JPS6030187B2 - Power on/off control circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power on/off control circuit.

Generally, when power is supplied from a commercial power supply to a power supply device, a power supply on/off control circuit is required to control on/off of this power supply path.

In addition to a manual switch for operating this power on/off control circuit, a separate switch is provided for generating an IJ mote power off signal for controlling the power supply path to be turned off through the operation of this power on/off control circuit from a remote location. things are being done. FIG. 1 is a circuit diagram showing such a conventional power on/off control circuit.

In FIG. 1, 14 is a remote power-off signal generation switch 16 is a power supply device, 17 is a commercial power supply, 18 is a relay contact 19 is a break contact 21' of a B relay 20.
C relay ``22 is a manual switch, Q is a contact 23 is a make contact of B relay 20, c, contact 24 is a make contact of C relay 2, a, contact 25 and a2 contact 26 are A relay 1
8 make contacts are shown. Now, conventional power on.

The off control circuit is a circuit as shown in FIG. 1, and "by turning on the manual switch 22, the A relay 18 is operated, the A relay contacts a, 25, and a 226 are turned on, and the power is turned on. To disconnect, turn on the manual switch 22 to cancel the operation of the A relay 18 and turn off the power.Alternatively, turn on the remote power-off signal generation switch 14 to operate the C relay 21 and close the C relay's c, contact. 24
is turned on to operate the B relay 20. Due to the operation of the B relay 20, the contact point 19 of the B relay turns off, and the operation of the A relay 18 is canceled. , a2 contacts 25 and 26 are turned off, and the power is cut off. The & contact 23 of the B relay is turned on by the operation of the B relay 20, and is used to maintain the power-off state even after the remote power-off signal generating switch 14 is turned off. In the conventional power on/off control circuit shown in FIG. After deactivating the operation, the manual switch 22 must be turned on again. In addition, if a power outage occurs and the commercial power supply 17 is cut off while the power is turned off by the remote power-off signal generation switch 14, the power is turned on after the power is restored because the manual switch 22 is turned on. I end up. This invention was made to solve the above-mentioned disadvantages of the prior art, and therefore, an object of the invention is to turn off the manual switch even when the power is turned off by the remote power-off signal generation switch. Even if the power is turned off due to a power outage, the internal circuit status remains the same, and there may be a situation where the power is turned on again after the power is restored after a power outage, or a manual switch must be turned off to turn it on again. The object of the present invention is to provide a power on/off control circuit that eliminates the

The main points of the structure of this invention are as follows.

Power on. The manual switch of the OFF control circuit is a self-recovery type switch that is always in contact with a certain contact, but when pressed manually, it contacts the opposite contact and returns to the original contact when the hand is released. In addition, the circuit configuration has been devised by using a self-holding relay that remembers whether the power is on or off, and the intended purpose has been achieved.The following is an example of an embodiment of this invention with reference to the drawings. will be explained in detail.

FIG. 2 is a circuit diagram showing an embodiment of the present invention.

In Figure 2, the wings are self-holding non-recovery type relay A, 2 is self-holding non-recovery type relay B, 3 is self-holding non-recovery type relay C, 4 is self-holding non-recovery type relay D, 5 is A, relay , 6 is a B relay, AB contact 7 is a common make contact for self-holding non-recovery type relays A and B, CD contact 8 is a common switching contact for self-holding non-recovery type relays C and D, a, contact 9 and a
', Contact 10 is A, make contact of relay 5, a'', contact 11 is A, relay switching contact, b', contact 12 is B, make contact of relay 6, b, contact 13 is B, break support of relay 6. Dot 15 indicates a hand-held switch. Fig. 2 is a circuit diagram of a power on/off control circuit which is an embodiment of the present invention.

