SMA SI 3.0-11 Installation - Manual (Page 47)

SMA Solar Technology AG 7 Electrical Connection
Installation Manual SI30M-44M-60H-80H-IA-en-30 47
Controlling one battery room fan for all batteries
1. Ensure that the battery room is sufficiently ventilated in the case of a malfunction of the multifunction relay.
3. Go to Section 8.1.5, page 66 and enter MccBatFan in the table for configuration.
7.4.16 Connecting the Electrolyte Pump for the Battery
The Sunny Island controls the electrolyte pump for the battery as follows:
• The Sunny Island switches on the electrolyte pump at least once a day.
• The Sunny Island switches on the electrolyte pump a maximum of nine times each day.
• When the battery has been charged to 10% of its rated capacity, the Sunny Island switches the electrolyte pump on
for five minutes.
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. For a multicluster system, repeat step 1 for every cluster.
3. Go to Section 8.1.5, page 66 and enter AcdCir in the table for configuration.
2. :$51,1*
Danger to life from electric shock due to incorrect insulation
• Connect the battery room fan to one multifunction relay on a
Sunny Island of the main cluster (see Section 7.5.5
"Connecting Relay 1 and Relay 2", page 55).
1. :$51,1*
Danger to life from electric shock due to incorrect insulation
1. On the Sunny Island, connect the control cable of the acid
circulation to a multifunction relay (see Section 7.5.5
"Connecting Relay 1 and Relay 2", page 55).