Installation
12
—
English
Servimat M/L — 28.01.2021
Terminal
number
Signal
Function
Wiring
10
Y3
3-way motorized ball valve
Factory-
provided
11
N
12
PE
13
Dry-run protection message
(floating)
User supplied
14
15
M1
PU 1 pump
Factory-
provided
16
N
17
PE
18
M2
---
---
19
N
20
PE
21
FB1
Pump 1 voltage monitoring
Factory-
provided
22a
FB2a
Pump 2 voltage monitoring
Factory-
provided
22b
FB2b
External make-up request
together with 22a
Factory-
provided
23
NC
Group message (floating)
User supplied
24
COM
25
NO
27
M1
Flat plug for supply, pump 1
Factory-
provided
31
M2
Flat plug for supply, pump 2
Factory-
provided
35
+18 V (blue)
Analogue input, LIS level
measuring
at the primary tank
User supplied
36
GND
37
AE (brown)
38
PE (shield)
39
+18 V (blue)
Analogue input, "PIS" pressure
measuring
at the primary tank
User, optional
40
GND
41
AE (brown)
42
PE (shield)
43
+24 V
Digital inputs
User, optional
44
E1
E1: Contact water meter
Factory-
provided
45
E2
Insufficient water switch E2
(LSL)
---
51
GND
---
---
52
+24 V (supply)
53
0
–
10 V
(correcting
variable)
54
0
–
10 V
(feedback)
55
GND
Pressure relief valve (control
ball valve RKH1)
Factory-
provided
56
+24 V (supply)
57
0
–
10 V
(correcting
variable)
58
0
–
10 V
(feedback)
6.4.2
Terminal plan, operating unit
1
RS-485 interfaces
2
I/O interface
3
I/O interface (reserve)
4
Micro SD card
5
10 V supply
6
Analogue outputs for Pressure and Level
7
Battery compartment
8
Bus module supply voltage
9
RS
–
485 connection
10
RS
–
485 connection
Terminal number
Signal
Function
Wiring
1
A
RS-485 interface
S1 networking
User
supplied
2
B
3
GND S1
4
A
RS-485 interface
S2 modules: Expansion or
communication module
User
supplied
5
B
6
GND S2
7
+5 V
I/O interface: Interface to the
main board
Factory
8
R × D
9
T × D
10
GND IO1
11
+5 V
I/O interface: Interface to the
main board
(reserve)
---
12
R × D
13
T × D
14
GND IO2
15
10 V~
10 V supply
Factory
16
17
FE
18
Y2PE
(shielding)
Analogue outputs: Pressure
and Level
Standard 4
–
20 mA
User
supplied
19
Pressure
20
GNDA
21
Level
22
GNDA
