SMA METER CONNECTION BOX - Manual (Page 17)

SMA Solar Technology AG Electrical Connection
Installation Guide METERBOX-IEN110611 17
6.4 Terminating the Meter Connection Box
You only have to terminate the Meter Connection Box if
it is located on one of two ends of the RS485
communication bus.
1. Insert the resistor provided in the pins 2 and 7 of the
4-pole plug.
2. Insert the plug in the unused terminal of the Meter
Connection Box for the RS485 communications bus.
☑ The Meter Connection Box is terminated.
6.5 Connecting the Meter Connection Box to an Energy Meter
1. Remove 4 cm of cable sleeve.
2. Shorten the insulated conductors not required.
3. Strip approx. 6 mm off the insulated conductors.
4. Connect the insulated conductors to the 2-pole plug.
5. Write down the color of the insulated conductors.
6. Insert the plug in the Meter Connection Box's "S0"
terminal.
7. Connect the other end of the cable to the energy
meter.
☑ The Meter Connection Box is connected to the
energy meter.
Maximum Cable Length: 3 m
The maximum cable length of 3 m may not be exceeded.
Cabling Recommendations
You can also use the RS485 communication cable to connect the Meter Connection Box
to the energy meter.
Meter Connection Box
S0 terminal Insulated conductor color Energy meter's pulse output
+ + (e.g. +ve)
− − (e.g. − ve)