SMA CLUSTER CONTROLLER Installation Manual

SMA Solar Technology AG 6 Connection
Installation Manual ClusterController-IA-en-10 51
6.11.3.2 Connecting the Signal Source to the Analogue Input for the
Reactive Power Setpoint
The analogue signals for the reactive power setpoint are sent to the terminal block Analogue current
input 3 (AI3) at terminal X8 of the Cluster Controller. A remote terminal unit can be used as an
analogue signal source, for example.
Additional required accessories (not included in scope of delivery):
☐ 1 analogue signal source
☐ Connection cable (for cable requirements, see Section 6.3)
Requirement:
☐ The analogue signal source must be able to output a current signal in the range from
0 mA to 20 mA.
☐ The connection cable must have been prepared for connection to the multipole plug
(see Section 6.5).
Figure20: Pin assignment at the terminal block Analogue current input 3 (AI3)
1. Connect the connection cable to the analogue signal source (see the manufacturer manual). For
this purpose, trim the unused insulated wires up to the cable shield and note the wire colours
2. Connect the connection cable to the eight-pole plug as follows:
• Release conductor entry 4 using a screwdriver and insert the insulated wire of the single core
into the conductor entry.
• Release conductor entries 2 and 3 using a screwdriver and insert the insulated wires of the
connection cable into the conductor entries. Observe the pin assignment.
Pin Signal Explanation
B1 Not
assigned
Reserved for future applications
B2 I+ Current input
B3 I − Current feedback
B4 GND Shield ground

SMA CLUSTER CONTROLLER Specifications

General

Data Logging	Yes
Display	LCD
Power Supply	24 V DC
Remote Monitoring	Yes
Protection Class	IP20
Communication Interfaces	Ethernet
Product Type	Controller
Manufacturer	SMA