SMA SI 3.0-11 Installation - Manual (Page 42)

7 Electrical Connection SMA Solar Technology AG
42 SI30M-44M-60H-80H-IA-en-30 Installation Manual
7.4.11 Connecting a Signal Generator for Generators Without Autostart
Function
Generators without an autostart function do not have electric starting devices. If you install a generator without
an autostart function, you can connect a signal generator (e.g. signal lamp) to the multifunction relay of the Sunny Island
inverter. As a result, the Sunny Island can signal when the generator is to be manually started and stopped.
Figure 16: Connecting a signal generator to signal a generator request (example)
Requirements:
☐ The technical requirements of the multifunction relay must be met (see Section 10 "Technical Data", page 94).
Cable requirements:
☐ Copper wire
☐ Conductor cross-section: 0.2 mm² to 2.5 mm²
Procedure:
2. Go to Section 8.1.5, page 66 and enter AutoGn in the table for configuration.
Connecting a signal generator in a cluster
Slaves control the generator less reliably than masters do.
• Connect the generator control preferably to the master.
• In a multicluster system, always connect the signal generator to the master of the main cluster.
1. :$51,1*
Danger to life from electric shock due to incorrect insulation
• Connect the control cable on the Sunny Island to either
multifunction relay Relay1 or Relay2 (see Section 7.5.5
"Connecting Relay 1 and Relay 2", page 55). Use the C and
NO terminals.