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4.6.1 Replacing the Lithium Battery
The connection area of the devices contains a 3 V, type CR2450 lithium battery. This
battery is used to maintain the values stored on the data logger and for the total yield
and hours of operation. The battery is designed for a life of approximately 10 years.
However, replacement of the battery after approximately 5 years is recommended.
Be sure to have this work only performed by specialized personnel.
To replace the battery, proceed as shown below.
• Turn off device on power switch.
• Turn off DC circuit breaker in the generator connection box.
• Disconnect the power fuses of the incoming power line of the device, wait 5
minutes and take precautions to prevent accidental reconnection.
• Remove the terminal cover and then slightly lift the contact holder before carefully
removing the battery. Then immediately install the new battery with the minus
pole pointing towards the device.
• Screw down the terminal cover again.
• For device commissioning, see chapter 4.4
To avoid losing the values stored on the data logger, replacement of the lithium
battery may not take longer than 60 seconds.
5 Reactions of the Inverter
5.1 Switch-On Procedure
This is the first operational indication of the device after correct application of the
power and the solar voltage and the power switch has been turned on.
During a period of approx. 30 seconds the data logger is initialized and a self-test
and a power test are performed. This may last up to 20 minutes if the inverter has
been in storage for a long period.
The solar generator is checked for sufficient power output to prevent unnecessary
loss due to being turned on too early in the morning. The exact point in time depends
on the particular solar generator and the time of year and the local conditions. The
MASTER is able to measure the solar generator during operation and adjust its on
and off conditions accordingly.
After this procedure is executed successfully, the MASTER and any SLAVES
connect to the power.
Siemens AG
C98130-A7580-A1-1-7619
SITOP solar
08/2006
Switch on procedure
Page 18 of 34
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