SMA SSM-U-1615 - Manual (Page 39)

6.5 Connection of Sensors
6.5.1 Connecting Temperature Sensors
You can connect two temperature sensors, e.g., ambient temperature sensor or module temperature
sensor, in the DC subdistribution. The measured values from the temperature sensors are shown on
the user interface of the inverter. The sensors can be connected using two-, three- or four-conductor
connection technology.
Cable requirements:
☐ Conductor cross-section: 0.08 mm 2 to 1.00 mm 2
☐ External cable diameter: 3.2 mm to 6.5 mm
Additionally required material (not included in the scope of delivery):
☐ 1 ambient temperature sensor or 1 module temperature sensor
☐ 1 connection cable
Requirement:
☐ The sensor must be technically suitable for connection to the temperature inputs of the DC
subdistribution (see Section 13, page 65).
Procedure:
1. Connect the cable to the sensor (see manufacturer manual). Trim the unneeded insulated
conductors up to the cable shield and note down the conductor colors.
2. Lead the other end of the cable through the corresponding enclosure opening (see
Section 6.1, page 25) into the DC subdistribution (see Section 12.1, page 62).
3. Prepare the cable for connection as follows:
• Remove 40 mm of cable sheath at the end of the cable.
• Strip the conductors by 6 mm.
4. Lead the cable through the cable channel as far as terminal X2 or X3 (see Section 4.4, page 17
) of the electronic assembly and out of one of the lateral slits in the cable channel. To do this,
you can remove and reattach the cover of the cable channel.
5. Connect the cable to terminal X2 or X3 (see Section 4.4, page 17) of the electronic assembly
according to the circuit diagram. Observe the pin assignment.
6. Attach the cable to the cable support rail in the DC subdistribution.
6.5.2 Connecting an Irradiation Sensor or Anemometer to the
Analog Input
You can connect one irradiation sensor or one anemometer in the DC subdistribution. The
measured values from the sensors are shown on the user interface of the inverter.
Cable requirements:
☐ Number of insulated conductors: at least two
☐ Shielding: yes
☐ Conductor cross-section: 0.08 mm
2 to 1 mm 2
6 Installation SMA Solar Technology AG
Operating Manual 39 SSMUXX15-BE-en-10