Terminal assignment and wiring for an RS485 communication bus
See the RS485 cabling plan poster for the terminal assignment and wiring of an RS485
communication bus.
Requirements for the mounting location
For detailed requirements for the mounting location of the RS485-Power Injector and the
SMA Power Injector with
Bluetooth
, see the installation manual of the Sunny SensorBox on the
enclosed CD.
You can commission the Sunny SensorBox via the RS485-Power Injector
or
via the SMA Power Injector
with
Bluetooth
.
1. Open the Sunny SensorBox.
2. Unscrew the swivel nut at the bottom right of the Sunny SensorBox
and remove the filler-plug.
3. Route the RS485 communication cable through the swivel nut and
the cable gland into the enclosure of the Sunny SensorBox.
4. Prepare the RS485 communication cable:
-
Remove 40 mm of the cable sheath on the side of the
Sunny SensorBox.
-
Strip approx. 6 mm from the wires.
- Twist the cable shield to one string. The cable shield is only
required if another Sunny SensorBox is connected (for
information on connecting additional Sunny SensorBoxes, see
the installation manual of the Sunny SensorBox on the enclosed
CD).
-
Pull the insulating hose (A) over the cable shield. Leave 10 mm
of the cable shield protruding from the insulating hose.
5. Insert the isolated cable shield into the terminal enclosed.
6. Connect the conductors to the terminal "
RS485 F1: IN
" of the
Sunny SensorBox.
7.
Write down the colours of each conductor:
+12 V
GND
D+
D‒
8. If the Sunny SensorBox is connected at the end of the
RS485 communication bus, check, whether the terminator
(120 Ohm) is inserted in the connection "
RS485 F2: OUT
" in the
Sunny SensorBox (see RS485 cabling plan poster).
9.
Ensure that the seal of the cable gland is correctly in place. That prevents moisture entering the
Sunny SensorBox.
10. Tighten the swivel nut onto the cable gland hand-tight to secure the cable (torque: 0.8 Nm).
11. Close the Sunny SensorBox.
12. Route the RS485 communication cable from the Sunny SensorBox to the mounting location of the
RS485-Power Injector or SMA Power Injector with
Bluetooth
.
Orientation of the Sunny SensorBox:
□
The Sunny SensorBox must not be installed vertically with the SMA
logo at the top. Otherwise, water can enter through the round
ventilation membrane on the right side, and damage the device.
1. Attach the mounting plate onto the module rail with suitable screws
and sliding blocks provided by the manufacturer of the
PV mounting system.
2. Open the lateral flaps of the Sunny SensorBox and attach the
Sunny SensorBox to the mounting plate with 4 M4 hexagon socket
screws.
COMMISSIOnInG VIA SMA POwER InjECTOR wITh
Bluetooth
Requirements for the mounting location:
□ The mounting location must be close to a 100 V ... 240 V socket. Incorporate the cable length of the
power supply unit when doing so.
□
The connection quality at the mounting location must at least be "
Good
" (see the installation manual of
the Sunny SensorBox on the enclosed CD on determining the mounting location).
□ The distance to devices operating on the 2.4 GHz radio spectrum (e.g. microwave ovens) and WLAN
devices must be at least 1 m. This prevents diminished connection quality and data transmission speed.
Mounting the SMA Power Injector with
Bluetooth
•
Mount the SMA Power Injector with
Bluetooth
to the wall or on the top-hat rail (see the installation
manual of the Sunny SensorBox on the enclosed CD).
Connecting the RS485 Communication Cable to SMA Power Injector with
Bluetooth
1. Prepare the RS485 communication cable:
- On the side of the SMA Power Injector with
Bluetooth
, strip 40 mm of the cable sheath.
- Strip 4 conductors approx. 6 mm. Observe the conductor colours noted in section
D
"Connecting the
RS485 Communication Cable".
- Shorten conductors which are not required and the cable shield to the cable sheath.
2. Connect the conductors to the plug. Observe the conductor colours noted in section
D
"Connecting the
RS485 Communication Cable".
3. Insert the plug in the jack "
DEVICE
" of the SMA Power Injector with
Bluetooth
.
Connecting the SMA Power Injector with
Bluetooth
to the Voltage Supply
Requirements:
□
The NetID of your PV plant must be set on the SMA Power Injector with
Bluetooth
, (see the installation
manual of the Sunny SensorBox on the enclosed CD on determining the mounting location).
□
On the SMA Power Injector with
Bluetooth
, "
MODE 0
" must be set (see the installation manual of the
Sunny SensorBox on the enclosed CD on determining the mounting location).
□
All inverters and communication products in your plant must be cabled and must have been
commissioned.
1. Connect the DC plug of the plug-in power supply to the DC connection of the SMA Power Injector with
Bluetooth
.
2. Attach the required country adapter to the plug-in power supply and insert the plug-in power supply in a
socket-outlet.
☑
The SMA Power Injector with
Bluetooth
is connected to the voltage supply. The "
RDY
" LED lights green
continuously. When the voltage supply is connected, the Sunny SensorBox starts and is ready for
operation after approx. 1 to 2 minutes. The blue
Bluetooth
LED of the SMA Power Injector with
Bluetooth
lights continuously. On initial commissioning, it can take 3 to 4 minutes until the Sunny SensorBox is ready
for operation.
COMMISSIOnInG VIA ThE RS485-POwER InjECTOR
Requirements for the mounting location:
□ The mounting location must be close to a 100 V ... 240 V socket. Incorporate the cable length of the
power supply unit when doing so.
□ The maximum cable length of the RS485 communication bus may not exceed 1 200 metres.
Mounting the RS485-Power Injector
•
Mount the RS485-Power Injector to the wall (see the installation manual of the Sunny SensorBox on the
enclosed CD).
Connecting the RS485 Communication Cable to the RS485-Power Injector
1. Prepare the RS485 communication cable:
-
Remove 40 mm of the cable sheath at the RS485-Power Injector side.
-
Shorten the cable shield to 15 mm.
- Pull back the cable shield and cover with conductive adhesive foil.
- Shorten unused conductors flush with the cable sheath. Observe the conductor colours noted in
section
D
"Connecting the RS485 Communication Cable".
- Strip approx. 6 mm of insulation from the other conductors.
2. Connect the conductors to the plug. Observe the conductor colours noted in section
D
"Connecting the
RS485 Communication Cable".
3. Insert the plug in the "
RS485+Power OUT
" jack of the RS485-Power Injector.
4. Repeat the steps with other RS485 communication cables and insert the plugs in the "
RS485 IN
" jack of
the RS485-Power Injector.
5. Write down the colours of each conductor:
2 | D+
5 | GND
7 | D‒
6. Attach the shield connection terminal to the RS485 communication cables via conductive adhesive foil.
7.
Connect the free end of the RS485-communication cable to the RS485-bus node (see installation manual
of the RS485 bus node). Observe the noted conductor colours.
8. Connect the RS485-Power Injector to the voltage supply. Connect the DC plug-in power supply unit to the
RS485-Power Injector and plug it into a socket-outlet.
☑
The Sunny SensorBox starts up once it is connected to the voltage supply and is ready for use after about
1 minute. The "
Power
" LED on the RS485-Power Injector lights up.
MOUnTInG ThE SUnnY SEnSORBOX
C
2
D
COnnECTInG ThE RS485 COMMUnICATIOn CABLE
COMMISSIOnInG ThE SUnnY SEnSORBOX
E