The manual switch 15 is normally in contact in the direction shown in the figure, but when the switch is pressed manually, the opposing contacts are brought into contact, and when the switch is released, it returns to its original state. This is the switch to go back. Such a switch will be called a self-restoring switch. When self-holding relay AI is activated, self-holding relay A
, B is turned off and self-holding relay B2 is driven, self-holding relay A? B's common contact ab7 is turned on. Once these are driven and the contacts operate, the state of the contacts does not change even if the drive is released. Such a relay is called a self-holding non-recovery type relay. When self-holding relay C3 is driven, it connects common contact cd8 of self-holding relays C and D to self-holding relay A' side, and when self-holding relay ○4 is disturbed, self-holding relay C and rainbow common Connect contact cd8 to self-holding relay B2 side. Once these are driven and the contacts operate, the state of the contacts does not change even if the drive is released. Therefore, it is also a self-holding non-recovery type relay,
Two. In FIG. 2, each contact is in a power-off state.

The power is turned on when the manual switch 15 is pressed. When manual switch 5 is pressed, common contact cd8 of manual switch 15 and self-holding non-recovery type relays C and D
Current flows to self-holding non-recovery type relay B2 via
Self-holding non-recovery type relay B2 is driven. As a result, common contact ab7 of self-holding non-recovery type relays A and B is turned on, relays A and 5 are driven, and contact a.b of relay A is turned on.
;a,,9,10 are turned on and the power is turned on. Here, contact a'', !1 of relay A is connected to self-holding non-recovery type relay D4, assuming that relays A and 5 are driven.
In this state, when the manual switch 15 is released when the power is turned on, the contact a of the manual switch 15 "Relay A"
. This state is the power-on state, and the power is turned off by pressing the manual switch 15 again or turning on the remote power-off signal generation switch 14. When the manual switch 15 is pressed while the power is turned on, the common contact cd8 of self-holding non-recovery type relays C and D is also connected to the self-holding non-recovery type relay A, so self-holding non-recovery type relay AI is connected to the same side. Driven self-holding non-recovery type relay A,
Common contact ab7 of relay B is turned off, and relays A and 5 are deactivated, so contacts a,, a', and 9 of relays A and 5 are turned off.
, 18 are turned off and the power is cut off. Here, when contacts a'', 1 1' of relay A, 5 are activated or released,
Connected to self-holding non-recovery type relay C3 side. In this state, when the manual switch 15 is released to complete the power off,
Current flows through contacts a'' and 11 of manual switch turtle 5 and relay A, and self-holding non-recovery type relay C3 is driven and common contact cd of self-holding non-recovery type relays C and D.
8 is connected to the self-holding non-recovery type relay B2 side, and the power is turned off. In addition, when the remote power-off signal generation switch 14 is turned on while the power is turned on, IJ relays B and 6 are driven, relays B and 13 are turned off, and IJ relays A and B are turned off.
, 5 is released, and contacts a. of relay A. ,a',
, 6, and 10 to turn off the power. Furthermore, relay A
．． Contacts a'', 11 of are connected to self-holding non-recovery type relay C3 side, so current flows through manual switch '5 and contacts a'', 11 of relay A, and self-holding relay C3 is Driven, self-holding non-recovery type IJ Ray C? The common contact cd8 of D is connected to the self-holding non-recovery type relay B2 side. Here, relay B. The contacts b', 12 are on because the relays B, 6 are driven, and the contact b', 92 of the relay B is connected via the common contact cd8 of the self-holding non-recovery type relays C, D. Current flows, drives self-holding non-recovery type relay B2, turns off common contact ab7 of self-holding non-recovery type relay A3B, turns off remote power-off signal generation switch blade 4, and drives tri-relay B6. , b, 13 are turned on, the relays A, 5 are not driven and the power-off state is maintained.As described above, the power-off state by the remote power-off signal generation switch 14 and the "manual switch No. 5" are switched on. Power off state when pressed and “
Since they are exactly the same, the power can be turned on again after being turned off using the remote power-off signal by simply pressing the manual switch AI5.

