Overview Of The Terminal Assignment - Bosch Thermotechnology MC 400 Notice D'installation

Installation
3.3.4

Overview of the terminal assignment

This overview indicates which system parts can be connected for all
terminals in the module. The components (such as HS1 and M1)
identified with * in the system, are possible alternatives. Depending on
the module's use, one of the components is connected to the "BUS1"
terminal.
More complex systems can be created in combination with additional
cascade modules. Terminal assignments, which deviate from the
terminal overview, are therefore possible.
N L
M
PC0 A0 230 V AC
Fig. 13
Legend to the Fig. above and to Fig. 83 to 88
(no terminal designation):
230 V AC Mains voltage connection
AO 230 V remote fault indicator provided by the customer
BUS EMS 2/EMS plus BUS system (do not connect to BUS1 ...
BUS4)
BUS1...4 EMS 2/EMS plus BUS system or EMS 2 /2-wire BUS
(connect directly to HS1 ... HS4 or M1 ... M4)
CON Control unit with EMS 2/EMS plus BUS system (Controller)
BMS Building management system with 0-10 V interfaces
(Building Management System)
HS1 Heat source 1 (HS1 to BUS1) to single MC 400 /
(Heat Source)
HS5 Heat source 2 (HS5 to BUS2) to single MC 400 /
(Heat Source)
HS9 Heat source 3 (HS9 to BUS3) to single MC 400 /
(Heat Source)
HS13 Heat source 4 (HS13 to BUS4) to single MC 400 /
(Heat Source)
HS1...4 Heat source 1 (to BUS1) ... 4 (to BUS4) to first lower level
MC 400 (M1) / (Heat Source)
HS5...8 Heat source 1 (to BUS1) ... 4 (to BUS4) to second lower level
MC 400 (M2) / (Heat Source)
I2 Switch for maximum performance (all devices are switched
to maximum performance if closed; Input)
20
120/230 V AC
PC0 A0
N 63 NO C NC
120/230 V AC
PC1 IA1
120/230VAC 120/230VAC
N L N L N 63 L IN
N L
M
230 V AC PC1 IA1
If no stop switch (NC contact) is connected to terminal I3:
▶ Connect the jumper, which is included in the scope of delivery,
to terminal I3.
MC 400
4 5 6
3 7
1)
2
8
1 9
10 10
0
≤ 24 V
T0 I2 I3 OC1 BUS3 BUS4
1 2 1 2 1 2 1 2 3 1 2
1)
≤ 24 V
T2 BUS1 BUS2
T1 0-10V
1 2 1 2 1 2 3 1 2 1 2
1 2 3
(-) (+) (+)
T1 T2 PO HS1* HS5*
M1* M2*
I3 Stop switch (heat demand for all devices is interrupted if
open; Input)
IA1 230 V input On/Off controller (code 6...9)
M1...4 lower level cascade module 1 (to BUS1) ... 4 (to BUS4)
MC 400 Cascade module
MM 100 Heating circuit module (EMS 2/EMS plus)
PC0 Cascade pump (On/Off or optional speed control via 0-10 V
signal with OC1 connection; Pump Cascade); only with heat
sources without a pump
PC1 Heating pump (Pump Circuit); only for one heating circuit
without mixer and without MM 100 (feed pump or heating
pump)
PO Input and feedback for performance control via a 0-10 V
signal (Power In-/Output); terminal assignment: 1 – 2 input;
1 – 3 output)
T0 Flow temperature sensor (Temperature sensor)
T1 Outside temperature sensor (Temperature sensor)
T2 Return temperature sensor (only required if PC0 with speed
control via 0-10 V signal is at connection OC1; otherwise
optional; Temperature sensor)
1) Only required, if no stop switch is connected to terminal I3.
1 2
BUS
1 2
1 2 3
0-10V
PC0
CON T0 I2 I3
MC 400 – 6720890243 (2018/12)
HS9* HS13*
M3* M4*
0010013231-002