===== Introduction to port of PCS =====
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^No. ^Description^
|1 |DC + to connect battery’s positive pole. It is recommended to use M8*12 screws |
|2 |DC - to connect battery’s negative pole. It is recommended to use M8*12 screws |
|3 |DC protection shell fixing point |
|4 |RS-485, R-in+, R-in-, R-out+, R-out- |
|5 |Ethernet port |
|6 |AC protection shell fixing point |
|7 |AC terminal block, M6 crimp terminal are recommended |
|8 |Ground protection block, M4 crimping terminals are recommended |
PWS2-30K-EX has two different communication interfaces: Ethernet and RS-485, meanwhile, there is EPO connection and DMR0 port.
===== Ethernet cable connection =====
PWS2-30M-EX can be directly networked through Ethernet and connected to PC for communication. Through networking, users can remote dispatch energy, monitor operation state, and set parameters with background software in PC.
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Step 1: Penetrate network cable whose insulating layer is stripped into the waterproof bushingcap and inserted it into RJ45 connector after being arranged in order;\\
Step 2: Use wire crimpers to compress the connector; \\
Step 3: Insert the finished cable into the "Ethernet" port of the inverter panel. \\
Step 4: Insert the ready-made cable into Ethernet terminal. \\
Step 5: Lock the waterproof cap.
===== RS 485 cable connection =====
PWS2-30M-EX can be connected to BMS/EMS through RS-485 to obtain battery information and energy dispatching command and complete automatic charging and discharging control and protection of energy storage system. The port is a 3.81MM pitch pluggable terminal block with a spacing of 3.81 8P.\\
Insert the communication cable into the terminal block, lock the terminal, and access the communication port according to the sequence of the operation panel.
**WARNING**\\ Only qualified professional can conduct wiring work.
===== EPO connection =====
The R-in+ interface and R-in-interface can be used as the EPO interface, which is a 3.81MM pitch pluggable terminal block.
The EPO function can be enabled or disabled by setting the contents of the 0x0148 address register to 1 or 0. When the EPO function is enabled, you needs to short the R-in+ interface to the R-in-interface to maintain the normal operation of the PWS2-30M-EX. If the R-in+ interface is disconnected from the R-in-interface, the device will trigger an EPO alarm to shut down.
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**WARNING**\\ Only qualified professional can use R-in+ and R-in-interface.
===== DRM0 port =====
According to the Australian certification requirements for the Inverter demand response modes (abbreviated as DRM) function, the grid-connected equipment incorporated into the Australian grid must be equipped with a DRM device. Therefore, the PWS2-30M-EX device shipped to Australia must have a built-in DRM device, while shipments to other countries, optional DRM device. At present, the DRM device built into the PWS2-30M-EX can only implement the DRM0 function as shown in the following figure.
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When the PWS2-30M-EX has a built-in DRM device, the customer can enable or disable the DRM0 function by setting the contents of the 0x0148 address register to 2 or 0.
If the DRM0 function is enabled, a resistor with a resistance of 15kΩ and power greater than 0.1W must be connected between the R-in+ interface and the R-in-interface. If the resistor is short-circuited or open circuited, the PWS2-30M-EX device will report a fault within 2 seconds and shut down.
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**WARNING**\\ Since both the EPO function and the DRM0 function need to use the R-in+ and R-in-interface, only one of the two functions can be selected.
**WARNING**\\ Only qualified professional can use R-in+ and R-in-interface.