JPH10257672A - Power supply device and power supply unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To delay and start up supplied power supplies in good order for each power supply device, when starting up a plurality of power supplies with a same power supply by providing a delaying means for inputting after delaying the supply power supplies. SOLUTION: A delay circuit 51 consists of sequence starting input parts 53 and 54 for turning on a relay contact 52 by applying a voltage externally, main power supply input parts 55-57, a power converter 58 for converting AC that has been inputted to the main power supply into a DC, and DC output parts 59 and 60 for sequence starting output which is converted into a low- voltage DC for slave control. Then, the delay circuit 51 is incorporated into each power supply unit, a first main power supply input is inputted to the first power supply unit as it is, a second power supply using and thereafter supplies power by generating a supplying time difference in the order of connecting each power supply unit for inputting a previous operation output as a delay command signal. Furthermore, since each machine is started up in the order of the time difference, a large inrush current that concentrates temporarily is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device used for supplying power to a signal processor such as a detection sensor and a small switch, and more particularly, to an improved power supply performance for many signal processors. The present invention relates to a power supply device and a power supply unit.

[0002]

2. Description of the Related Art In general, when wiring to a signal processor (hereinafter, referred to as a slave) such as a detection sensor or a small switch installed in various devices, as shown in FIG. The main power supply 112 is connected to each of the slaves 114 having different power consumption via respective cables 113.

In this case, in order to connect the first slave group 115 to the second slave group 116 or the n-th slave group, the voltage capacity of the subsequent slave group is insufficient due to the wiring area. Are connected via a relay terminal block 118 provided with a relay power supply 117 for supplying power from the power supply. As a result, a satisfactory power supply is supplied to the subsequent slave group.

However, as shown in FIG. 12, wiring to this type of relay terminal block 118 is performed by communication cables 119 and 119 and power cables 120 and 12 connected to the master side.
0 and the communication cable 12 connected to the subsequent slave group side
., 121, and a number of wiring connection portions 123 with the power supply cables 122, 122. Wiring work for mounting a total of eight cables, four on each side, sandwiching the relay terminal block 118 is required. Power cable no longer needed 1
Insulation processing 124 is required for the cable ends from which the cable terminals 20 and 120 have been removed, and the removed relay terminal block 118 has been removed.
Are connected to external power supply cables 125, 125. For this reason, the relay terminal block 11 for connecting and fixing all cables necessary for wiring is provided.
8 and wiring work to the relay terminal block 118 is troublesome.

[0005] Further, as shown in FIG.
When the power supply devices 131a to 131c are wired so as to be activated by the same power supply, the power supply devices 131a to 131c
Of the AC / AC supplied from the same AC power supply 132
The DC converters 133a to 133c are built in, and based on the ON operation of the AC power
1a to 131c are simultaneously activated and started, and power is supplied to the connected slaves 134a to 134c based on this.

In this case, all of these power supply devices 131a to 131a to
When the start switch is turned on for 131c, a large inrush current flows temporarily to simultaneously start up all the power supply devices 131a to 131c, and a start-up failure of each power supply device occurs or the breaker is cut off. This causes a malfunction or the like of another device. For this reason, as a preventive measure to avoid such a large inrush current, at present, a timer control device for distributing and starting each power supply device is externally required to cope with the problem, but this hinders space saving and increases cost. Had the problem of becoming expensive.

[0007]

SUMMARY OF THE INVENTION Therefore, the present invention provides a power supply unit and a power supply unit which can start up a plurality of power supply units with the same power supply in a delayed order for each power supply unit. For the purpose of providing.

[0008]

According to the first aspect of the present invention,
A power supply device that converts supplied power and outputs the power,
The power supply device is provided with a delay unit for delaying and inputting the power supply.

According to a second aspect of the present invention, there is provided a delay circuit for outputting a signal with a predetermined time delay based on the input of a delay command signal, and a switch circuit for allowing input of a power supply delayed by the delay circuit. It is characterized in that it is a power supply device constituting the means.

According to a third aspect of the present invention, the operation output of another power supply device connected to the same main power supply is used as a delay command signal.
The delay means is provided with a switch circuit that allows input of a power supply operated by this signal.

According to a fourth aspect of the present invention, there is provided a power supply unit interposed between a signal control unit and a plurality of signal processing units, wherein each signal is supplied to the signal processing unit when power is supplied to the signal processing unit. A power supply circuit for generating a difference in supply time to each processing unit is provided.

According to a fifth aspect of the present invention, a supply time difference is provided in the order of connection of a plurality of signal processing units, and a plurality of signal processing units are provided in the sixth aspect of the invention. A power supply unit interposed between the signal processing unit and a delay circuit for delaying a power supply to the plurality of signal processing units.

