JPS61285084A - Starting controller of electric device - Google Patents

Abstract

PURPOSE:To restart during the prescribed time at power interruption recovering time by providing a confirming relay which confirms a start by the normal operation or the restart at the power interruption recovering time. CONSTITUTION:When power sources L1, L2 are energized, confirming relays 6, 7 operate. When an operation switch 1 is then closed, a start relay 2 operates to operate an electromagnetic relay 4 to immediately start an electric device. Since the switch 1 remains closed when the power interruption is recovered, the relays 6, 7 do not operate. Accordingly, even if a contact 2a is closed by the operation of the relay 2, the relay 4 does not immediately operate. The relay 4 operates by the closure of the contact 3a by the operation of the timer 3 after the prescribed time to restart the device.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is normally started by manually turning on the operation switch, and when the power is restored, it is automatically started after a preset time of a timer. This invention relates to a start-up control device for electrical equipment.

[Conventional technology]

FIG. 2 is a circuit diagram showing a conventional device of this type.

In the figure, Ll and L2 are electrical equipment such as air conditioners (
(1) is an operation switch that is manually turned on when driving the electrical equipment, and (2) is a power supply that drives the above-mentioned power supply Ll when the operation switch is turned on.

Starting relay energized by L2, (2a)
is the operating closed contact of this starting relay, and (3) is the operating closed contact (2a) of the above power source L1. A timer that is energized by L2 and operates after a predetermined time; (3a) is the closed contact of this timer during operation; (4) is the closed contact of each of the above operations (
2a) and (3a) are operated by the electromagnetic relays energized by the power supplies L1 and L2, and the operation of the electromagnetic relays connects the electrical equipment to the power supplies L1 and L2 and starts it.

The operation shown in FIG. 2 will be explained. When the operation switch (1) is turned on, the start relay (2) operates and the contact (2a)
is closed. By closing this contact (2a), the timer (3)
) is energized and starts a two-time operation, and operates after a predetermined time to close the contact (3a). The closing of this contact (3a), together with the closing of the contact (2a), operates the electromagnetic relay (4), starting the electrical equipment and starting its operation.

If the power supplies L1 and L2 fail in this state, it goes without saying that the electrical equipment will be stopped and the starting relay (2
), timer (3), and electromagnetic relay (4) are all deenergized. Next, when the power outage is restored, the operation switch (1) remains turned on, so the start relay (2) automatically operates at the same time as the power outage is restored, and after the same operation as the above-mentioned constant operation, the start relay (2) automatically operates. Electrical equipment is restarted and operation resumes.

[Problem that the invention seeks to solve]

The above conventional device uses an electromagnetic relay (
4) is energized via the closed contact (3a) of the timer (3) when it is activated. 2. Even during normal startup, the electrical equipment cannot be turned on unless the timer (3) is activated. There was a problem with it not being able to start. If the set time of the timer (3) is short, it is fine, but if it is long, it will take a long time to start up the electrical equipment. For example, when a single room is air-conditioned by multiple air conditioners, each air conditioner is equipped with this kind of startup control device and started up one after the other. , timer (3) of No. 2 machine is set to 4 seconds, timer (3) of No. N machine is set to 2N.
Seconds.

If you set the units 1 to N to restart in sequence at 2-second intervals when power is restored, the same startup time will be required even during continuous operation (2N seconds will be required for unit N).
This means that when driving all the time.

There was a problem that it could not be started immediately.

This invention was made to solve this problem, and distinguishes between continuous operation start-up and restart when power outage is recovered, and allows for an electric power system that starts immediately at all times and restarts after a predetermined time only when power outage recovers. The purpose is to obtain a start-up control device for equipment.

[Means for solving problems]

The start-up control device for electrical equipment according to the present invention includes a confirmation relay circuit that confirms whether the start-up is due to constant operation or restart when a power outage is recovered, and is equipped with an electromagnetic relay that starts the air rooting device using the output of the confirmation relay circuit. It is designed to switch the power circuit.

[Effect]

According to this invention, when the confirmation relay circuit confirms that the restart is due to power recovery, the timer is energized, and after the timer operates, the electromagnetic relay is activated, and the confirmation relay circuit is activated during normal operation. When you confirm that there is
By bypassing the timer and immediately activating the electromagnetic relay, electrical equipment can be started immediately at all times, and after a predetermined period of time when the power is restored.

[Embodiments of the invention]

FIG. 1 is a circuit diagram showing an embodiment of the present invention.
) to (41, (2a), and (3a) are the same as the conventional device described above. (5) is a confirmation relay circuit that confirms whether it is always on or when the power is restored. It is composed of the following parts. (2b) is the operating contact of the starting relay (2), (6)
is the power supply L1, L through this operating open contact (2b)
a first confirmation relay energized and operated by (
6a) is the operating closed contact of this first confirmation relay (6);
(7) is connected to the power supply L1 via this operating closed contact (6a).
, a second confirmation relay energized and operated by L2;
(7a) is a self-holding circuit for maintaining the operating state of this second confirmation relay (which has a closed contact when the force is activated). (5a) is a self-holding circuit for maintaining the operating state of the second confirmation relay (7). The confirmation relay (7) of No. 2, that is, the confirmation relay circuit (5), is a closed contact when operating, and (5b) is also an open contact when operated.

