CN205594334U

CN205594334U - Control circuit is switched over in no disturbance

Info

Publication number: CN205594334U
Application number: CN201620400431.1U
Authority: CN
Inventors: 周晓明; 徐克峰; 郭鹏蛟; 纪琳; 白新敬; 于相勇
Original assignee: SHANDONG LUYITONG INTELLIGENT ELECTRICAL CO Ltd
Current assignee: SHANDONG LUYITONG INTELLIGENT ELECTRICAL CO Ltd
Priority date: 2016-05-06
Filing date: 2016-05-06
Publication date: 2016-09-21
Anticipated expiration: 2026-05-06

Abstract

The utility model discloses a control circuit is switched over in no disturbance, switch QF through fuse FU1, knob SB3 connect automatic conversion on the spot to open SA, open dynamic relay KA2 and KA1 contact, contactor KM coil, converter BPQ operating point is parallelly connected holds, SA's 6 is opened in automatic conversion on the spot, 8 the end contacts through operation relay KA2 respectively and connects automatic shutdown relay KA4 coil, SB2 connects slew relay KA3 coil on the spot through the button, operation relay KA2 contact, slew relay KA3 contact concatenates the back and connects button SB2 both ends on the spot, the automatic end of change over switch SA10 on the spot connects operation relay KA2 contact through button SB1, open the dynamic relay KA1 contact, the parallelly connected end in slew relay KA3 contact, slew relay KA3 contacts through automatic shutdown relay KA4 the contact, converter BPQ fault point, the operating point connects respectively and opens the dynamic relay KA1 coil, operation relay KA2, open dynamic relay KA1 coil, operation relay KA2 coil, slew relay KA3 coil, automatic shutdown relay KA4 coil meet control source N on the spot.

Description

A kind of switching undisturbed controls loop

Technical field

This utility model belongs to switching undisturbed technical field, especially relate to one there is Non-follow control with automatically control carry out switching undisturbed control loop.

Background technology

In production practices, if a set of automatic control system can realize automatically with manual switching undisturbed, for operative employee, that can be the most convenient, and operative employee puts into according to technological requirement in the different moment or exits and automatically controls;Start and stop state and adjustment parameter can keep constant in the handover；Keep away the impact to electrical network of stopping unnecessary in transformation process and there is power savings, and for system, also can compare safety.

Summary of the invention

The purpose of this utility model is to improve the deficiency of existing procucts and provide the general auto-manual switching undisturbed that a kind of simple in construction, reliability are high to control loop.

The purpose of this utility model is realized in, a kind of switching undisturbed controls loop, being characterized in that molded-case switch QF outgoing line side a end connects one end of normally closed jerk knob SB3 through fuse FU1, the parallel connected end of the operating point of SA, the contact of starting relay KA2, the coil of catalyst KM, the contact of starting relay KA1, frequency converter B PQ is opened in another termination conversion the most on the spot of normally closed jerk knob SB3；The contact of 6 end concatenation operation relay K A2 that SA is opened in conversion is followed by being automatically stopped coil one end of relay K A4 the most on the spot, 8 ends that SA is opened in automatic conversion the most on the spot concatenate stop button SB2 and are followed by one end of slew relay KA3 coil on the spot, run relay K A2 contact, the two ends of stop button SB2 it are attempted by the spot after the concatenation of slew relay KA3 contact, automatically after 10 termination start buttons SB1 of SA are opened in conversion the most on the spot with run relay K A2 contact, starting relay KA1 contact, the parallel connected end of slew relay KA3 contact connects, the other end concatenation of slew relay KA3 contact is automatically stopped relay K A4 contact, frequency converter B PQ trouble point is followed by starting relay KA1 coil, frequency converter B PQ operating point connects operation relay K A2；Starting relay KA1 coil, run relay K A2 coil, on the spot slew relay KA3 coil, be automatically stopped relay K A4 coil and connect end to control power supply N.

