CN220208126U - Contactor control module - Google Patents

Contactor control module Download PDF

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Publication number
CN220208126U
CN220208126U CN202321902277.4U CN202321902277U CN220208126U CN 220208126 U CN220208126 U CN 220208126U CN 202321902277 U CN202321902277 U CN 202321902277U CN 220208126 U CN220208126 U CN 220208126U
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China
Prior art keywords
contactor
interface
node
control system
switch
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CN202321902277.4U
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徐连鸣
徐云研
阎競
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Tianjin Zhongdi Energy Conservation Technology Co ltd
Tianjin Jujing Automation New Technology Co ltd
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Tianjin Zhongdi Energy Conservation Technology Co ltd
Tianjin Jujing Automation New Technology Co ltd
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Abstract

The utility model provides a contactor control module which comprises a control system connecting end, an operation feedback connecting end and a controlled device connecting end, wherein the contactor control module is connected with the control system, the operation feedback device and the controlled device through the control system connecting end, the operation feedback connecting end and the controlled device connecting end respectively, is connected with a contactor through the controlled device, and further controls a frequency converter to supply power to the device through the contactor; the control system connection end and the operation feedback connection end are arranged in the low-voltage control area, and the controlled equipment connection end is arranged in the high-voltage control area. The contactor control module provided by the utility model can realize the input and interpretation of the feedback signals of a plurality of contactors only by adopting one group of I/O interfaces, thereby reducing the requirement on the number of interfaces of a control system; the contactor control module provided by the utility model has great expansion potential, and can conveniently increase the number of devices so as to support the control of more devices.

Description

Contactor control module
Technical Field
The utility model belongs to the technical field of automatic control, and particularly relates to a contactor control module.
Background
In a control system of a frequency converter, a power supply circuit is often connected and disconnected between the frequency converter and electric equipment through a contactor. For an automatic control system, contactor status feedback is a key signal for the system to determine if it is operating properly: it is often required that the frequency converter is started after the contactor is closed. When the state of the contactor is inconsistent with the requirement of the control system, the fault of the control system or equipment is indicated, and the maintenance is needed in time.
The unavoidable requirement of contactor feedback signal inputs occupies contactor I/O interfaces, and the prior art typically provides a set of interfaces for each contactor individually. When a small controller is required, the number of the I/O interfaces provided by the small controller is small, and when the number of the devices is large, the insufficient number of the interfaces is likely to be caused. In order to ensure the integrity of the functions of the automatic control system, the occupation of interfaces by the contactor should be reduced as much as possible, so that more interfaces are reserved for other control functions.
In addition, in the prior art, a direct wiring mode is generally adopted to connect a control system, a contactor, an operation indicator lamp, necessary relays, insurance and other devices, so that the circuit is complex, the construction and maintenance difficulty is high, and the system reliability is low.
Disclosure of Invention
In order to solve the problems, the utility model provides a contactor control module, and the utility model can realize the input and interpretation of feedback signals of a plurality of contactors by adopting only one group of I/O interfaces, thereby reducing the number of interfaces of a control system, reducing the number of wires, reducing the construction and maintenance difficulty and improving the reliability of the system.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
as shown in fig. 1-2, the utility model provides a contactor control module, which comprises a control system connection end, an operation feedback connection end and a controlled device connection end, wherein the contactor control module is respectively connected with the control system, the operation feedback device and the controlled device through the control system connection end, the operation feedback connection end and the controlled device connection end, is connected with a contactor through the controlled device end, and further controls a frequency converter to supply power to the device through the contactor; the control system connection end and the operation feedback connection end are arranged in the low-voltage control area, and the controlled equipment connection end is arranged in the high-voltage control area;
