SMA SC 500CP XT - Manual (Page 44)

4.6.10.8 Changing the Monitoring Period
The monitoring period refers to the time for which the PV power plant is monitored by the Sunny String-Monitors. The
monitoring period is set from 10.00 a.m. to 3.00 p.m. by default.
You can set the monitoring period for all Sunny String-Monitors or allocate a separate monitoring period to each
group of Sunny String-Monitors.
The monitoring period must be within the communication period.
Setting the monitoring period for all Sunny String-Monitors
1. Log into the user interface (see Section 9.4.1, page 81).
2. Select the parameter MoniTmGrAllOn and set the start of the monitoring period.
3. Select the parameter MoniTmGrAllOff and set the end of the monitoring period.
4. Select the button [Save].
Setting the monitoring period for individual Groups of Sunny String-Monitors
1. Log into the user interface (see Section 9.4.1, page 81).
2. Select the desired Sunny String‑Monitor from the device list.
3. Select the tab Parameters.
4. Select the parameter MoniTmGr1On and set the start of the monitoring period.
5. Select the parameter MoniTmGr1Off and set the end of the monitoring period.
6. Confirm the entry with [Save].
7. Repeat steps 2 to 6 for the remaining groups.
4.6.10.9 Assigning Strings to Different Measuring Channels
To simplify monitoring, you can assign the strings to the eight measuring channels.
You can select the number of strings per channel between 1 and 4 for each of the eight measuring channels. The
default setting is 1.
You can use the parameter No.of Strings to assign a string number between 1 and 4 to all measuring channels of the
Sunny String-Monitor. This avoids having to set the number of strings for individual channels, since this number is
automatically adopted for the grouped channels.
Procedure:
1. Select the desired Sunny String‑Monitor from the device list.
2. Select the tab Parameters.
3. Enter the number of strings per measuring channel in the parameter fields No.of Strings 1 to No.of Strings 8, or
the number of strings for all measuring channels in the field No.of Strings.
4. Select the button [Save].
4.6.10.10 Assigning Strings to Different Groups
In the Sunny Central String-Monitor Controller, the string data is continuously monitored and the group data compared
so that potential errors are detected immediately. It is therefore advisable to split the strings into different groups if
some strings are shaded, aligned differently or equipped with different modules.
By default, all strings are assigned to Group 1.
Group 0 is not monitored, which means only strings excluded from monitoring should be assigned to this group.
4 Commissioning SMA Solar Technology AG
User Manual SCCPXT-BA-E4-en-54 44