JPS5848330A - Drive circuit for rotary solenoid switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive circuit for a rotary lenoid switch, and in particular, a rotary lenoid switch is provided for centrally controlling a plurality of controlled devices, and the rotary lenoid switch is sequentially operated. The present invention relates to a drive circuit for a rotary lenoid switch in a system control device configured to sequentially send a predetermined control signal to the plurality of controlled devices by increasing the number of controlled devices.

As a device that centrally controls multiple controlled devices.

For example, there is a system power supply control device (SPC), and in this case, a unit power supply device (UPC) corresponds to the controlled device. In a data processing system, the central processing unit (
CPU), main memory (MEM), input/output control device (IOC)
) etc., each unit power supply device (UPC) is provided, and a system power supply control device (SPC) centrally controls the unit power supply device (UPC).

In that case, when turning on the power, do not turn on all nine unit power supplies all at once, but turn them on one by one due to the power capacity.

Control is performed by a system power supply control device.

Rotary lenoid switch circuits are often used to control the sequential power-on of power supplies.

In order to operate this rotary lenoid switch circuit, the interconnected contacts of the rotary lenoid switch are inserted into the operating circuit that excites the coil of the talin lenoid switch, and once the switch is operated, it is held. In order to do this, a configuration is used in which a holding current is supplied through a resistor.

By the way, the one point of the above-mentioned interactor is designed to operate only once each time a unit power supply unit (UPC), which is one controlled device, operates.
If a fault 1, such as a poor contact, happens to occur in the interconnected contacts, it will no longer operate normally, and the data processing system will not start up without causing problems such as stopping the power-on operation midway through. It would become impossible.

An object of the present invention is to solve the above-mentioned problems and to make it possible to operate a rotary lenoid switch normally even if the interconnected contacts have poor contact. A rotary lenoid switch is provided for centrally controlling the controlled devices, and by sequentially operating the rotary lenoid switch, a predetermined control signal is sequentially sent to the plurality of controlled devices. In a drive circuit for a rotary solenoid switch in a system control device, a first auxiliary relay is excited and driven by a relay contact that excites a coil of the rotary solenoid switch;
A second auxiliary relay is provided which is excited and driven by the relay contact of the first auxiliary relay, and a break relay contact of the second auxiliary relay is provided in the operation circuit of the first auxiliary relay, and Make-up of auxiliary relay
The present invention is characterized in that a relay contact is connected in parallel to an interconnected contact of the rotary solenoid switch coil provided in the operating circuit of the rotary solenoid switch coil.

The following two aspects of the present invention will be explained with reference to the drawings. Figure 1 is.

1 is a circuit block diagram of an embodiment of the present invention, in which the circuit in the first circuit and the circuit shown in FIG.

In the figure, the left side of the two-dot chain line (Figure 1 (b)) is the system power supply control device (SPA), and the right side is the unit power supply device (U
PC) is shown.

Also, in Figure 1, SWI is the system power-on switch.

SW2 is the system power cutoff switch, RLl-S-
RL8゜RLA1 to μLAn are relays, TMl is a timer, S1 is a rotary solenoid switch coil, W
1 to W4 are rotary lenoid switches that interlock with each other.

I (R9 to ll is a resistor, cl to c8U: +7 capacitor, D
t~1) is a 6ij diode.

FIG. 2 is an operation time chart of the circuit of FIG. 1.

The following is based on the time chart shown in FIG.

The operation shown in FIG. 1 will be explained.

First, when you activate the non-locking switch SWI,
Relay RLI remains operational.

Furthermore, the timer TMI and relay RL4 are operated by the operation of switch 8W1. Next, the relay RL2 is activated by the operation of the relay RL4, and the rotary lenoid switch coil R81 is energized by the operation of the relay RL2, and each of the switches W1 to W4 is advanced by one step.

Also, this relay RL2 operation causes relay ILL7 to operate, relay RL7 operation causes relay RL8 to operate, and relay RL8 operation causes relay i'LL? Recovery, followed by relay RL8 recovery.

In other words, by operating relay RL2, relay R is activated for a short period of time.
L7 will be activated. Furthermore, the operation of relay RL4 also causes relay fLL3 to operate, and the operation of relay RL3 causes timer TM1 and relay RL4 to be restored.

Meanwhile, due to the first lunoid switch step.

Relay RLA 1 operates, and a power-on signal is sent to image device 1 . As a result, in the power supply device 1, a power-on operation is performed in the circuit section 9 (not shown), and when the power-on is completed, the break contact 1 (shown in the figure) operates and becomes open. As a result, a power-on completion signal is transmitted to the system power control device (8PC), and relay RL5 is restored. Note that relay RL5 was operating at the time when relay RL4 was restored.

