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

Digital inputs
COM
GND
IN3
IN2
IN1
2.3.6.

Serial line

Serial line [with (M) = M0 communication option]
18
B (Data +)
17
A (Data -)
2.3.7.

CT Inputs

CT inputs [option]
10
~
CT1
11
~
CT2
12
~
2.3.8.

Auxiliary inputs

TC auxiliary input
6
with options (H-I) = 01
5
Available thermocouples::
4
J,K,R,S,T,C,D, B, E, L, L-GOST, U, G,
10
N, Pt20Rh-Pt40Rh
+
ITS90 or custom linearization
11
12
Respect polarity
-
For extensions, use a compensated
cable.
PT100/JPT100 Auxiliary input - 2-wires connection
6
[with options (H-I) = 01]
5
4
10
T
11
12
16
PNP digital inputs
15
+12/24 V max 3,6 mA
14
13
Serial line
RS485 2-wires
Current transformer
50 mA, 10 Ω, 50/0 Hz
second current transformer
for 2-phase /3-phase load
0... 60 mV Ri > 100 MΩ
Attention:
with this type of connection the
line resistance can introduce
measurement error, we
recommend that you use wires of
adequate screen
80209C_MHW_850-1650-1850_20-2020_ENG_pag. 28
PT100/JPT100 Auxiliary input - 2-wires connection
[with option (H-I) = 01]
6
5
4
10
T
11
12
6
Auxiliary linear input (V, I) [with option (H-I) = 02, 03]
5
4
10
+
11
12
-
6
Potentiometer VP or transmitter VT2 supply
5
4
+
10
11 VP o VT2
12
-
2.3.9.

Auxiliary outputs

Output Out 4 - logic
7
8
-
+V
L
+
9
Output A1 - analogue
7 +
8
-
9
3
2
Attention:
with this type of connection the
line resistance can introduce
measurement error,we recommend
that you use wires of adequate
screen. The resistance
three wires must be equal, the line
resistance must be less than 20 ohm.
linear input voltage
0...1 V Ri > 400 KΩ
0...5 V / 0...10 V Ri > 400 KΩ
Linear input in direct current
0/4...20 mA Ri = 50 KΩ
VP = 1 VDC ±1%, max 30 mA
[with option (H-I) = 02]
VT2 = 24 VDC ±10%, max 30 mA
[with option (H-I) = 03]
Logic 24 V ±10%
(min 10 V a 20 mA)
0...10 V, max 20 mA Rout > 500 Ω
0...20 mA / 4...20 mA Rout < 500 Ω
of the