| 摘要 |
The present invention relates to a sequence control system for electric instrument facilities and, more specifically, to a sequence control system for electric instrument facilities comprising a local operating panel (LOP) for controlling electrical load (motors, heaters and valves) installed on the field under the control of a user; a motor control center (MCC) for controlling the operation of electrical load under the control of the user in a place distant from the field; a magnetic contact (MC); an electronic overcurrent relay (EOCR); an upper controller (PLC/HMI); and a sequence controller for an electrical connection between the MC, EOCR, and PLC/HMI. The sequence controller of the present invention houses, in a housing, a PCB with a sequence circuit pattern printed thereon to control the operation of electrical load according to a control command, and a relay connected to the PCB and operated according to a control command, and includes a terminal connection part having a plurality of connection terminals exposed outside the housing. |
