22
MU 100 – 6721804146 (2019/10)
Caption to the figure above and connection diagrams with
system schematics at end of document:
Protective conductor
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)
IE0
Pump alarm output
(default setting: N/O contact)
OP0
Pump on/off (output/potential-free contact
≤ 24 V), coding position 3‒5: potential-free
fault output
T0
Low loss header temperature sensor input
1)
IO1-1(+),2(-) Feedback output for heat source power
(0-10 V)
IO1-3(+),4(-) Input for heat source activation
(setpoint value 0–10 V)
OC0 1-2
Output for pump control signal
(setpoint value 0-10 V/PWM)
2)
OC0 1-3
Pump feedback input (pulse width modulation),
optional
CON
Control unit with BUS system (
Con
troller)
MC
Boiler control device (
M
aster
C
ontroller)
MM 100
Heating circuit module (EMS/EMS 2/EMS plus)
MU 100
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
MU 100
230 V AC
BUS
230 V AC
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
0010028622-001
1) The heat exchanger sensor is T0 with the heat exchanger.
2) Observe coding switch position.
