SMA PT100U-NR - Manual (Page 10)

Installation and Electrical Connection SMA Solar Technology AG
10 PT100UNR-IEN083510 Installation Guide
4.3 Installing the Sensor
1. Unscrew the four screws on the sensor enclosure and remove the lid.
2. Determine and mark the installation site taking into account the installation space.
3. Fasten the sensor enclosure using the screws provided.
☑ The sensor is now installed.
4.4 Connecting the Sensor
1. Unscrew the screws on the sensor enclosure and
remove the lid.
2. Unscrew the sensor cable gland.
3. Remove the small interior protection plates. Make
sure that the interior seal does not fall out.
4. Screw the cable gland halfway onto the enclosure.
5. Thread the cable through the sensor cable gland.
6. Connect the wires to the screw terminals in a 2 or
4-wire system - see image on the right Use a 4-wire
system to connect the Sunny SensorBox.
7. Write down the color of the wires:
I+__________________________
V+__________________________
V-__________________________
I-__________________________
8. Screw the sensor cable gland tightly into the sensor enclosure (torque: 0.8Nm).
2-wire system 4-wire system
I+ V+ V- I- I+ V+ V- I-