Cleaning And Care; Installation; Electrical Connections; Connecting The Bus Connections - Bosch Gateway MB LAN 2 Installationsanleitung

Specifications
Rated voltages:
• BUS-System EMS 2 •
• BUS system(HT) •
• CAN BUS system •
• Module power supply •
Interfaces •
•
•
•
Power consumption 1.5 VA
Permissible ambient temperature 0 ... 50 °C
Protection class IP20
Table 2
2.3

Cleaning and care

▶ If required, wipe the enclosure with a damp cloth. Never use chemically
aggressive or acidic cleaning agents.
3

Installation

3.1 Installation
▶ Remove cover ( Fig. 3, page 88).
▶ Mount the module ( Fig. 4, page 88).
▶ Secure the module ( Fig. 5, page 88).
3.2

Electrical connections

Connections and interfaces
Key to Fig. 6 and 7, page 89:
7,5 V DC Power supply unit connection
CAN 1 Ground (GND)
CAN 2 CAN Low
CAN 3 CAN High
HT/MX EMS 2-/2-wire BUS system connection
LAN LAN connection (RJ45)
RESET RESET button
TSW Switch for CAN connection
Pre-assembling the grommets and connecting the cable
▶ Open the grommets to match the cable diameter and cut in on one side
( Fig. 8, page 89).
▶ Fit the grommets and connect the cables (2-wire BUS/EMS 2:  Fig. 9,
page 89; CAN:  Fig. 10, page 89).
3.3

Connecting the BUS connections

If the maximum total length of the BUS connections between all
subscribers in a BUS system is exceeded, the system cannot be
commissioned.
If a ring structure is present in the 2-wire BUS system, the system
cannot be commissioned.
Maximum total length of the BUS connection between all subscribers of the
corresponding BUS system:
• 2-wire BUS/EMS 2:
2
– 80 m at max. 0.40 mm conductor cross-section
2
– 100 m at max. 0.50 mm conductor cross-section
2
– 150 m at max. 0.75 mm conductor cross-section
2
– 200 m at max. 1.00 mm conductor cross-section
2
– 300 m at max. 1.50 mm conductor cross-section
MB LAN 2
10 V to 24 V DC (reverse polarity
protected)
12 V to 15 V DC (reverse polarity
protected)
0V to 5V
Plug-in power supply unit supplied
230 V AC/7.5 V DC, 700 mA
2-wire BUS (HT)
EMS 2
CAN
LAN: 10/100 MBit/s (RJ45)
• CAN:
– 30 m (shielded, twisted wires)
Suitable cables for the corresponding BUS system:
• 2-wire BUS/EMS 2: e.g. LiYCY 2 x 0.75 (TP)
2
• CAN: 2 × 2 × 0.3 mm ; shielded, twisted wires
▶ All low voltage leads must be routed separately from cables carrying mains
voltage to avoid inductive interference (minimum separation 100 mm).
Connecting the EMS 2-/2-wire BUS system to the module
▶ Connect BUS subscribers with two BUS connectors in series ( Fig. 6,
page 89) or BUS subscriber [B] with one junction box [A] in a star configuration
( Fig. 11, page 89).
▶ In case of external inductive interference, shield the cables.
This ensures that the cables are shielded from external interference (e.g. heavy
current cables, overhead wires, transformer stations, radio and television set,
amateur radio stations, microwave ovens etc).
Connecting the CAN BUS system to the module
Verify the correct position of the two CAN connection switches to
ensure that the CAN system is correctly connected ( Fig. 7,
page 89).
▶ If the module is an end point, both switches must be set to ON.
▶ If the module is connected to a branch line, both switches
must be set to OFF.
▶ Connect the shielding of the CAN cable in the module to CAN 1 (earth).
▶ Connect one wire of the twisted wire pair in the module to CAN 2 (CAN Low).
▶ Connect the second wire (of the twisted wire pair used for CAN 2) inside the
module to CAN 3 (CAN High) ( Fig. 7, page 89).
Make CAN connection to heat pump.
▶ Find free CAN connections in the heat pump.
▶ If no free connection is available in the heat pump, the CAN cable must be
connected sharing the connection with another accessory.
NOTICE: Make sure not to confuse 12V and CAN connection!
If 12 V is connected to the CAN, the processors will be destroyed.
▶ Verify that the three wires are correctly connected to the
terminals correspondingly identified on the PCB.
▶ Connect the shielding (earthing) of the cable to the earth connection of the heat
pump.
▶ Connect the wire connected to CAN 2 (CAN Low) in the module to CANL (CAN
Low) in the heat pump.
▶ Connect the wire connected to CAN 3 (CAN High) in the module to CANH
(CAN High) in the heat pump ( Fig. 12, page 90).
▶ Make sure that the CAN system is connected correctly.
▶ Observe the further information provided in the heat pump instructions.
Key to Fig. 12, page 90:
[1] CAN BUS system at the heat pump
[2] CAN BUS system at the module
GND Do not connect ground
CANL CAN Low
CANH CAN High
+12V Do not make the 12V connection
Completing the installation
▶ Fit the cover.
4

Commissioning

During commissioning, the LED on the module lights up
continuously in red if neither the BUS nor the LAN connection is
made.
The router must be configured as follows:
• DHCP enabled
• Ports 5222 and 5223 not blocked
• Free IP address available
• Address filtering (MAC filter) matched to the module.
Installation | 19
6 720 805 490 (2016/08)