliary input = 1]
6
5
4
27
T
26
25
Linear input (V) [with option auxiliary input = 1]
6
Linear input in direct voltage
0...60 mV
5
4
27
+
26
25
-
Linear input (V, I) [with option auxiliary input = 2 o 3]
6
Linear input in direct voltage
5
0...1 V
4
27
Linear direct current input
+
0/4...20 mA,
26
25
-
6
Linear input (V) [with option auxiliary input = 2 o 3]
5
Linear input in direct voltage
+
28
0...5 V / 0...10 V
27
26
25
-
Attention:
with this type of connection the
line resistance can introduce
measurement error, we recommend
that you use wires of adequate screen.
Attention:
with this type of connection the line
resistance can introduce measurement
error, we recommend that you use
wires of adequate screen.
The resistance of the three wires must
be equal, the line resistance must be
less than 20 ohm.
Ri > 100 MΩ
Ri > 400 KΩ
Ri = 50 Ω.
Ri > 400 KΩ