the control system connection end at least comprises an interface S K1 、S K2 、S K3 、S K4 、S K5 、S K6 The method comprises the steps of carrying out a first treatment on the surface of the The operation feedback connection terminal at least comprises an interface S L1 、S L2 、S L3 The method comprises the steps of carrying out a first treatment on the surface of the The controlled equipment connection terminal at least comprises an interface S J1 、S J2 、S J3 、S J4 、S J5 、S J6 ；
The interface S K1 One end is connected with the feedback signal positive electrode of the control system end contactor, and the other end is sequentially connected with a resistor in series and at least comprises R 0 、R 1 、R 2 Then pass through the interface S K2 Connect the contactor feedback signal negative pole, resistance R 1 Through the node S 1 、S 2 And switch C 1-1 Parallel connection, resistance R 2 Through the node S 3 、S 4 And switch C 2-1 Parallel connection;
the interface S K3 One end is connected with a control system end DC 24V+, and the other end passes through a node S 5 ～S 6 Two parallel lines are formed:
node S 5 Series switch C 2-2 And safety FU 2 After that, through interface S L2 Access operation feedback end contactor C 2 A signal positive electrode is attracted;
node S 6 Series switch C 1-2 And safety FU 1 After that, through interface S L1 Access operation feedback end contactor C 1 A signal positive electrode is attracted;
switch C 1-1 、C 1-2 Is a contactor C 1 Linkage switch, contactor C 1 C when power-on suction 1-1 、C 1-2 Synchronous closing;
switch C 2-1 、C 2-2 Is a contactor C 2 Linkage switch, contactor C 2 C when power-on suction 2-1 、C 2-2 Synchronous closing;
the interface S K4 One end is connected with a control system end DC 24V-, and the other end is connected with a control system end DC 24V-through an interface S L3 The negative electrode is shared by the suction signals of the contactor connected with the operation feedback end;
the interface S K5 One end of the contact C is connected with a control system end contactor 1 The other end of the signal is connected in series with the safety FU 3 Relay Z 1 After the coil passes through the node S 7 DC 24V-is accessed;
the interface S K6 One end of the contact C is connected with a control system end contactor 2 The other end of the signal is connected in series with the safety FU 4 Relay Z 2 After the coil passes through the node S 7 DC 24V-is accessed;
the interface S J3 One side is connected with an AC 220V power zero line, and the other side is connected with a node S 13 ；
The interface S J4 One side is connected with an AC 220V power supply live wire, and the other side passes through a node S 11 Connection node S 9 、S 12 Thereby forming two parallel lines:
node S 9 Connecting relay Z 1 Normally open switch Z 1-1 Then pass through the interface S J2 Connecting controlled equipment end contactor C 1 Live wire end, contactor C 1 Zero line end through interface S J1 Connect back to the high voltage control area and connect to the node S 13 ；
Node S 12 Connecting relay Z 2 Normally open switch Z 2-1 Then pass through the interface S J6 Connecting controlled equipment end contactor C 2 Live wire end, contactor C 2 Zero line end through interface S J5 Connect back to the high voltage control area and connect to the node S 13 ；
The interface S J3 Through the node S 13 Connection piezoresistor RV 1 ，RV 1 The other side is connected with a node S 10 And then pass through the node S 11 Is connected to interface S J4 ；
The interface S J4 Through the node S 11 Connection piezoresistor RV 2 ，RV 2 The other side is connected with a node S 8 Node S 8 Is connected with an AC 220V power supply ground wire.
Further, the control system is used for outputting an operation signal of the controlled equipment, receiving a contactor feedback signal and providing a DC 24V power supply.
Further, the control system includes a DDC controller.
Furthermore, the control system connection end is also provided with a plurality of interfaces for connecting the control system end contactor actuation signals, and the control system end contactor actuation signals are connected with the DC 24V-after being connected with the safety and relay coils in series.
Further, the resistor R 0 The resistors are also connected in series, and the connected resistors are in one-to-one correspondence with the contactors; each contactor is correspondingly provided with two linkage normally open switches, one of the linkage normally open switches is connected in parallel with a resistor corresponding to the contactor, one end of the other linkage normally open switch is connected with a DC 24V positive electrode, the other end of the other linkage normally open switch is connected in series with a safety, and then the other end of the other linkage normally open switch is connected with an operation feedback end corresponding to a contactor actuation signal interface, and the other linkage normally open switch is connected with the contactor actuation signal positive electrode through a plurality of operation feedback end interfaces.
