Parameter Description
Compensation oset voltage Species the compensation oset voltage between PV and PE
after the PID module operates stably.
The value ranges from 0–500 V, and the default value is 50 V.
● If the PV module compensation voltage direction is set to PV–
positive oset, the value indicates the positive voltage
between PV– and the ground, and the compensation range is
0–500 V.
● If PV module compensation voltage direction is set to PV+
negative 
oset, the value indicates the negative voltage
between PV+ and ground, and the compensation –500 V to 0
V.
NOTE
● If Compensation 
oset voltage is set to 500 V, the PID module
provides the maximum output to enhance the voltage compensation
eect. The output voltage amplitude of the PID module is automatically
capped to ensure the safety of a PV power plant. The output voltage
amplitude is also related to the maximum system DC-to-ground
withstand voltage and maximum output voltage.
● After this parameter is set and the PID module works properly, use a
multimeter that is set to the DC position to measure the voltage
between the PV input terminal of the SUN2000 and ground. (For PV–
positive 
oset, check whether the voltage between PV– and ground is
greater than or equal to 0 V. For PV+ negative oset, check whether
the voltage between PV+ and ground is equal to or less than 0 V.)
Clear data
Clears the active alarms and historical alarms stored on the PID
module.
You can select Clear data to clear active alarms and historical
alarms for the PID module.
 
6.3.15.2 PID-PVBOX Running Parameters
Parameter
Description
Operation mode Species the current working mode of the PID module.
● Before setting this parameter to Manual, ensure that inverters
in a PV array are powered o and their DC switches are turned
o. This working mode is used during commissioning after
deployment or fault locating. In this case, the PID-PVBOX
delivers the output voltage based on the value of the
commissioned output voltage.
● Set this parameter to Automatic after ensuring that the PID
module works normally.
Output voltage (manual) Species the output voltage when the PID module works in
commissioning mode.
Repair time Set the recovery time for each day.
SmartLogger3000
User Manual 6 WebUI Operations
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