6 Connection SMA Solar Technology AG
52 ClusterController-IA-en-10 Installation Manual
3. Insert the eight-pole plug at terminal X8 into pin row B.
4. On the connection cable, mark the terminal and pin row to which the connection cable is
assigned. For this purpose, use the cable ties with the caption field.
5. On the supplementary sheet for noting the connected devices, note the terminal to which the
analogue signal source is assigned.
6.11.4 Setpoint via Modbus Client
Requirements:
☐ The Cluster Controller and the Modbus client must be located on the same local area network
(LAN) (see Section 6.8).
☐ The commissioning of the Cluster Controller must be completed.
In order to receive the network operator setpoints via a Modbus client, you must perform the Modbus
configuration via the user interface of the Cluster Controller after completing the commissioning
(see the Cluster Controller user manual).
6.11.5 Connecting the Remote Terminal for Feedback of Network
Operator Setpoints
If the Cluster Controller sends the network operator setpoints for grid management to the inverters in
the plant, you have the option of providing related feedback to the network operator. For this purpose,
the Cluster Controller prepares one digital output and two analogue current outputs as response
contacts to which you can connect corresponding remote terminals, e.g. a remote terminal unit.
Connecting the Remote Terminal to the Digital Output
Via the terminal block Digital output 3 (DO3), you can provide feedback on whether the
Cluster Controller has sent a network operator setpoint for the active power limitation to the inverters
in the plant.
Requirement:
☐ The connection cable must have been prepared for connection to the multipole plug
(see Section 6.5).
Observe the maximum load capacity of the relay contacts
The relay contacts may be loaded with a maximum switching capacity of 30 watts and a
maximum voltage of 48 V DC (see Section9 "Technical Data", page77).
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