Further, the operation feedback end comprises at least two LED indicator lamps, the positive electrode of each indicator lamp is respectively connected with the positive electrode of the corresponding contactor actuation signal, and the negative electrodes are both connected with the common negative electrode of the contactor actuation signal.
Further, the controlled equipment end at least comprises two contactors, and each contactor is connected with a normally open switch of the relay respectively.
Compared with the prior art, the contactor control module provided by the utility model has the following advantages:
1. the contactor control module provided by the utility model can realize the input and interpretation of the feedback signals of a plurality of contactors by only adopting one group of I/O interfaces, thereby reducing the requirement on the number of interfaces of a control system.
2. The contactor control module provided by the utility model has great expansion potential, and can conveniently increase the number of devices so as to support the automatic control of more devices.
3. The contactor control module provided by the utility model has the advantages that all control signals among the control system end, the operation feedback end and the controlled equipment end connected with the contactor control module are transmitted through the module, and the connection end can use the standard plug-in type wiring terminal, so that the wiring is greatly simplified, the construction and the maintenance are convenient, and meanwhile, the reliability of the system is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute an undue limitation on the utility model. In the drawings:
FIG. 1 is a schematic circuit diagram of a contactor control module according to the present utility model;
FIG. 2 is a schematic diagram illustrating a connection between a contactor control module and an external device according to the present utility model;
fig. 3 is a schematic diagram of an expansion circuit of a contactor control module according to the present utility model.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the utility model, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present utility model can be understood by those of ordinary skill in the art in a specific case.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 and 2, the utility model provides a contactor control module, which comprises a circuit board and a control system connecting end, an operation feedback connecting end and a controlled device connecting end which are arranged on the circuit board, wherein the contactor control module is respectively connected with the control system, the operation feedback device and the controlled device through the control system connecting end, the operation feedback connecting end and the controlled device connecting end, is connected with a contactor through the controlled device end, and further controls a frequency converter to supply power to the device through the contactor; the control system connection end and the operation feedback connection end are arranged in the low-voltage control area, and the controlled equipment connection end is arranged in the high-voltage control area;
the control system connection end at least comprises an interface S K1 、S K2 、S K3 、S K4 、S K5 、S K6 The method comprises the steps of carrying out a first treatment on the surface of the The operation feedback connection terminal at least comprises an interface S L1 、S L2 、S L3 The method comprises the steps of carrying out a first treatment on the surface of the The controlled equipment connection terminal at least comprises an interface S J1 、S J2 、S J3 、S J4 、S J5 、S J6 ；
The interface S K1 One end is connected with the feedback signal positive electrode of the control system end contactor, and the other end is sequentially connected with a resistor in series and at least comprises R 0 、R 1 、R 2 Then pass through the interface S K2 Connect the contactor feedback signal negative pole, resistance R 1 Through the node S 1 、S 2 And switch C 1-1 Parallel connection, resistance R 2 Through the node S 3 、S 4 And switch C 2-1 Parallel connection;
the interface S K3 One end is connected with a control system end DC 24V+, and the other end passes through a node S 5 ～S 6 Two parallel lines are formed:
node S 5 Series switch C 2-2 And safety FU 2 After that, through interface S L2 Access operation feedback end contactor C 2 A signal positive electrode is attracted;
node S 6 Series switch C 1-2 And safety FU 1 After that, through interface S L1 Access operation feedback end contactor C 1 A signal positive electrode is attracted;
switch C 1-1 、C 1-2 Is a contactor C 1 Linkage switch, contactor C 1 C when power-on suction 1-1 、C 1-2 Synchronous closing;
switch C 2-1 、C 2-2 Is a contactor C 2 Linkage switch, contactor C 2 C when power-on suction 2-1 、C 2-2 Synchronous closing;
the interface S K4 One end is connected with a control system end DC 24V-, and the other end is connected with a control system end DC 24V-through an interface S L3 The negative electrode is shared by the suction signals of the contactor connected with the operation feedback end;
the interface S K5 One end of the contact C is connected with a control system end contactor 1 The other end of the signal is connected in series with the safety FU 3 Relay Z 1 After the coil passes through the node S 7 DC 24V-is accessed;
