3
Installation
EM100 – 6720891034 (2019/04)
17
3.4.3 Overview of the terminal assignment
This overview indicates which system parts can be connected.
Depending on what the module is used for (coding at the
module and configuration via the control unit), connect the
system parts as specified in the corresponding connection
diagram.
Caption to the figure above and connection diagrams with
system schematics at end of document:
Earth connection
Connecting terminal designations:
230 V AC Mains voltage connection
BUS
BUS
system connection
BMS
B
uilding
M
anagement
S
ystem with 0-10 V interface
HS
H
eat
S
ource on BUS system
OE1-74
Mains voltage output, solenoid valve
OE1-75
Fault output (230 V)
PC0
Mains voltage output, pump (230 V)
1)
IE0
Pump alarm output
OP0
Pump on/off (output/potential-free contact ≤ 24 V)
T0
Low loss header temperature sensor input
2)
IO1-1,2
Heat source feedback output (0–10 V)
IO1-3,4
Heat source activation input (0–10 V)
OC0 1-2 Pump control signal output (0-10 V/PWM)
3)
OC0 1-3 Pump check-back signal input (PWM), optional
3)
CON
Control unit with BUS system (
Con
troller)
MC
Boiler control device (
M
aster
C
ontroller)
MM 100 Heating circuit module (EMS/EMS plus)
EM100
Extension module
T0
N
L
N
N 74
N 63
75
L
120/230VAC 120/230VAC
OE1
PC0
1
2 1
2
1
2
IE0 OP0
BUS
1
2
T0
120/230 V AC
≤ 24 V
IO1
IO1
≤ 24 V
2
1
3
2
3
IO1
4
1
OC0
EM100
230 VAC
BUS
230 VAC
0-10 V 0-10 V
(+) (–)
1
2
(+) (–)
3
4
0
1
2
3
4 5 6
7
8
9
10
OE1
OE1
L
N
PC0
N
L
M
OP0
IE0
3
2
1
OC0
OC0
PWM
1
2
3
0
1
2
3
4 5 6
7
8
9
10
OC0
0-10V
1
2
3
0010025508-001
1) The pump can also be connected directly to the building
circuit breaker if continuous current is required.
2) With the heat exchanger, T0 is the flow temperature
sensor.
3) Observe coding switch position.
