6.2.1 Data cable connection way
The connection between each module is through the external data line. Please confirm thesequence of the two external data line ports before connecting each module. Each confluenceacquisition module has two outside connection ports(Figure 4): Port I and Port II, in which Port I is usedto connect upstream module and Port II is used to connect follow-up modules. Please pay attention to itthat the propulsion part of the data line connector must be fixed with the groove on the port.
The connection sequence order of PV confluence acquisition modules must follow: confluenceacquisition module 1's portⅡ-->confluence acquisition module 2's port ,Ⅰconfluence acquisition module 2's portⅡ-->confluence acquisition module 3's port .When connecting the confluence acquisition modules ,multiple confluence modules should be in sequence order, it is not allowed to insert any other function module between two sequenced confluence modules. Wrong connection will lead to abnormal operation of the device.
LCD display module can be connected with Port II of confluence acquisition module, The LCDdisplay module is not necessary to be connected in at ordinary time except when testing and checking.
The address allocation of PV confluence acquisition module is automatically distributed by thepower module(main module), The first confluence acquisition module connected to the power modulewill be distributed automatically with 1st to 8th channels, and the next confluence acquisition moduleconnected to port II will be distributed automatically with 9th to 16th channels, the final confluenceacquisition module is distributed automatically with 17th to 24th channel.
6.2.2 Installation schematic
Note: The arrow shows current direction. Wrong connection will lead to abnormal operation of the device.
6.3 Definition of input port
After the address of confluence acquisition module is distributed by the main module,the inputchannel address of first module is from 1st to 8th channel,the input channel address of secondconfluence acquisition module is from 9th to 16th channel,the input channel address of final confluenceacquisition module is from 17th to 24th channel. The input channel definition of 1st to 8th channel of asingle module is shown as Figure 3.
7 Wiring mode
Note: Power supply circuit and voltage measuring circuit must be installed with fuse with 3A rated currentand rated voltage that is the highest working voltage in these circuits to ensure safety.