Type / N°
Rev.
Fw
Date
Page
Total pages
EW055.600D
D
4L
6
th
June 2018
5
43
EsiWelma
®
s.r.l.
Figure 1:
Summary electric connections
to Display
Connector
J1
Display-1
Keyboard Interface
SET - UP
Keypad
Display-2
L
p.u.
/L
L
p.u.
/L
TB2
TB3
TB6
TB4
TB1
TB7
TB8
Fi
el
d
Li
nks
Power Links
Display Link
J1
TB1
5 not Used
4 Tx
3 Rx
1 Aut/Man
2 0V Field
TB2
Inputs available for
new applications
TR1
PT100
Temperature 2
(Optional)
Temperature 1
TR2
PT100
6 0VField
5 TR2-
2 TR1-
3 0VField
4 TR2+
1 TR1+
TB4
Computing Head
TW1 CPU Board
3 EV2 - 2 Level
1 Electrovalves Common
4 EV3 - 3 Level
TB6
2 EV1 - 1 Level
3 G
re
e
n
1 Lam
p
C
o
m
m
o
n
TB7
2 R
e
d
Lamp Power Supply
230Vac o 24Vac
Electrovalves Power Supply
230Vac o 24Vac
3 G
n
d
1 P
h
a
s
e
TB8
2 N
e
u
tr
a
l
Computer Head
Power Supply
230Vac
I
mp
ulsiv
e
M
as
s
F
lowme
te
r
7 not Used
6 0V Flow Meter
8 Max Pressure
TB3
5 not Used
4 IN from IMF
3 not Used
1 Nozzle
2 0V Field
Pulse Version
ModBus Version
ModBus
- Mass +
Flowmeter
2 0V Field
1 Nozzle
3 +12Vcc Flow Meter
4 RS485 - A
5 RS485 - B
TB3
8 Max Pressure
6 0V Flow Meter
7 not Used
2
1
PT
ATMxi
0-400bar
VART286-5
Flow Pressure
2 IN2 N.U. (4-20mA)
1 IN1 PT (4-20mA)
3 0V Field
4 +24V Field
TB5
TB5
5 Low Flow
See NOTE
§ 7.1
See NOTE
§ 7.1
nd
rd
st
} {
or
Optional
Failure Output
I/O Expansion
board
8
7
6
5
4
3
2
1
0V
Auto/Man (Auto=closed)
Reset (NO)
Dead-Man control (NO)
Self-Service
connections
0V
N.U.
N.U.
N.U.
Self-Service
Device
2
3
0V
Temp. N.O.
N.O.
1
Au
t
Reset
Man
4x4 Keyboard
8
7
6
5
4
3
2
1
9
0
,
5
6
8
7
3
4
2
1
Delete
Euro
Litres
Enter
C3
C2
C1
C0
R2
R1
R0
NC
R3
Not
Used
The box containing the devices
enclosed in the dotted line must
have protection degree IP54
