3.4.3 Overview Of The Terminal Assignment - Buderus EM100 Installationsanleitung

3.4.3 Overview of the terminal assignment

This overview indicates which system parts can be connected.
120/230VAC 120/230VAC
230 VAC
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 Building Management System with 0-10 V interface
HS Heat Source on BUS system
OE1-74 Mains voltage output, solenoid valve
OE1-75 Fault output (230 V)
PC0 Mains voltage output, pump (230 V)
IE0 Pump alarm output
OP0 Pump on/off (output/potential-free contact ≤ 24 V)
T0 Low loss header temperature sensor input
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)
OC0 1-3 Pump check-back signal input (PWM), optional
CON Control unit with BUS system (Controller)
MC Boiler control device (Master Controller)
MM 100 Heating circuit module (EMS/EMS plus)
EM100 Extension module
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.
EM100 – 6720891034 (2019/04)
EM100
120/230 V AC
OE1 PC0
N L N L N 74 75 N 63
N L N L
M
230 VAC PC0
OE1 OE1
1)
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.
≤ 24 V
IO1 OC0
1 2 3 4 1 2 3
≤ 24 V
IE0 OP0 T0 BUS
1 2 1 2 1 2 1 2
1 2
(+) (–)
IO1
IE0 OP0 T0 BUS
0-10 V 0-10 V
2)
3)
3)
4 5 6 4 5 6
7 3
3
2 2
8
1 9 1
10
0 0
OC0
1 2
3 4
1 2 3 1 2
(+) (–)
0-10V PWM
IO1 OC0
OC0
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