Summary of the invention
The purpose of this utility model promptly is to propose a kind of combined pair of control---2 usefulness 1 are equipped with system controller.Make it in running order controlling object Configuration Control Unit, be used for the equipment of work, realize work-stand-by state control of combination in any with minimum controller.Thereby reduce the quantity and the capacity of controller to greatest extent, reduce the controller hardware cost of investment.
The utility model is finished the technical scheme that its goal of the invention takes: it is made up of major loop and control circuit, major loop is provided with 2 controller VF1 and VF2, and the output of VF1 connects the main contacts connection controlling object M3 of controlling object M1, process A.C. contactor KM13 respectively through the main contacts of A.C. contactor KM1; The output of VF2 connects the main contacts connection controlling object M3 of controlling object M2, process A.C. contactor KM23 respectively through the main contacts of A.C. contactor KM2.
The utility model is intended to only give in running order controlling object Configuration Control Unit, is used for the controlling object of work at present state with minimum controller.In mainly being applicable to, miniwatt 2 usefulness 1 are equipped with the control occasion of system, by major loop and control loop 2 controller VF1 and VF2 are combined, realize 3 controlling object (M1-M3) are arbitrarily made with the control that dual-purpose one is equipped with state.Its middle controller VF1 and VF2 are general industrial controller (as AC converter, soft initiator etc.); Controlling object is equipment such as motor.2 controller VF1 and VF2 are combined, realize 3 controlling object (M1-M3) are arbitrarily made with the control that dual-purpose one is equipped with state.Its middle controller VF1 and VF2 are general industrial controller (as AC converter, soft initiator etc.); Controlling object is equipment such as motor.VF1, VF2 combine with 2 controllers (for example 2 AC converter), realize the dual-purpose one of 3 controlling object (for example 3 motors) M1-M3 is equipped with the control of state.VF1 and VF2 own same controlling object M3 together, under the logic control of control circuit, realize the chain interlocking of steering logic between two VF1 and the VF2.Make it have three kinds of work assembled state switching controls: (1) 1-2 combination: M1 (VF1 control) and M2 (VF2 control) duty, M3 standby (breaking away from VF1 and VF2); (2) 1-3 combinations: M1 (VF1 control) and M3 (VF2 control) duty, M2 standby (breaking away from VF2); (3) 2-3 combinations: M2 (VF2 control) and M3 (VF1 control) duty, M1 standby (breaking away from VF1).Realized the work-stand-by state control of combination in any.Each equipment all might become work and standby two states, and any 2 equipment only just can be enjoyed controller when work, break away from controller when being in stand-by state.Native system also possesses the function that the using and the reserved, dual-purpose two are equipped with; Achieve with of the various work-stand-by state control of N controller by the configuration combination N+1 above controlling object.Thereby reduce the quantity and the capacity of controller to greatest extent, stop the idle and waste of controller.The utlity model has the outstanding feature that reduces the controller hardware cost of investment to greatest extent.
Embodiment
In conjunction with the accompanying drawings, it is as follows to provide present embodiment:
Combined two control-2 usefulness 1 of present embodiment are equipped with system controller and are made up of major loop and control circuit, and major loop is provided with 2 controllers and is: frequency-variable controller VF1 and VF2; 3 controlling object are: M1 (motor 1), M2 (motor 2) and M3 (motor 3).By major loop and control loop 2 controller VF1 and VF2 are combined, realize 3 controlling object (M1-M3) are arbitrarily made with the control that dual-purpose one is equipped with state.The fixedly controlling object of VF1 is M1 (motor 1), and the fixedly controlling object of VF2 is M2 (motor 2), and VF1 and VF2 own same controlling object M3 (motor 3) together.Because VF1 and VF2 and the same power of controlling object promptly can only be controlled 1 same power motor separately at every turn.When VF1 switched to controlling object M3 by controlling object M1, do not allow VF2 to switch to controlling object M3 by controlling object M2 this moment.In like manner, when VF2 switches to controlling object M3 by controlling object M2, do not allow VF1 to switch to controlling object M3 by controlling object M1.Above interlocking switching controls is three closing of contact on positions by control handle SA, realizes three kinds of work-stand-by state switching controls:
During the SA-12 closing of contact, realize 1-2 combinations: M1 (VF1 control) and M2 (VF2 control) duty, M3 standby (breaking away from VF1 and VF2);
During the SA-13 closing of contact, realize 1-3 combinations: M1 (VF1 control) and M3 (VF2 control) duty, M2 standby (breaking away from VF2);
During the SA-23 closing of contact, realize 2-3 combinations: M2 (VF2 control) and M3 (VF1 control) duty, M1 standby (breaking away from VF1).