the interface S K6 One end connection control system terminationTouch device C 2 The other end of the signal is connected in series with the safety FU 4 Relay Z 2 After the coil passes through the node S 7 DC 24V-is accessed;
the interface S J3 One side is connected with an AC 220V power zero line, and the other side is connected with a node S 13 ，
The interface S J4 One side is connected with an AC 220V power supply live wire, and the other side passes through a node S 11 Connection node S 9 、S 12 Thereby forming two parallel lines:
node S 9 Connecting relay Z 1 Normally open switch Z 1-1 Then pass through the interface S J2 Connecting controlled equipment end contactor C 1 Live wire end, contactor C 1 Zero line end through interface S J1 Connect back to the high voltage control area and connect to the node S 13 ；
Node S 12 Connecting relay Z 2 Normally open switch Z 2-1 Then pass through the interface S J6 Connecting controlled equipment end contactor C 2 Live wire end, contactor C 2 Zero line end through interface S J5 Connect back to the high voltage control area and connect to the node S 13 ；
The interface S J3 Through the node S 13 Connection piezoresistor RV 1 ，RV 1 The other side is connected with a node S 10 And then pass through the node S 11 Is connected to interface S J4 ；
The interface S J4 Through the node S 11 Connection piezoresistor RV 2 ，RV 2 The other side is connected with a node S 8 Node S 8 Is connected with an AC 220V power supply ground wire.
Specifically, the control system is used for outputting an operation signal of the controlled equipment, receiving a contactor feedback signal and providing a DC 24V power supply.
Specifically, the control system comprises a DDC controller.
Specifically, the control system connection end is also provided with a plurality of interfaces for connecting the control system end contactor actuation signals, and the control system end contactor actuation signals are connected with the DC 24V-after being connected with the safety and relay coils in series.
Specifically, the resistor R 0 The resistors are also connected in series, and the connected resistors are in one-to-one correspondence with the contactors; each contactor is correspondingly provided with two linkage normally open switches, one of the linkage normally open switches is connected in parallel with a resistor corresponding to the contactor, one end of the other linkage normally open switch is connected with a DC 24V positive electrode, the other end of the other linkage normally open switch is connected in series with a safety, and then the other end of the other linkage normally open switch is connected with an operation feedback end corresponding to a contactor actuation signal interface, and the other linkage normally open switch is connected with the contactor actuation signal positive electrode through a plurality of operation feedback end interfaces.
Specifically, the operation feedback end comprises at least two LED indicator lamps, the positive electrode of each indicator lamp is respectively connected with the positive electrode of the corresponding contactor actuation signal, and the negative electrodes are both connected with the common negative electrode of the contactor actuation signal.
Specifically, the controlled equipment end at least comprises two contactors, and each contactor is connected with a normally open switch of the relay respectively.
With contactor C 1 Drive 1# apparatus, contactor C 2 For example, the utility model provides a method for driving the No. 2 device, which comprises the steps of controlling DC 24V+ starting signals of the No. 1-No. 2 devices through interfaces S respectively when in operation K5 ～S K6 Output and respectively utilize relay Z 1 ～Z 2 Control contactor C 1 ～C 2 . For example, when device # 1 is started, interface S K5 Output DC 24V voltage, relay Z 1 The coil is electrified, and the normally open switch Z thereof 1-1 Suction, contactor C 1 The power supply line is conducted, C 1 Is attracted to drive the linkage switch C 1-1 、C 1-2 Closing. Contactor C 2 The working principle of (a) is the same.
The control system reads S K1 、S K2 And (3) determining the actual closing condition of the contactor according to the resistance value (or the corresponding voltage and current value) of the inter-loop. For example, when the equipment is not started, all contactors are opened, and the total resistance value between loops is R 0 +R 1 +R 2 . When the contactor C 1 Linkage switch C when power-on is closed 1-1 Attraction and connect the resistor R 1 Short circuit, total resistance of the circuit becomes R 0 +R 2 . If contactor C 2 Is also powered on to close, the total resistance becomesR 0 The rest of the cases can be analogized. By reading the total resistance value (or the corresponding voltage and current value), the state of each contactor can be analyzed. To achieve the above function, R 0 ～R 2 The resistance values of the two contactors should be different from each other, and the total resistance values of all the combined states must be different from each other, so as to ensure that the total resistance values and the open/close states of the two contactors are in one-to-one correspondence.