In addition, a power outage occurred after the power was cut off by the remote power-off signal, and the commercial power supply was cut off. If the power failure occurs, self-holding non-recovery type relay C3 and self-holding non-recovery type relay B2 maintain the state before the power outage. In other words, self-holding non-recovery type relay A?
Common contact ab of B is in the OFF state, self-holding non-recovery type relay C, common contact cd8 of ○ is self-holding non-recovery type relay B
Since it is connected to the 2nd side and maintains the power off state,
Even if the commercial power '7 is turned on after the dew is restored, the power-off state does not change. The following effects can be obtained by this invention.

‘1} Conventional power on.

In the off control circuit, when the power is turned off due to the remote power off signal, it is necessary to turn the manual switch off once and then turn it on again when turning it on again.However, with this invention, it is possible to press the manual switch. This alone makes it possible to re-inject it. ■ Traditional power on.

In the off control circuit, if a power outage occurs while the power is cut off by the "remote power" off signal, the power will turn back on when the power is restored, which is extremely dangerous.However, with this invention, even if a power outage occurs, Since the state before the power outage is maintained, the power off state or lightning source on state does not change between before the power outage and after the power is restored.

[Brief explanation of drawings]

FIG. 1 shows a conventional power on/off control circuit, and FIG. 2 shows an embodiment of a commercial power supply. In the figure, 1 to 4 are self-maintaining non-recovery type I, respectively.
J-rays A, B, C, D, 5 and 6 are relays A and A, respectively, ab point 7 is the common contact of A relay and B relay 2, and CD contact 8 is the common contact of C relay 3 and D relay 4. Common contacts are a, contacts 9 and a', contacts 10 and ao, contacts 11 are A,
Relay contact, B contact 13 barb, contact 12 is B, relay 6 contact, 14 is remote power-off signal generation switch, 15 is manual switch, 16 is power supply device, 17 is commercial power supply, 18 is A relay, 20 is the B relay, 21 is the C relay, 22 is the manual switch, a, contact 25 and a2 contact 26 are the contacts of the A relay 18, q contact 19 and & contact 23 are the contacts of the B relay 20, c, contact 24 is the C relay 21 contacts are shown. Shio' Zuko Z diagram

Claims (1)

[Claims] 1 A power supply on/off control circuit that controls the on/off of a power supply line that supplies power from a commercial power supply to a certain power supply device, and which itself uses the commercial power supply as a power supply, and when manually operated, a self-restoring manual switch that controls on/off of the power supply path through operation of a power on/off control circuit; A relay A_1 having a remote power-off signal generation switch that controls only the off operation of the power supply path, and make contacts a_1 and a′_1 for turning on and off the power supply path as operating contacts.
and two self-holding non-recovery type relays A and B having contact ab for energizing the relay A_1 as a common operating contact, and a switching contact cd for selectively energizing the relays A and B. two self-holding non-recovery type relays C and D having as a common operating contact, said relay C,
Said relay A_1 also has as its operating contact a switching contact a″_1 for selectively energizing D; The self-recovery type manual switch is switched to the operating position connected to the contact CD and returns to the original position when the hand is released, and the switch is turned off when the remote power-off signal generation switch is turned on. The relay B_1 to be restored, a break contact b_1 to restore the relay A_1, and a make contact b'_1 capable of selectively energizing the self-holding non-recovery type relays A and B through the switching contact cd as operating contacts. relay B_1, which is controlled by manual operation of the manual switch to turn on the make contacts a_1, a'_1 if they were previously off, or turn them off if they were on; When the remote power-off signal generation switch is turned on, the make contacts a_1, a'_1
is turned off if it was previously on, and when the make contacts a_1, a'_1 are on or off, the operating states of all the relays are as follows: Whether there has been a power outage in the commercial power supply up to that point, and if it is off, did it change from on to off by operating the manual switch, or did it change from on to off by operating the remote power-off signal generation switch? A power on/off control circuit characterized in that it is always the same regardless of whether the power is on or off.