SMA RS485-Quick Module V.3.0 - Manual (Page 2)

MUltI-fUnCtIon RElay ConnECtIon ConnECtIon to thE RS485 bUS
Preparing the cable
1. Use a cable with a cross-section of 6 to 7 mm.
2. Remove 40 mm of cable sheath.
3. Shorten the cable shield to 15 mm and fold it back.
4. Cut off unused insulated conductors at the cable sheath to prevent a short-circuit.
You need 3 insulated conductors, 2 of them have to be twisted (see "Connecting the
RS485 bus cable" step 9).
5. Strip 6 mm off the insulated conductors.
6. Cover the shield with the delivered conductive
adhesive foil.
Preparing the RS485-Quick Module
1. Open the lid of the RS485-Quick Module.
2. Loosen the screw of the strain-relief and remove the
jumper.
3. Remove the filler plugs from the right cable entry (if you
want to connect 2 cables, remove both filler plugs).
4. Remove the cable support sleeve.
Connecting the RS485 bus cable
5. Insert the cable and guide it through the cable entry into
the RS485-Quick Module.
6. Reattach the cable support sleeve.
7. Push the cable into the shielding clamp.
8. If one cable is connected (inverter at the end of the
RS485 bus) leave the resistor connected. If the resistance
is not correctly connected, see RS485 cabling plan
poster.
If 2 cables are connected (inverter in the middle of the
RS485 bus), remove the left resistor of the termination
plug.
9. Connect the insulated conductors to the string-type
terminals and make a note of the color of the insulated
conductors.
Signal RS485-Quick Module Insulated conductor
color
RS485 bus
5 5
Data+ 2 2
Data- 7 7
10. Reattach the jumper and fasten the screw of the strain-
relief.
11. Close the lid and flip the flap down again until it locks
into place.
12. Connect the other end of the cable to the RS485 bus node. See the supplied RS485
cabling plan poster for the connection layout and system wiring.
☑ The RS485-Quick Module is connected to the RS485 bus.
Connection requirements
You have the option of connecting separate loads both in the event of failure and for trouble-free
operation.
The following table contains the maximum permissible voltages and currents:
voltage Current
AC Max. 240 V Max. 1.0 A
DC Max. 30 V Max. 1.0 A
Cable Requirements
• The cable type and cable-laying method must be appropriate to the application and loca-
tion.
• The cable must be double-insulated.
Position Description value
a External diameter 11.7 mm ... 12.5 mm
b Cross-section of insulated conductor 0.5 mm² ... 2.5 mm²
C Length of the insulated conductor max. 15 mm
D Strip insulation max. 8 mm
line circuit breaker
If you connect the multi-function relay to the power distribution grid, the relay must be fused with
an individual line circuit breaker.
Connection plan
Preparing the RS485-Quick Module
1. Open the lid of the RS485-Quick Module.
2. Loosen the screw of strain-relief on the right side and
remove the jumper.
Connecting the cable to the multi-function relay
3. Pierce the seal with a screwdriver or a pointed object
and lead the cable inside.
4. Connect the insulated conductors to the multi-function
relay as shown in the connection plan, depending
on whether you require an operating or an error
message. Reattach the jumper and fasten the screw
of the strain-relief.
5. Close the lid and flip the flap down again until it
locks into place.
☑ The multi-function relay is connected.