oventrop Regtronic BS/2-B, Installation And Operating Instructions Manual, Page: 27 / 68

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1.3 Data communication/ Bus
The controller is equipped with a S-Bus for data transfer
with and energy supply to external modules. The connec-
tion is carried out at the terminals marked “S-Bus” (either
polarity). One or more S-Bus modules can be connected via
this data bus, such as
• CS-BS Datalogger
1 2
S1 S2 S3
3 4 5 6
Temp. Sensor Pt1000
L N R1 N
20 19 18 17
S4
7 8 14 13 12
T4A
S-Bus
9 10
1 (1) A 100 ... 240 V~
100 ... 240 V~
50-60 Hz
IP 20
CU 72091163 01
S-Bus
connection terminals
The controller is equipped with a semiconductor relay,
to which a load such as a pump, a valve etc. can be con-
nected:
• Relay 1
18 = conductor R1
17 = neutral conductor N
13 = ground conductor
The mains supply is to be carried out at the terminals:
19 = neutral conductor N
20 = conductor L
12 = ground terminal
The temperature sensors (S1 up to S4) are to be
connected to the following terminals with either polarity:
1 / 2 = Sensor 1 (e.g. Sensor collector)
3 / 4 = Sensor 2 (e.g. Sensor store)
5 / 6 = Sensor 3 (e.g. Sensor store top)
7 / 8 = Sensor 4 (e.g. Sensor return)
All Pt1000 temperature sensors are equipped with a
platinum measuring element in their tip. The electrical
resistance of the measuring element changes in relation to
the temperature (see table in chap. 5).
The difference between FKP and FRP type sensors only
lies in the cable insulation material. The insulation material
of FKP type sensor cables resists a higher temperature, so
that FKP type sensors should be used as collector sensors.
FRP type sensors are best used as reference sensors in
stores or pipes.
1 2
S1 S2 S3
3 4 5 6
Temp. Sensor Pt1000
L N R1 N
20 19 18 17
S4
7 8
14 13 12
T4A
S-Bus
9 10
1 (1) A 100 ... 240 V~
100 ... 240 V~
50-60 Hz
IP 20
CU 72091163 01
1 2
S1 S2 S3
3 4 5 6
Temp. Sensor Pt1000
L N R1 N
20 19 18 17
S4
7 8
14 13 12
T4A
S-Bus
9 10
1 (1) A 100 ... 240 V~
100 ... 240 V~
50-60 Hz
IP 20
CU 72091163 01
Sensor terminals S1 ... S4
Grounding and load terminals