Procedure

1. Enter https://XX.XX.XX.XX in the address box of the browser, and press Enter. The login page is displayed, as shown in Figure 4-1. Specify Language, User Name, and Password, and click Log In to display the main menu.
   Figure 4-1 WebUI login page
   
   
   NOTE:

   • XX.XX.XX.XX is the IP address for the SmartLogger. The default IP address is 192.168.0.10.
   • Because of the permission restriction, log in as Advanced User or Special User.
   • If web pages cannot be opened, specify security settings for the browser. For details, see Preparations for Login in the SmartLogger2000 User Manual.
   • For the SmartLogger software versions that are SmartLogger V200R001C30SPC103 and later, the initial password is Changeme.
   • Use the initial password upon first power-on and change it immediately after login. To ensure account security, change the password periodically and keep the new password in mind. Not changing the initial password may cause password disclosure. A password left unchanged for a long period of time may be stolen or cracked. If a password is lost, devices cannot be accessed. In these cases, the user is liable for any loss caused to the PV plant.

2. On the Maintenance tab page, choose Device Mgmt. > Connect Device. Then click Auto. Search in the lower part of the Connect Device page, as shown in Figure 4-2.
   NOTE:

   • You can also click Add Devices and manually add a PID module.
   • If no device is searched, check that the RS485 communications cable is properly connected and that the baud rate of the PID module is the same as the baud rate of the RS485 port on the SmartLogger.
   • If a double-column transformer is used, the default RS485 address for the PID module is 199. If a dual-split transformer is used, the default RS485 addresses for the PID modules are 199 and 200. You can change the RS485 address over the SmartLogger WebUI or SUN2000 app. For details, see Changing the RS485 Address.
   Figure 4-2 Searching for devices
   

3. On the Monitoring tab page, select the PID module whose running parameters need to be set, and then click Running Param., as shown in Figure 4-3.
   Figure 4-3 Setting running parameters
   
   
   NOTE:

   • The parameter setting page shown in Figure 4-3 is for SmartLogger V200R001C30SPC103. To view the SmartLogger version information, choose Monitoring > About or Maintenance > Product Information.
   • Running parameters cannot be set if the PID module is in the Disconnect state.
   • If a dual-split transformer is used and the SUN2000s connecting to PID modules have the same configurations, you are advised to set the operating parameters of both PID modules to the same.
   Table 4-1 describes the parameters.