nullCompared with the prior art this utility model has following distinguishing feature and good effect: switching undisturbed of the present utility model controls loop，During local operation，Permutator SA is placed in regard to position the most on the spot，After pressing start button SB1, starting relay KA1 obtains electric adhesive，Frequency converter B PQ starts，Run relay K A2 and obtain electric adhesive，Motor has run motor and has manually booted，When being switched to automatic after manually booting，Starting relay KA1 is due to contact own and runs the self-locking of relay K A2 contact，Starting relay KA1 continues to keep charged adhesive，Motor remains on，When automatic stopping，Frequency converter B PQ receives backstage parking order，Frequency converter B PQ operating point disconnects，Run relay K A2 dead electricity，It is automatically stopped relay K A4 and obtains electric，KA3 contact disconnects，Make starting relay KA1 dead electricity，The motor motor automatic stopping that completes out of service completes to manually boot automatic stopping switching undisturbed；nullWhen automatically starting，Permutator SA is placed in automated location the most on the spot，Frequency converter B PQ is received backstage and is started order，Frequency converter B PQ operating point closes，Run relay K A2 and obtain electric，Run the relay K A2 closing of contact，Starting relay KA1 obtains electric adhesive，Frequency converter B PQ startup motor has run motor and has automatically started，When being switched to manual after automatically starting，Starting relay KA1 is due to contact own and runs the self-locking of relay K A2 contact，Starting relay KA1 continues to keep charged adhesive，Motor remains on，Stop button SB2 is pressed when manually stopping,Slew relay KA3 coil obtains electric on the spot，Starting-up later time slew relay KA3 contact on the spot disconnects，Make starting relay KA1 dead electricity，Frequency converter B PQ stops，Run relay K A2 dead electricity，Motor is out of service to be completed motor and has manually stopped and automatically start to the switching undisturbed that manually stops.

Accompanying drawing explanation

With embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is a kind of schematic diagram controlling loop of the present utility model.

Detailed description of the invention

A kind of switching undisturbed controls loop, with reference to Fig. 1, molded-case switch QF a end connects one end of normally closed jerk knob SB3 through fuse FU1, and another termination conversion the most on the spot of normally closed jerk knob SB3 opens the parallel connected end of the operating point of frequency converter B PQ of the contact of SA, the contact of starting relay KA2, the coil of catalyst KM, starting relay KA1 as controlling power supply；The contact of 6 end concatenation operation relay K A2 that SA is opened in conversion is followed by being automatically stopped coil one end of relay K A4 for being automatically stopped loop the most on the spot；8 ends that SA is opened in automatic conversion the most on the spot concatenate stop button SB2 and are followed by one end of slew relay KA3 coil on the spot, are attempted by the two ends of stop button SB2 as stop loop on the spot after running relay K A2 contact, on the spot slew relay KA3 contact concatenation；Automatically after 10 termination start buttons SB1 of SA are opened in conversion the most on the spot with run relay K A2 contact, starting relay KA1 contact, the parallel connected end of slew relay KA3 contact are connected, the other end of slew relay KA3 contact concatenates and is automatically stopped relay K A4 contact, to be followed by starting relay KA1 coil be starting-up later time in frequency converter B PQ trouble point；It is operating loop that frequency converter B PQ operating point connects operation relay K A2；Starting relay KA1 coil, run relay K A2 coil, on the spot slew relay KA3 coil, be automatically stopped relay K A4 coil and connect end to control power supply N.

Claims

1. a switching undisturbed controls loop, it is characterized in that molded-case switch QF outgoing line side a end connects one end of normally closed jerk knob SB3 through fuse FU1, the parallel connected end of the operating point of SA, the contact of starting relay KA2, the coil of catalyst KM, the contact of starting relay KA1, frequency converter B PQ is opened in another termination conversion the most on the spot of normally closed jerk knob SB3；The contact of 6 end concatenation operation relay K A2 that SA is opened in conversion is followed by being automatically stopped coil one end of relay K A4 the most on the spot, 8 ends that SA is opened in automatic conversion the most on the spot concatenate stop button SB2 and are followed by one end of slew relay KA3 coil on the spot, run relay K A2 contact, the two ends of stop button SB2 it are attempted by the spot after the concatenation of slew relay KA3 contact, automatically after 10 termination start buttons SB1 of SA are opened in conversion the most on the spot with run relay K A2 contact, starting relay KA1 contact, the parallel connected end of slew relay KA3 contact connects, the other end concatenation of slew relay KA3 contact is automatically stopped relay K A4 contact, frequency converter B PQ trouble point is followed by starting relay KA1 coil, frequency converter B PQ operating point connects operation relay K A2；Starting relay KA1 coil, run relay K A2 coil, on the spot slew relay KA3 coil, be automatically stopped relay K A4 coil and connect end to control power supply N.