Relay RL4 is activated by the restoration of relay RL5.

This relay RL4 operation causes relay 1 (L
2 operates, and in the same process as described above, the rotary solenoid coil R81 is energized, and each switch Wl-, -W
4 is further moved one step further. That is, at this time, each switch Wl'''-W4 is set to the "3" position.As a result, the relay LA2 operates and a power-on signal is sent to the power supply device 2. Power-on operation is performed in the circuit section,
When the power is turned on, the make contact shown in FIG. 1 operates and becomes closed.

As a result, a power-on completion signal is transmitted to the system power control device (8PC) side, and relay RL6 is activated.

Then, by the operation of relay RL6, relay RL4 is operated, and by the operation of relay 1 (L4), relays R and L2 are operated as before, and rotary lenoid coil R81 is excited in the same process as described above. , each switch Wl
-%-W4 is further advanced by one step.

That is, at this time, each switch is set to the position W1 to W4U@4''.As a result, relays R and LA3 operate, and a power-on signal is sent to the power supply device 3.Hereinafter,
The same operation as described above is repeated, and power is sequentially turned on to each power supply device.

As is clear from FIG. 1, each power supply device does not necessarily send its power-on completion signal in a fixed manner. The format is to notify the completion, and the power supply device shown in 9.2.4. . In order to deal with this, the system power control unit (8PC) side has two
Relays R1゜5 and L6 are prepared.The input completion signal from the former power supply is recognized by relay RL5, and the input completion signal from the latter power supply is recognized by 1J relay fLL.
6 to recognize it.

The operation explained above is a short-time operation current applied to the coils R and 81 of the rotary lenoid switch in sequence! It is done by being supplied. By the way, if the coil 81
In the conventional circuit configuration, if a contact failure occurred at the interconnected contact R81, the operation would stop.
In the configuration shown in FIG. 1, even if the defective state occurs,
Operation can continue normally.

That is, relays RL7 and RL8 have already been swayed, and as is clear from the time chart in Figure 2, the operation of these relays causes the rotary lenoid switch's coil d! During the time to be energized, the relay) LL7
This is because the operating current is supplied to the coil sill Sl in parallel with the interconnected contact 1 (81).

FIG. 3 is a block diagram of the main circuit of another embodiment of the present invention. In FIG. f'LL113 is a relay, C12 and C13 are capacitors, R12 to a1sa resistors, and DIO and Dll are diodes.

The embodiment shown in FIG. 2 is an example in which a rotary solenoid switch having a coil S1 is used for power-on control, and a rotary solenoid switch having a coil R82 is used for power-off control.

In FIG. 2, the relay contacts RLIO and RLll correspond to the relay contact RL2 shown in FIG.

Relay 1'LL12 is replaced by relay BL7 shown in s1 diagram.

Relay RL13 corresponds to relay I'LL8 shown in FIG.

Since the operation in FIG. 3 is easily understood, a detailed explanation of the operation will be omitted.

As explained above, according to the present invention, another contact is inserted in parallel with the interrupter contact of the rotary lenoid switch, and when the interrupter contact causes a contact failure, the rotary lenoid switch is operated by the added contact. This makes it possible to improve the reliability of a system that uses rotary lenoid switches to control a plurality of controlled devices.

Although the embodiment describes the case of a system power control device (8 PCs), it is clear that the present invention is not limited to this.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram of an embodiment according to the present invention. FIG. 2 is a time chart of the embodiment illustrated in FIG. FIG. 3 is a main circuit block diagram of another embodiment according to the present invention. In FIG. 1, SWI is a system power-on switch, RLI to RL8. RLAt ~ RLAn are relays,
TMl is a timer, R81 is a rotary solenoid switch coil, and Wl to W4 are rotary solenoid switches that are interlocked with each other.

Claims (1)

[Claims] A rotary solenoid switch is provided to centrally control a plurality of controlled devices, and by sequentially operating the rotary solenoid switch, a predetermined control signal sound is sequentially transmitted to the plurality of controlled devices. In a drive circuit for a rotary solenoid switch in a system control device configured to continuously send out a signal, a first auxiliary relay excited and driven by a relay contact that excites a coil of the rotary solenoid switch; A second auxiliary relay is provided which is excited and driven by a relay contact, a break relay contact of the second auxiliary relay is provided in the operating circuit of the first auxiliary relay, and a make relay of the first auxiliary relay is provided. Switch the contacts to the rotary solenoid above. 411. A drive circuit for a rotary lenoid switch, which is connected in parallel to the interconnected contacts of the coil provided in the operating circuit of the coil.