   Table 4-1 Running parameter descriptions

   No.	Parameter Name	Function	Value	Description
   1	Offset mode	Specifies the offset mode of the PID module.	Disabled	Select Disabled if the PID module is not required.
   			N/PE	Select N/PE if the PID module is required to use voltage output from the power grid.
   2	PV module compensation voltage direction	Specifies the offset direction of the PID module.	PV– positive offset	PV– positive offset refers to raising the voltage between PV– and ground to above 0 V through voltage compensation. Select PV– positive offset for P-type PV modules or the N-type PV modules that comprise the solar cells whose positive and negative polarities are on different sides. For example, P-type PV modules, HIT, CIS, thin-film PV modules, and CdTe PV modules meet the requirement for PV– positive offset. PV+ negative offset refers to lowering the voltage between PV+ and ground to below 0 V through voltage compensation. Select PV+ negative offset for the N-type PV modules that comprise the solar cells whose positive and negative polarities are on the same side. NOTE: When designing a PV plant, the design institute or user should ask the PV module vendor about the direction of voltage compensation for resisting the PID effect.
   			PV+ negative offset
   3	Working mode	Specifies the working mode of the PID module.	Normal	In normal mode, the PID module operates automatically after the PID module, SUN2000, and SmartLogger communicate with each other properly.
   			Commissioning	In commissioning mode, set Commissioning output voltage. The PID module delivers voltage based on the commissioning output voltage. NOTE: To check whether the PID module functions properly upon first power-on, it is recommended that Working mode be set to Commissioning.
   4	Commissioning output voltage	Specifies the output voltage when the PID module works in commissioning mode.	0–800 V	It is recommended that the commissioning output voltage for the 1000 V/1100 V SUN2000 be set to a value ranging from 50 V to 400 V, and that the commissioning output voltage for the 1500 V SUN2000 be set to a value ranging from 50 V to 600 V. NOTE: After this parameter is set and the output from the PID module becomes stable, use a multimeter that is set to the DC position to measure the three-phase (A, B, and C) voltages of the power grid to the ground, and check whether the voltages are the same as the configured values.
   5	Maximum system DC-to-ground withstand voltage	Specifies the voltages between the PV side and ground and between the AC side and ground in normal mode.	500–1500 V	Specifies the lower thresholds of the maximum voltage ranges between the SUN2000 DC side (including the SUN2000, PV module, cable, SPD, and switch) and ground in a PV power system. The default value is 1000 V. For the 1500 V SUN2000, the recommended value is 1500 V.
   6	Maximum output voltage	Specifies the highest output voltage of the PID module in normal or commissioning mode.	0–800 V	For the 1000 V/1100 V SUN2000, the value ranges from 0 V to 550 V. The parameter value indicates the maximum DC raise voltage between PV and ground. For the 1500 V SUN2000, the value ranges from 0 V to 800 V. The parameter value indicates the maximum DC raise voltage between PV and ground. The default value is 500 V. For the 1500 V SUN2000, the recommended value is 800 V.
   7	AC-to-ground resistance alarm threshold	Specifies the alarm threshold for the impedance between the AC side of the PID module and ground.	0.2–100 kΩ	You can set an alarm threshold for the impedance between the AC grid and ground for the PID module. If the detected impedance is below the threshold, the PID module will generate an alarm.
   8	Compensation offset voltage	Specifies the compensation offset voltage between PV and ground after the PID module operates stably.	0–500 V	The value ranges from 0–500 V, and the default value is 50 V. If PV module compensation voltage direction is set to PV– positive offset, the value indicates the positive voltage between PV- and ground, and the compensation range is 0–500 V. If PV module compensation voltage direction is set to PV+ negative offset, the value indicates the negative voltage between PV+ and ground, and the compensation range is –500 V to 0 V. NOTE: If Compensation offset voltage is set to 500 V, the PID module provides the maximum output to enhance the voltage compensation effect. 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 offset, check whether the voltage between PV– and ground is greater than or equal to 0 V. For PV+ negative offset, check whether the voltage between PV+ and ground is equal to or less than 0 V.)
   9	IMD access	Specifies whether the PID module and insulation monitor device (IMD) can operate in cycle mode.	Enable	Select Enable if you allow the PID module and IMD to operate in cycle mode. Only the IMDs of mainstream suppliers such as DOLD and BENDER are supported, and the IMDs must have enabled dry contacts. NOTICE: Only when IMD access is set to Enable, can you set Periodic PID runtime and Periodic IMD runtime.
   			Disable	Select Disable if you forbid the access of IMDs.
   10	Periodic PID runtime	Specifies the operating time segment of the PID module when the PID module and IMD operate in cycle mode.	60–480 min	The IMD device is shut down when the PID module is operating.
   11	Periodic IMD runtime	Specifies the operating time segment of the IMD when the PID module and IMD operate in cycle mode.	15–480 min	The PID module is standby when the IMD device is operating.

4. Set Working mode to Commissioning and set commissioning output voltage. Use a multimeter that is set to the DC position to measure the three-phase (A, B, and C) voltages of the power grid to the ground, and check whether the voltages are the same as the configured values.

   If they are different, check whether the PID module is correctly grounded.

5. Set Working mode to Normal.
   NOTE:

   • Wait 3 minutes when the PID module connects to the SmartLogger for the first time. When the running state displayed on the SmartLogger page is Running, the PID module is working properly.
   • To verify the voltage between the PV terminal of the SUN2000 and ground after the PID module is used in the networked system, disconnect one PV input terminal of the SUN2000. Then use a multimeter that is set to the DC position to measure the voltage between the disconnected PV input terminal and ground. (For PV– positive offset, check whether the voltage between PV– and ground is greater than or equal to 0 V. For PV+ negative offset, check whether the voltage between PV+ and ground is equal to or less than 0 V.)