The operation feedback end passes through the interface S L1 ～S L2 Receiving a contactor-engaging signal, e.g. when contactor C 1 When sucking, switch C 1-2 Synchronous closing, namely DC 24V+ power provided by a control system is transmitted through a node S L1 Send into the operation feedback end, correspond pilot lamp LED 1 And (5) lighting. The two paths of contactor sucking signal negative poles pass through S L3 Is connected with a control system DC 24V-to form a complete loop.
In the utility model, the piezoresistor RV 1 The two ends are respectively connected with an AC 220V live wire and a zero wire, and the piezoresistor RV 2 The two ends are respectively connected with an AC 220V fire wire and a ground wire. Once the live voltage is higher than a certain value relative to the neutral or ground, if the AC 250V is reached, the resistance of the piezoresistor suddenly drops, and the voltage is short-circuited. The air switch of the AC 220V power supply is tripped and disconnected after being short-circuited, and the power supply is stopped, so that equipment damage and safety accidents caused by high voltage are avoided.
Safety FU 1 ～FU 4 For preventing damage to the module due to excessive current.
In summary, the contactor control module provided by the utility model can realize the input and interpretation of at least two contactor feedback signals only by adopting one group of I/O interfaces, thereby reducing the requirement on the number of interfaces of a control system; all control signals among the control system end, the operation feedback end and the controlled equipment end which are connected with the module are transmitted through the module, and the connecting end can use a standard plug-in type wiring terminal, so that wiring is greatly simplified, construction and maintenance are convenient, and meanwhile, the reliability of the system is improved.
Meanwhile, the contactor control module provided by the utility model has great expansion potential, and can support more contactor control by simple modification. For example, the number of the cells to be processed,as long as the resistance R is increased by the same rule 3 ～R n Safety FU 5 ～FU n Relay Z 3 ～Z n And a linkage switch Z 3-1 ～Z n-1 、Z 3-2 ～Z n-2 The control principle is the same by expanding the control contactors to 3 to more.
For example, fig. 3 is a module circuit including 4 contactors, and in fig. 3, only one set of I/O interfaces is used to implement input and interpretation of feedback signals from four contactors.
Wherein the resistance R 3 ～R 4 Through the node S 16 ～S 19 Respectively with switch C 3-1 ～C 4-1 Parallel connection;
node S 21 Series switch C 3-2 And safety FU 5 After that, pass through the node S L4 Access linkage equipment end contactor C 3 A signal positive electrode is attracted;
node S 20 Series switch C 4-2 And safety FU 6 After that, pass through the node S L5 Access linkage equipment end contactor C 4 And sucking the signal positive electrode.
Switch C 3-1 、C 3-2 Is a contactor C 3 Ganged switches, i.e. contactors C 3 C when power-on suction 3-1 、C 3-2 And closing synchronously.
Switch C 4-1 、C 4-2 Is a contactor C 4 Ganged switches, i.e. contactors C 4 C when power-on suction 4-1 、C 4-2 And closing synchronously.
Interface S K7 One end of the contact C is connected with a control system end contactor 3 The other end of the signal is connected in series with the safety FU 7 Relay Z 3 After the coil passes through the node S 7 DC 24V-was accessed.
Interface S K8 One end of the contact C is connected with a control system end contactor 4 The other end of the signal is connected in series with the safety FU 8 Relay Z 4 After the coil passes through the node S 7 DC 24V-was accessed.
