Connecting Temperature Sensor To X8; Connection To The Rs485 X9 Input; Rs485 Input X9 - SMA DATA MANAGER M Operating Manual

6 Connection
Figure 13: Connection of a temperature sensor with 4-conductor measurement
6.8.4

Connecting temperature sensor to X8

Requirements:
☐ The temperature sensor must be technically suitable for connection to the analog temperature
inputs (see Section 12, page 77).
☐ The connection cable is prepared for connection to the multipole connector (see Section 6.3,
page 30).
Procedure:
1. Connect the connection cable to the temperature sensor (see the manual from manufacturer).
2. Remove the sheath from the connection cable.
3. Fold the surplus cable shield back over the cable sheath.
4. Strip the insulation off the wires.
5. Connect the connection cable to the supplied 4-pole connector. Ensure that the conductors are
plugged completely into the terminal points up to their insulation.
6. Plug the 4-pole connector into the socket X8 on the product. Observe the pin assignment.
7. Ensure that the connector is securely in place.
8. Ensure that all conductors are correctly connected.
9. Ensure that the conductors sit securely in the terminal points.
10. Fit the cable shield onto an external shielding clamp.
6.9

Connection to the RS485 X9 input

6.9.1

RS485 input X9

You can connect RS485 devices for the communication with Modbus RTU to the two RS485 inputs
X9. The bits in the product are set as follows and may need to be adjusted in the RS485 devices:
Set-up:
38 EDMM-20-BE-en-10
8 data bits
1 stop bit
no parity
SMA Solar Technology AG
Operating manual