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Project:Formula Production Control System
Details:
The control system consists of three parts: MCC system, PLC control system, upper computer system. The MCC motor control center adopts smart MCC system design, with the variable frequency part using Allen-Bradley’s Powerflex 70 with Devicenet network interface, and with motor start and stop control using Allen-Bradley 190S series motor starter with E3 PLUS.
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Project:Dipped Line Multi Transmission System-Powerflex700
Details:
DCS adopts Allen-Brandley’s Controllogix (1756 system), with DCS master station equipped with two CPU of Controllogix5562, Controlnet network module, Ethernet network module, optical synchronised module. The Controllogix 5562 CPU with 4M memory, 0.06ms/K instruction, RS232 interface, supports LAD, FBD, SFC and TXT programming, and supports 32 tasks. Every task area has their own separate data area, and the variable-based dynamic address distribution allows user to separately define the data structure. The Add On function allows user to develop device-level control instruction.
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Project:Powerflex 700&Reliance RPM AC Motor
Details:
The main transmission control adopts the way of AC/DC→DC/VFD→Motor. AC/DC refers to rectify the input power using rectifier/ regenerative unit, then the 510~560Vdc is supplied to inverter/converter through busbarm after rectification, and after inverter/converter’s contravariance, the AC outputs to AC variable frequency motor.
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Project:Bodymaker, decorator control system upgrade in Can
Details:
The traditional control systems for bodymaker, decorator in canning industry all adopts PLC of 1990s, and mostly using AB’s PLC2, PLC3, PLC5 or Modicon’s 984-385 series as logic controller, using Autotech, SEA S3010, 1776-HSD special controller as high speed processing (Resolver) specific controller. As these products had been stopped supplying spares for years, and the control system has been using for nearly 20 years, the system is aging, high rate of failure. It needs specific programmer and communication connector, the program software can only run in DOS system, making it extremely difficult to use.
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