Node S 14 One side is connected withConnection point S 11 The other side is connected with a relay Z 3 Normally open switch Z 3-1 Then pass through the interface S J8 Connection contactor C 3 Fire wire end C 3 Zero line end through interface S J7 Connect back to the high voltage control area and connect to the node S 13 ；
Node S 15 One side connecting node S 11 The other side is connected with a relay Z 4 Normally open switch Z 4-1 Then pass through the interface S J10 Connection contactor C 4 Fire wire end C 4 Zero line end through interface S J9 Connect back to the high voltage control area and connect to the node S 13 。
With contactor C 1 Drive 1# apparatus, contactor C 2 Drive 2# device, contactor C 3 Drive 3# device, contactor C 4 For example, the utility model creates a method for controlling DC 24V+ starting signals of 1# to 4# equipment of the system during operation by respectively passing through a node S K5 ～S K8 Output and respectively utilize relay Z 1 ～Z 4 Control contactor C 1 ～C 4 . For example, when device # 1 is started, interface S K5 Output DC 24V voltage, relay Z 1 The coil is electrified, and the normally open switch Z thereof 1-1 Suction, contactor C 1 The power supply line is conducted, C 1 Is attracted to drive the linkage switch C 1-1 、C 1-2 Closing. Contactor C 2 ～C 4 The working principle is the same.
The control system reads S K1 、S K2 And (3) determining the actual closing condition of the contactor according to the resistance value (or the corresponding voltage and current value) of the inter-loop. For example, when the equipment is not started, all contactors are opened, and the total resistance value between loops is R 0 +R 1 +R 2 +R 3 +R 4 . When the contactor C 1 Linkage switch C when power-on is closed 1-1 Attraction and connect the resistor R 1 Short circuit, total resistance of the circuit becomes R 0 +R 2 +R 3 +R 4 . If contactor C 2 Is also powered on to close, the total resistance becomes R 0 +R 3 +R 4 The rest of the cases can be analogized. By readingAnd taking the total resistance value (or the corresponding voltage and current value) to obtain the state of each contactor. To achieve the above function, R 0 ～R 4 The resistance values of the four contactors should be different from each other, and the total resistance values of all the combined states must be different from each other, so as to ensure that the total resistance values correspond to the opening and closing states of the four contactors one by one.
The operation feedback end passes through the interface S L1 、S L2 、S L4 、S L5 The contactor actuation signal is received. For example, when contactor C 1 When sucking, switch C 1-2 Synchronous closing, namely DC 24V+ power provided by a control system is transmitted through a node S L1 Send into the operation feedback end, correspond pilot lamp LED 1 And (5) lighting. The four-way contactor suction signal negative electrode passes through S L3 Is connected with a control system DC 24V-to form a complete loop.
The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. A contactor control module, characterized by: the contactor control module is connected with the control system, the operation feedback equipment and the controlled equipment through the control system connecting end, the operation feedback connecting end and the controlled equipment connecting end respectively, and is connected with the contactor through the controlled equipment end so as to control the frequency converter to supply power to the equipment through the contactor; the control system connection end and the operation feedback connection end are arranged in the low-voltage control area, and the controlled equipment connection end is arranged in the high-voltage control area;
the control system connection end at least comprises an interface S K1 、S K2 、S K3 、S K4 、S K5 、S K6 The method comprises the steps of carrying out a first treatment on the surface of the The operation feedback connection terminal at least comprises an interface S L1 、S L2 、S L3 The method comprises the steps of carrying out a first treatment on the surface of the The controlled equipment connection terminal at least comprises an interface S J1 、S J2 、S J3 、S J4 、S J5 、S J6 ；
The interface S K1 One end is connected with the feedback signal positive electrode of the control system end contactor, and the other end is sequentially connected with a resistor in series and at least comprises R 0 、R 1 、R 2 Then pass through the interface S K2 Connect the contactor feedback signal negative pole, resistance R 1 Through the node S 1 、S 2 And switch C 1-1 Parallel connection, resistance R 2 Through the node S 3 、S 4 And switch C 2-1 Parallel connection;
the interface S K3 One end is connected with a control system end DC 24V+, and the other end passes through a node S 5 ～S 6 Two parallel lines are formed:
node S 5 Series switch C 2-2 And safety FU 2 After that, through interface S L2 Access operation feedback end contactor C 2 A signal positive electrode is attracted;
