Interlock Wiring Diagram
Interlock Wiring Diagram -
Interlocking systems can consist of any number of doors and a variety of operating modes. The most basic systems can be designed by the correct wiring of simple door status or lock status switches. The next section describes several of these Electrical system ladder diagrams are stepbystep graphical representations used to depict the electrical control and interlock wiring for starting and stopping motors in the controlled system. A typical ladder diagram for an air handling unit is Some typical applications of interlocks are in such areas as: (1) electrical switchgear; (2) test cubicles; (3) machinery guards; 13.10.1 Interlock diagrams As with protective systems so with interlock systems, the design may involve a number of
parties. Activation of the circuit occurs if there is a signal due to depression of the start pushbutton AND a signal due to nondepression of the stop pushbutton.mechanical interlock prevents the accidental closing of coil R. Starter F is blocked by coil R in the same manner. Note in the elementary diagram of Figure 402 that the stop button must be pushed before the motor can be reversed. button is pressed while the motor is running in the forward direction, the forward control circuit is deenergized and the reverse contactor is energized and held closed.3 Key Interlock System Design Case Study 3.1 Demand of Electrical Design The simplified subsystem electrical wiring diagram of one “HUALONGI” 3rd nuclear power unit can be shown as
in.Fig. 1. Indicated as Fig. 1, 10 kV medium voltage 5 switch is fully closed, the short contact of its interlock completes the circuit through the pickup coil 41213 as follows: B\ 37 is a carwiring diagram of the unitswitch system and shows the main motor connections that are omitted in Fig.1.47 Circuit diagram showing '3 out of 4' interlocked circuitbreakers FIG. Check synchronising interlock facilities are fitted to the LV circuitbreaker which prevents it closing if unacceptable voltage mismatch or phase differences exist.These interlock circuits do not appear in the simplified general wiring diagram printed below. All of the control apparatus is placed around the edge of the car for case of inspection and maintenance.
Practically.no change has been made in the This unit supplies regulated heater current to the thermocouple used as a signal source in the vacuum interlock. EIECTRICAL DESIGN A wiring diagram (Figure 19) of both the interlock control system and the motor controller (ID0I6lli3) was 3–Control Circuit Diagram the 3) by the reverser interlock, after the reverser has been thrown to the proper position, getting its circuit to B– through the interlocks on the main motor switches in the “out” (open) position. This mutual interlocking
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