According to a seventh aspect of the present invention, the apparatus further comprises a setting means for setting a delay time of the delay circuit.

The invention according to claim 8 is characterized in that the power supply is delayed in the connection order of the plurality of signal processing units.

[0015]

According to the present invention, when power is supplied to the power supply, the power supply is delayed by the delay means and input to the power supply. Further, when power is supplied to the power supply device with delay, the delay means outputs a signal by delaying the delay circuit for a predetermined time based on the input of the delay command signal, and supplies the supply power delayed by the delay circuit to the switch circuit. Enter by.

When the power supply is supplied to the power supply device with a delay, the delay means uses the operation output of another power supply device connected to the same main power supply as a delay command signal, and supplies the power supply operated by this signal to a switch circuit. Enter by. Further, a power supply unit is interposed between the signal control unit and the plurality of signal processing units, and when power is supplied from the power supply unit to the signal processing unit, the power supply circuit supplies a signal to each signal processing unit. Power is supplied by causing a difference in supply time to the power supply.

Further, a power supply unit is interposed between the signal control unit and the plurality of signal processing units,
When power is supplied from the power supply unit to the signal processing unit, a supply time difference is given in the connection order of the plurality of signal processing units.

Similarly, a power supply unit is interposed between a signal control unit and a plurality of signal processing units, and when power is supplied from the power supply unit to the signal processing unit, a delay circuit is provided with a plurality of signal processing units. Delay the power supply to the processing unit. Further, the delay time of the delay circuit is set to an optimum delay time by the setting means.

Further, when delaying the power supply to a plurality of signal processing units, the power supply is delayed in the order in which the units are connected.

[0020]

As a result, the supplied power can be delayed by the power supply device, so that a number of power supply devices that start up with the same power supply can be started up in order with a delay for each power supply device. For this reason, when all the power supply devices connected to the same main power supply are activated collectively, they can be started up in a distributed state, so that a large rush current temporarily concentrated at the time of startup can be avoided. Therefore, since this inrush current can be avoided, malfunctions of other devices are not induced, and a stable start can be always obtained without unexpectedly shutting off the breaker.

Further, when a power supply unit is provided as a unit to facilitate handling, and a plurality of these units are collectively started up with the same power supply, power is supplied with a difference in supply time in the order of connection of the power supply units. Therefore, each power supply unit can be started in the order of the supply time difference.

Further, a delay circuit may be incorporated to perform the delay operation, or the delay can be delayed by using the difference in the start time of the internal circuit as the delay command signal. Since such a delay means is incorporated, a timer control device for externally controlling the timer becomes unnecessary, and space saving and cost reduction can be achieved based on the omission of the timer.

Further, if the delay time of the delay circuit is set to a desired value, it is possible to start up in order with an optimum delay time. A person in charge can easily visually check the appropriateness of the start-up at the time of batch activation from outside.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. [First Embodiment] FIG. 1 shows a power supply unit 11, and this power supply unit 11 has an input connector 1 on a rectangular base 12.
3 and the output connector 14 and the external power supply connection part 15 are integrally formed into a unit, and this power supply unit 11 is interposed between the master 16 side and the slave group 17 side corresponding to the voltage drop region, and Are configured to supply a constant voltage to 17a, 17b,... To maintain stable transmission.

On one side surface of the unitized base 12, an input connector 13 which can be plugged in and removed is provided with a concave connection portion 13.
The concave connection portion 13a and the convex connection portion 18a of the cable connector 18 on the master side are connected in a lump so as to correspond to the unevenness.

In this case, as shown in FIG. 2, the cable connector 18 is connected to two communication cables 19 from the master side.
And two power cables 20 from the main power supply side. The convex connection portion 18a has connection pins 18b... Corresponding to a total of four parallel cables 19, 20, and the corresponding input connector 13 is Communication lines 21 and two power lines 2
2 are provided in the concave connection portion 13a in accordance with the four parallel lines 21 and 22 in total, and connection is permitted by a one-touch operation only for insertion operation.

The input connector 13 and the corresponding base 12
The other side has an output connector 14 that allows insertion and removal
Is mounted with a concave connecting portion 14a, and the concave connecting portion 14a and the convex connecting portion 23 of the slave input connector 23 are attached.
a are connected in a lump so as to correspond to the unevenness, and also in this case, the output connector 14 is connected to the two communication lines 21 and 2.
4 external power lines 24 and a total of 4 parallel lines 2
1 and 24 are provided in the concave connection portion 14a, and the corresponding slave input connector 23 is composed of two communication lines 25 and two power supply lines 26 on the slave 17a side. The connection pins 23b corresponding to the four parallel lines 25 and 26 are provided in the convex connection portion 23a, and connection is permitted by a one-touch operation in which a plug-in operation is performed similarly.

