PV500 series solar pumping inverters Keypad operation procedure-20-4 Keypad operation procedure4.1 Keypad introductionKeypads are used to control PV500 series inverters, read the state data and adjustparameters. If external keypads are needed, select keypad extension wires.Figure 4-1 Keypad diagram for invertersNote: External keypads can be configured for inverters ≤ 2.2kW. The keypads of inverters ≥4kW can be used as external keypads.The keypad displaying state of PV500 series inverters is divided into stopping stateparameter, running state parameter, function code parameter editing state and fault alarmstate and so on.