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