Inverter repair fault case MM420 / MM440 inverter AOP panel inverter can only store a set of parameters described in the manual selection panel AOP can store 10 sets of parameters 6RA22 repair, but for the second inverter parameters AOP panel When the backup maintenance Siemens 200cn PLC, which was "not enough storage capacity." Solution is as follows: a) Select the "language" item in the menu; b) Choose a language not used in the "language" item; c) press Fn + Δ key to select Delete, press P to confirm after the prompt; so , AOP panel can store up to 10 sets of parameters. The reason for this phenomenon may be the design of the AOP panel is not enough memory. Shenyang, China Electric Co., Ltd. to undertake the industrial automation and control system design, installation, engineering and maintenance; professional maintenance States converter, DC governor, PLC programmer repair operations. Sales of the brand: France: MODICON, AEG, Modicon PLC, Schneider 140PLC Japan: FANUC, SUGAWARA, HITACHI, YASKAWA, OMRON, IDEC, SHINKO, Ann Knight, Mitsubishi, FUJI (Fuji MICREX-F series), Panasonic FP2 series PLC, SHARP (Sharp). Italy: BAUSER, MBS, GMW GOSSEN, KISSLING, MAC3 SRL, VICTOR, VALCO, STARS, TERMAF, ABLY, ITT, VEAM, UNIOP, KRAUS & NAIMER, SQUARE D, RAVARINI CASTOLDI. Collection of general inverter drive repair problems there are several interference? ① conducted interference ...... by wire, grounding wire ...... ② inductive interference from electromagnetic induction, electrostatic induction ③ ...... radiation interference by wire, inverter 6RA22 repair, maintenance, Shenyang, Shenyang on China by the China Electric Limited. Shenyang Electric Co. on people (www.zsmsy.com) strong, credible, in other industries, such as Shenyang, Liaoning province has accumulated a large number of loyal customers. The company better work attitude and constantly improving people and innovative ideas will lead you to walk hand in hand on the Shenyang brilliant, for a better future!