node S 6 Series switch C 1-2 And safety FU 1 After that, through interface S L1 Access operation feedback end contactor C 1 A signal positive electrode is attracted;
switch C 1-1 、C 1-2 Is a contactor C 1 Linkage switch, contactor C 1 C when power-on suction 1-1 、C 1-2 Synchronous closing;
switch C 2-1 、C 2-2 Is a contactor C 2 Linkage switch, contactor C 2 C when power-on suction 2-1 、C 2-2 Synchronous closing;
the interface S K4 One end is connected with a control system end DC 24V-, and the other end is connected with a control system end DC 24V-through an interface S L3 The negative electrode is shared by the suction signals of the contactor connected with the operation feedback end;
the interface S K5 One end of the contact C is connected with a control system end contactor 1 The other end of the signal is connected in series with the safety FU 3 Relay Z 1 After the coil passes through the node S 7 DC 24V-is accessed;
the interface S K6 One end of the contact C is connected with a control system end contactor 2 The other end of the signal is connected in series with the safety FU 4 Relay Z 2 After the coil passes through the node S 7 DC 24V-is accessed;
the interface S J3 One side is connected with an AC 220V power zero line, and the other side is connected with a node S 13 ；
The interface S J4 One side is connected with an AC 220V power supply live wire, and the other side passes through a node S 11 Connection node S 9 、S 12 Thereby forming two parallel lines:
node S 9 Connecting relay Z 1 Normally open switch Z 1-1 Then pass through the interface S J2 Connecting controlled equipment end contactor C 1 Live wire end, contactor C 1 Zero line end through interface S J1 Connect back to the high voltage control area and connect to the node S 13 ；
Node S 12 Connecting relay Z 2 Normally open switch Z 2-1 Then pass through the interface S J6 Connecting controlled equipment end contactor C 2 Live wire end, contactor C 2 Zero line end through interface S J5 Connect back to the high voltage control area and connect to the node S 13 ；
The interface S J3 Through the node S 13 Connection piezoresistor RV 1 ，RV 1 The other side is connected with a node S 10 And then pass through the node S 11 Is connected to interface S J4 ；
The interface S J4 Through the node S 11 Connection piezoresistor RV 2 ，RV 2 The other side is connected with a node S 8 Node S 8 Is connected with an AC 220V power supply ground wire.
2. A contactor control module according to claim 1, wherein: the control system is used for outputting an operation signal of the controlled equipment, receiving a contactor feedback signal and providing a DC 24V power supply.
3. A contactor control module according to claim 2, wherein: the control system includes a DDC controller.
4. A contactor control module according to claim 1, wherein: the control system connection end is also provided with a plurality of interfaces for connecting the control system end contactor actuation signals, and the control system end contactor actuation signals are connected with the safety and relay coils in series and then connected with DC 24V-.
5. A contactor control module according to claim 1, wherein: the resistor R 0 The resistors are also connected in series, and the connected resistors are in one-to-one correspondence with the contactors;
each contactor is correspondingly provided with two linkage normally open switches, one of the linkage normally open switches is connected in parallel with a resistor corresponding to the contactor, one end of the other linkage normally open switch is connected with a DC 24V positive electrode, the other end of the other linkage normally open switch is connected in series with a safety, and then the other end of the other linkage normally open switch is connected with an operation feedback end corresponding to a contactor actuation signal interface, and the other linkage normally open switch is connected with the contactor actuation signal positive electrode through a plurality of operation feedback end interfaces.
6. A contactor control module according to claim 1, wherein: the operation feedback end comprises at least two LED indicator lamps, the positive electrode of each indicator lamp is respectively connected with the positive electrode of the corresponding contactor actuation signal, and the negative electrodes are both connected with the common negative electrode of the contactor actuation signal.
7. The contactor control module according to claim 4, wherein: the controlled equipment end at least comprises two contactors, and each contactor is connected with a normally open switch of the relay respectively.
CN202321902277.4U 2023-07-19 2023-07-19 Contactor control module Active CN220208126U (en)

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Application Number Priority Date Filing Date Title
CN202321902277.4U CN220208126U (en) 2023-07-19 2023-07-19 Contactor control module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321902277.4U CN220208126U (en) 2023-07-19 2023-07-19 Contactor control module

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