Bosch MB LAN 2, Installation Instructions Manual

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Installation
MB LAN 2 – 6 720 805 490 (2018/12)
23
2.1 Standard delivery
Fig. 1, page 102:
[1] Module
[2] Plug-in power supply unit with connecting cable
[3] CAT 5 LAN cable
[4] Bag with installation parts
[5] Installation instructions
2.2 Specification
The design and operation of this product conforms to the European
Directives and the supplementary national requirements. Its
conformity is demonstrated by the CE designation.
The declaration of conformity for the product can be read on the Internet (

back
page).
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 Overview of the commissioning steps
1. Install all components.
2. Establish a BUS connection (orange or white plug with designation BUS or EMS).
3. Establish an IP-connection.
4. Switch on the heat source.
5. Wait approx. 2 minutes for a system configuration.
6. Plug in the power source to switch on the Gateway.
7. Wait approx. 15 minutes for a Gateway update.
8. Commission the required application (e.g. app).
3.2 Installation
▶ Remove cover (

Fig. 3, page 102).
▶ Mount the module (

Fig. 4, page 102).
▶ Secure the module (

Fig. 5, page 102).
3.3 Electrical connections
Connections and interfaces
Key to Fig. 6 and 7, page 103:
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 103).
▶ Fit the grommets and connect the cables (2-wire BUS/EMS 2:

Fig. 9,
page 103; CAN:

Fig. 10, page 103).
3.4 Connecting the BUS connections
Maximum total length of the BUS connection between all subscribers of the
corresponding BUS system:
•
2-wire BUS/EMS 2 :
– 80 m at max. 0.40 mm
2
conductor cross-section
– 100 m at max. 0.50 mm
2
conductor cross-section
– 150 m at max. 0.75 mm
2
conductor cross-section
– 200 m at max. 1.00 mm
2
conductor cross-section
– 300 m at max. 1.50 mm
2
conductor cross-section
• 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)
• CAN : 2 × 2 × 0.3 mm
2
; 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 103) or BUS subscriber [B] with one junction box [A] in a star
configuration (

Fig. 11, page 103).
▶ 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
▶ 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 103).
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.
Specifications
Dimensions (W × H × D) 151 × 184 × 61 mm (further dimensions

Fig. 2, page 102)
Rated voltages:
•
BUS-System EMS 2
• BUS system(HT)
• CAN BUS system
• Module power supply
• 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
Interfaces • 2-wire BUS (HT)
• EMS 2
• CAN
• LAN: 10/100 MBit/s (RJ45)
Power consumption 1.5 VA
Permissible ambient temperature 0 ... 50 °C
Protection class IP20
Table 2
You can find the information about a BUS connection of an
appliance checking the barcode.
If a shielded LAN cable is used, this may lead in some rare cases to
problems with the BUS system. In such cases, use an unshielded
LAN cable as an alternative.
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.
Verify the correct position of the two CAN connection switches to
ensure that the CAN system is correctly connected (

Fig. 7,
page 103).
▶ 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.