Overview Of The Terminal Assignment - Bosch EMS 2 Notice D'installation

16 | Mounting
3.2.4

Overview of the terminal assignment

This overview indicates which system parts can be connected for all
terminals in the module. The components identified with * (such as HS1
and M1) 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.
120/230VAC 120/230VAC
N L
N L
M
PC0 A0 230 V AC
Key to the Fig. above and to Fig. 23 to 25 (no terminal designation):
230 V AC Mains voltage connection
A0 Remote fault indicator
BUS EMS 2 / EMS plus BUS system (do not connect to
BUS1 ... ...BUS4)
BUS1...4 EMS / EMS plus BUS system or EMS 2 / 2-wire BUS
(connect directly to HS1 ... HS4 or M1 ...M4)
CON User interface with EMS 2 / EMS plus BUS system
(Controller)
GLT Building management system with 0-10 V interfaces
(Building Management System)
HS1, HS5, HS9, HS13
Heat source 1 (HS1 to BUS1), 2 (HS5 to BUS2),
3 (HS9 to BUS3) and 4 (HS13 to BUS4) to single MC 400 /
(Heat Source)
HS1...4 Heat source 1 (to BUS1) ... 4 (to BUS4) to first subordinate
MC 400 (M1) / (Heat Source)
HS5...8 Heat source 1 (to BUS1) ... 4 (to BUS4) to second
subordinate MC 400 (M2) / (Heat Source)
I2 Switch for maximum output (all devices are switched to
maximum output when closed; Input)
6 720 816 739 (2015/05)
MC400
4 5 6
3
2
1
0
120/230 V AC
PC0 A0
N 63 NO C NC
120/230 V AC
PC1 IA1
N L N 63 L IN
N L
M
230 V AC PC1 IA1
If no stop switch (N/C contact) is connected to terminal I3:
▶ Connect the jumper, which is included 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 P0 HS1* HS5* CON
M1* M2*
I3 Stop switch (heat requirement for all devices is interrupted
when open; Input)
IA1 230 V controller (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)
PC0 Cascade pump (On/off or optional speed control via 0-10 V
signal with connection OC1; Cascade Pump); only with heat
sources without a pump
PC1 Heating pump (Pump Circuit); feed pump or heating pump
for one heating circuit without mixer and without MM 100
P0 Input and feedback for output control via a 0-10 V signal
(power input and output); Terminal assignment: 1 – earth;
2 – output; 3 – input (optional)
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, if no stop switch is connected to terminal I3.
1 2 3
0-10V
PC0
T0 I2 I3 HS9* HS13*
M3* M4*
6 720 809 449-16.3O
MC 400