SMA
Technologie AG
Electrical Connection
Installation manual
SC-100-13:SE2407
Page 29
7.1.3 Handling the Connection Terminals
The following figure shows the correct method for handling the terminals used for
connecting external cables to the control terminal strip. The connection terminals are
designed as maintenance-free spring-loaded terminals that can be operated using a
suitable screwdriver.
Figure 7.4:
Handling the connection terminals (source: Wago)
7.1.4 Sensors and Digital Outputs
Two analog sensors and one PT100 temperature sensor can be connected to the Sunny
Central. The connection is made in the device's connection area. Please refer to the
provided wiring diagram for the signal assignment of the connection terminals.
Further information about the connection and parameterization of analog sensors is
contained in the Sunny Central user manual. We recommend equipping the first sensor
inputs with an overvoltage protector, available as an option. The sensors are connected
directly to the overvoltage protector, see
figure 7.3.
The connections should only be made under voltage-free conditions!
Please note the connection possibility of the analog sensors in four-wire or two-wire
system and the required transducers, if necessary.
Please take note of the comprehensive description in the Sunny Central user
manual provided.