As shown in Figure 1, the main electrical part of its major loop has: VF1, VF2---frequency-variable controller; The startup A.C. contactor of KM10---VF1, the startup A.C. contactor of KM20---VF2; M1, M2, M3---motor 1, motor 2, motor 3 (controlling object); KM1---A.C. contactor main contacts (driving the M1 converting operation) through VF1, KM01---A.C. contactor main contacts (M1 power frequency operation); KM2---A.C. contactor main contacts (driving the M2 converting operation) through VF2, KM02---A.C. contactor main contacts (M2 power frequency operation); KM13---A.C. contactor main contacts (driving the M3 converting operation) through VF1, KM23---A.C. contactor main contacts (driving the M3 converting operation), KM03---A.C. contactor main contacts (M3 power frequency operation) through VF2.In major loop, the input end of frequency converter VF1 is connected to the main contacts that starts A.C. contactor KM10, and the output of VF1 connects the main contacts connection controlling object M3 of controlling object M1, process A.C. contactor KM13 respectively through the main contacts of A.C. contactor KM1; The input end of frequency converter VF2 is connected to the main contacts that starts A.C. contactor KM20, and the output of VF2 connects the main contacts connection controlling object M3 of controlling object M2, process A.C. contactor KM23 respectively through the main contacts of A.C. contactor KM2; Also be provided with the power frequency operation loop in major loop: the power frequency operation loop of motor M 1 is to realize by the main contacts of A.C. contactor KM01, the power frequency operation loop of motor M 2 is to realize by the main contacts of A.C. contactor KM02, and the power frequency operation loop of motor M 3 is to realize by the main contacts of A.C. contactor KM03.Main components and parts in its control circuit have: SA---and (make-position of 3 groups of contacts: SA-12 is 1-2 combinations to three assembled state switching controls knobs; SA-13 is 1-3 combinations; SA-23 is 2-3 combinations), SA-12 passes through auxiliary reclay KA13 output, SA-23 by auxiliary reclay KA23 output by auxiliary reclay KA12 output, SA-13; KM1---A.C. contactor (VF1 drives the M1 converting operation), KM01---A.C. contactor (M1 power frequency operation); KM2---A.C. contactor (VF2 drives the M2 converting operation), KM02---A.C. contactor (M2 power frequency operation); KM13---A.C. contactor (VF1 drives the M3 converting operation), KM23---A.C. contactor (VF2 drives the M3 converting operation), KM03---A.C. contactor (M3 power frequency operation).In control circuit, mainly be provided with four and switch the interlocking link:
(1) the switching interlocking link of M1 and M3 during the converting operation under VF1 drives: with the normally opened contact of the normally opened contact of KA12 and KA13 and be unified into " or " logical relation is connected to the control coil loop of KM1, the pacing items of moving as M1; Add in the control coil loop of KM1 KM10 (VF1 driving) normally opened contact and KM13 (VF1 drives M3) normally closed contact and KM01 (M1 power frequency) normally closed contact be connected into " with " logical relation, promptly under VF1 drives during the M1 converting operation, do not allow M3 to be subjected to VF1 to drive (but allowing M3 driven by VF2) again, do not allow the M1 power frequency operation simultaneously.
(2) the switching interlocking link of M2 and M3 during the converting operation under VF2 drives: with the normally opened contact of the normally opened contact of KA12 and KA23 and be unified into " or " logical relation is connected to the control coil loop of KM2, the pacing items of moving as M2; Add in the control coil loop of KM2 KM20 (VF2 driving) normally opened contact and KM23 (VF2 drives M3) normally closed contact and KM02 (M2 power frequency) normally closed contact be connected into " with " logical relation, promptly under VF2 drives during the M2 converting operation, do not allow M3 to be subjected to VF2 to drive (but allowing M3 driven by VF2) again, do not allow the M2 power frequency operation simultaneously.
(3) M3 is to the switching interlocking link between 2 AC converter VF1 and the VF2 control: with the normally opened contact of the normally opened contact of KA13 and KA23 and be unified into " or " logical relation is connected to the control coil loop of KM13 and KM23, the pacing items of moving as M3; Add in the control coil loop of KM13 (VF1 drive M3 converting operation) KM10 (VF1 driving) normally opened contact and KM1 (M1 does not move) normally closed contact and KM03 (M3 power frequency) normally closed contact be connected into " with " logical relation, promptly under VF1 drives during the M3 converting operation, do not allow M1 driven by VF1, do not allow the M3 power frequency operation simultaneously.Add in the control coil loop of KM23 (VF2 drive M3 converting operation) KM20 (VF2 driving) normally opened contact and KM2 (M2 does not move) normally closed contact and KM03 (M3 power frequency) normally closed contact be connected into " with " logical relation, promptly under VF2 drives during the M3 converting operation, do not allow M2 driven by VF2, do not allow the M3 power frequency operation simultaneously.
(4) the switching interlocking link between converting operation and the power frequency operation: the above-mentioned interlocking that has comprised power frequency to frequency conversion, the interlocking of frequency conversion to power frequency described here,---at the control coil loop of KM01 (M1 power frequency operation) series connection KM1 (M1 converting operation) normally closed contact, promptly do not allow its converting operation simultaneously during the M1 power frequency operation; At the control coil loop of KM02 (M2 power frequency operation) series connection KM2 (M2 converting operation) normally closed contact, promptly do not allow its converting operation simultaneously during the M2 power frequency operation; Add in the control coil loop of KM03 (M3 power frequency operation) KM13 (VF1 drives the M3 converting operation) normally closed contact be connected into KM23 (VF2 drives the M3 converting operation) normally closed contact " with " logical relation, promptly do not allow its converting operation (do not allowed by frequency converter VF1 or VF2 driving) simultaneously during the M3 power frequency operation no matter be.