Overview Of The Terminal Assignment - Bosch MC 400 Installationsanleitung

16 | Mounting
3.2.4

Overview of the terminal assignment

For all of the terminals of the module, this overview indicates which
system parts can be connected. The components identified with * (such
as HS1 and M1) of 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 deviating from the terminal
overview are possible.
120/230VAC 120/230VAC
N L
N L
M
PC0 A0 230 V AC
Legend to the figure above and Fig. 23 to 25 (without terminal designation).:
230 V AC Mains voltage connection
A0 Remote fault indicator
A1 External fault switch
BUS Connect to EMS 2 / EMS plus BUS system
(not to BUS1 ... BUS4)
BUS1 – 4 Connect to EMS / EMS plus BUS system or EMS 2 / 2 wire
BUS (directly to HS1 – HS4 or M1 – M4).
CON User interface with BUS system EMS 2 / EMS plus
(Controller)
GLT Building management system with 0-10V interfaces
HS1 – 4 Heat source 1 (to BUS1) – 4 (to BUS4) to single MC 400 or
first subordinate MC 400 (M1) / (Heat Source)
HS5 – 8 Heat source 1 (to BUS1) – 4 (to BUS4) second subordinate
MC 400 (M2) (Heat Source)
I2 Switch for maximum performance (all devices are switched
to maximum performance when closed; Input)
I3 Stop switch (heat requirement for all devices is interrupted
when open; Input)
M1 – 4 Subordinate cascade module 1 (to BUS1) – 4 (to BUS4).
MC 400 Cascade module
MM 100 Heating circuit module (EMS 2 / EMS plus)
6 720 809 453 (2014/12)
MC400
4 5 6
3
2
1
0
120/230 V AC
PC0 A0
N 63 NO C NC
120/230 V AC
PC1 A1
N L N 63 L IN
N L
M
230 V AC PC1 A1
When a stop switch (opener) is not connected to
terminal I3:
▶ Connect the jumper in the scope of delivery to
terminal I3.
7
1)
8
9
10 10
≤ 24V
BUS3 BUS4
T0 I2 I3 OC1
1 2 1 2 1 2 1 2 3 1 2 1 2
1)
≤ 24V
T1 T2 0-10V BUS1 BUS2 BUS
1 2 1 2 1 2 3 1 2 1 2 1 2
1 2 3
0-10V
T1 T2 PO HS1* HS2* CON
M1* M2*
PC0 Cascade pump (on/off or optional speed control via pulse
width modulation or 0-10 V signal also at connection OC1;
Pump Cascade); only for heat sources without an integral
pump
PC1 Heating pump (Pump Circuit); only with heating circuits
without a pump
PO Performance feedback (0-10 V signal; Power Output)
T0 Flow temperature sensor (Temperature sensor)
T1 Outside temperature sensor (Temperature sensor)
T2 Return temperature sensor (only required when PC0 with
speed control via 0-10 V signal is at connection OC1;
otherwise optional Temperature sensor)
1) Only required when a stop switch (opener) is not connected
to terminal I3.
1 2 3
PWM
0-10V
PC0
T0 I2 I3 HS3* HS4*
M3* M4*
6 720 809 449-16.2O
MC 400