Next, the operation shown in FIG. 1 will be explained. First, power supply L1
, L2 is energized, the power supplies L1 and L2 are not energized, and the start relay (2) is inactive when the operation switch +1+ is not turned on. The first confirmation relay (6) is activated via the contact (2b). As a result, the operating contact (6a) closes, the second confirmation relay (7) operates, and the contact (7a) closes.
) and closes the contact (5a). That is, the confirmation relay circuit (5) confirms that normal operation is in progress, and prepares to wait for a start command by turning on the operation switch (1). Next, the operation switch (
1), the starting relay (2) operates and closes the operating contact (2a). The closing of this contact (2a), coupled with the fact that the contact (5a) is in the closed state, causes the electromagnetic relay (4) to operate.

Electrical equipment is activated immediately and begins operation.

If the power supplies L1 and L2 fail in this state, the electrical equipment is stopped, and the starting relay (2), confirmation relay circuit (5), and magnetic relay (4) are all deenergized.

Next, when the power outage is restored, the start relay (2) is automatically activated at the same time as the power outage is restored, since the operation switch +11 remains turned on. On the other hand, at the same time as the power supplies L1 and L2 are restored, the first confirmation relay (6) tries to operate via the closed contact (2b), but the first confirmation relay (6) does not operate. Since the starting relay (2) operates quickly and opens the contact (2b), the first confirmation relay (6) does not operate, and therefore the contact (6a)
) will not close and the second confirmation relay (7) will not operate.

That is, at this time, the confirmation relay circuit (5) confirms that the power failure recovery operation is in progress, and maintains the contact (5a) open and the contact (5b) closed.

Therefore, the contact (2a) is activated by the operation of the starting relay (2).
Even if the contact (5a) is open, the electromagnetic relay (4) will not operate immediately even if the contact (5a) is closed. Coupled with the closing of (5b), timer (3) is automatically activated. After a predetermined period of time, the timer (3) operates to close the contact (3a), causing the contact (2a)* (5b) to close.
The electromagnetic relay (4) operates via the , and the electrical equipment is restarted.

In the above embodiment, the case where there is one electrical device is shown, but the case where there is a plurality of electrical devices is applicable.

By sequentially shifting the setting time of each timer, υ
When the power is restored, the electrical devices can be automatically restarted one after another after the set times have elapsed. In this case 2, it goes without saying that in normal times, each electrical device can be immediately activated in sequence by manually turning on each operating switch in sequence.

Further, in the above explanation, the case where the present invention is used to control an air conditioner is illustrated, but the present invention is not limited to this, and the invention is not limited to this, but the invention is started immediately manually at all times, and automatically restarted after a predetermined time when the power is restored. Needless to say, it can be widely applied as a starting control device for necessary electrical equipment.

〔Effect of the invention〕

As described above, this invention includes a confirmation relay circuit that confirms whether the startup is due to continuous operation or restarting when a power outage is recovered, so that electrical equipment is started immediately during continuous operation, and restarted after a predetermined period of time when power is restored. Since the electromagnetic relay energizing circuit is switched so as to cause a delay in starting the electrical equipment during continuous operation, the reliability and functionality of the starting control system can be greatly improved.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional device. In fig. fl+ is the operation switch, (2) is the start relay, (2
a) t(2b) is the closed contact and open contact during operation, (3)
is a timer. (3a) is the closed contact during operation, (4) is the electromagnetic relay, (
5) is a confirmation relay circuit, (5a) and (sb) are its operating closed contact and open contact, (6) is the first confirmation relay, (6a) is its operating closed contact, and (7) is Second
(7a) 1° Intermediate - The symbols shall indicate the same or equivalent parts.

Claims (3)

[Claims] (1) In a start-up control device for electrical equipment, which is normally started by manually turning on the operation switch, and automatically started after a preset time when the power is restored, the device is energized by the power supply via the operation switch. A confirmation relay circuit that normally operates by being energized by the above power supply on the condition that this starting relay does not operate, and does not operate on the condition that the above starting relay operates when a power outage is recovered, a confirmation relay circuit that always operates the above starting relay. an electromagnetic relay that activates to start the above-mentioned electrical equipment under the conditions of the operation of the start relay and the operation of the confirmation relay circuit; A start-up control device for electrical equipment, comprising a timer that operates to activate the electromagnetic relay. (2) Install multiple electrical devices, and normally start each electrical device in sequence by manually turning on each operation switch in sequence, and when a power outage recovers, each electrical device automatically starts after the preset time of each timer. 2. The start-up control device for an electrical device according to claim 1, wherein the start-up control device for an electrical device is configured to start up the electrical equipment in sequence. (3) The confirmation relay circuit includes a first confirmation relay that is energized and operated by the power supply on the condition that the starting relay is not operated, and a confirmation relay that is energized and operated by the power supply on the condition that the first confirmation relay is operated. 2. The start-up control device for electrical equipment according to claim 1, comprising a second confirmation relay and a self-holding circuit that maintains the operating state of the second confirmation relay during energization.