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SMA Solar Technology AG 6 Connection

Installation Manual ClusterController-IA-en-10 37

6.10 Connecting Sensors to the Cluster Controller

6.10.1 Connecting the Irradiation Sensor

You can connect one irradiation sensor or pyranometer to the Cluster Controller. The measured value

of the irradiation sensor or the pyranometer is shown on the display and the user interface of the

Cluster Controller and transmitted to Sunny Portal. In Sunny Portal, the measured values are taken into

account in the calculation of the performance ratio.

Additional required accessories (not included in scope of delivery):

☐ 1 irradiation sensor

☐ 1 connection cable (for cable requirements, see Section 6.3).

Requirements:

☐ The sensor 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12: Pin assignment at the terminal block Analogue current input 1 (AI1)

1. Connect the connection cable to the irradiation sensor (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

A1 Not assigned Reserved for future applications

A2 I+ Current input

A3 I − Current feedback

A4 GND Shield ground

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