毕业论文资料翻译原文-周杰伦.doc

EPC-400 control unit The EPC-400 control unit is designed and programmed to handle all necessary function of the cleaning system, in accordance with preset parameters. The display on the control is used for indication of parameter numbers and values which can be visualized on request. Normally the remaining time to next sludge discharge is displayed. Information on how to check the progress values is found in chapter 7.1.2 Fuse main switch ON/OFF LEDs for alarm inputs (red) Alarm input diagram LED for stop sequence running (yellow) LED for control program running (green) LED for external preheater on (green) External preheater ON/OFF push-button Control program ON/OFF push-button Sludge discharge push-button Alarm reset Function symbols LED for main alarm (red) LED for discharge failure (red) Display System output diagram LEDs for system output (green) Door lock  9.1.1 Fuses and related functions Board fuse Functions influenced alarm EPC-400 front board A1 F1 10 V AC supply to the board Remote alarm display black(A4 when new fuse) F2 20 V AC supply to the board Analog/digital conversion Pt-100 inputs A 1-4 A2-6 C/F EEE F3 All outputs PS 42 EPC-400 rear board A2 F2 10 V AC supply to the board A 1-4 F3 Internal communications A 1-4 At restart with new fuse, switch power ON -OFF -ON 9.2 EPC-400 parameter functions Selecting activities and parameter values is done inside the control unit cabinet. Before any parameter setting or supervision of parameters is possible, the mode selector must be set in “P” position. Parameter numbers and values are selected by means of the four pushbuttons. The two upper ones are used for parameter selection and the two lower ones for setting the values. The parameters are divided in: Process parameters (C1): P1-P19 Installation parameters (C2): P20-P99 When setting parameters at start up set the installation parameters first and then proceed with the process parameters. parameters number – increase parameters number – d