The input connector 13 and the output connector 1
4, a printed circuit board 27 is provided on the base 12 and various wiring lines for the communication line 21, the power supply line 22, and the external power supply line 24 are formed on the printed circuit board 27. For a power supply line 22 that is no longer needed due to a voltage drop, a power supply line cut-off portion 28 is formed to cut off the line 22 and prevent power supply. By forming the power supply line cutoff portion 28, insulation processing for the cutoff portion can be omitted, and connection of a newly connected external power supply is facilitated.

The external power supply connection section 15 is attached to the lower surface side of the base 12, to which an external power supply 29 is connected, and subsequently, an AC / DC converter (power supply) for converting the external power supply (for example, 100V to 240V to 24V DC). A converter 30 and two external power lines 24 are connected to the output connector 14 by wiring. Thus, a desired voltage requested by the slave group 17 in the voltage drop region is newly and stably supplied from the external power supply 29.

The signal processor 31 of the slave 17a connected first is driven on the basis of the voltage supplied stably, and the slave output connectors 32 which are branched from the slave 17a in the vertical and horizontal directions to the slaves at the subsequent stage. ,
33, the slave input connectors 34 and 35 at the subsequent stage
Is connected by wire. As a result, a satisfactory constant voltage can be supplied to the slaves 17a, 17b,.

When using the power supply unit 11 configured as described above, the external power supply 29 is connected to the external power supply connection portion 15 of the power supply unit 11, and the input connector 1
3 and the output connector 14 can be connected collectively simply by inserting and fitting them into the connectors 18 and 23 between the wiring corresponding portions in front of the slave group 17 respectively. In particular, this power supply unit 11
Is easy to handle because it is a unitized unit. When connecting the wires, all the wiring of the communication line and the power supply line is completed immediately by simply inserting the two connectors 13 and 14, and many wiring cables are connected one by one. It is possible to omit the manual work that is performed.

As shown in FIG. 3, a desired power supply can be easily provided to each of the slave groups 17A, 17B,... At an arrangement position corresponding to the voltage drop region simply by interposing the power supply unit 11 in the preceding stage. Can be obtained.

[Second Embodiment] FIG. 4 shows a power supply unit 41. This power supply unit 41 includes all the units from the first power supply unit U1 to which the power is supplied to the nth power supply unit Un. When the power switch is turned on for all of these units, the power supply units from the first power supply unit U1 to the n-th power supply unit Un are simultaneously started to simultaneously start up. A large inrush current flows, causing start-up failure of each unit, or the breaker 4
Since there is a problem that the interruption of the device 2 or the malfunction of other devices occurs, the device is provided with a rush current avoiding function for avoiding the rush current.

FIG. 5 shows a delay circuit 51 of the power supply unit U1 having an inrush current avoiding function. The delay circuit 51 turns on the relay contact 52 by applying an external voltage.
Sequence starting input units 53, 54, main power input units 55, 56, 57, a power converter 58 for converting the alternating current input to the main power to DC, and a low voltage DC for slave control. DC output units 59 and 60 for sequence start output to be converted.

In this case, the main power input units 55, 56, 57
Of the three wirings, the first power supply unit U1 does not require a delay time, so the circuit contact 61 is connected by a non-passing wiring (55, 57). They are connected by wiring (56, 57) passing through 61.

By incorporating the delay circuit 51 into each power supply unit and connecting them in series, the first main power supply input is directly input to the first power supply unit U1, and the previous operation output (from the second power supply unit U2). Supply time difference (for example, 0.25) in the order of connection of the power supply units U1 to Un for inputting a start time difference passing through the relay contact 52 as a delay command signal.
(approximately s), power is supplied, and the respective units rise in the order of the time difference in response to the supply time difference, so that a large rush current temporarily concentrated can be avoided.

FIG. 6 shows a case in which the delay circuit 51 is incorporated in the power supply units U1 to Un of all the units and wired and connected in the order of the units, and the power supply units U1 to Un of all the units connected to the same main power supply 62 are shown. Now, when the start switch 63 is turned on, an AC voltage is applied to the first power supply unit U1 via the power supply line 64, and this AC voltage is converted into a DC voltage by the power converter 58, and the DC output units 59, 60 Output to slave (load). This output is branched and output to the sequence start input sections 53 and 54 of the second power supply unit U2 via the branch connection line 65, and the second
The relay contact 52 of the power supply unit U2 is driven.

Based on the driving of the relay contact 52, the second
An AC voltage is applied to the power converter 58 of the power supply unit U2. The AC voltage is converted to a DC voltage by the power converter 58 and output from the DC output units 59 and 60 to the sequence start input units 53 and 54 of the next unit. Then, in conjunction with this, the relay contact 52 of the next machine is driven.

By providing such a delay circuit 51 in all of the power supply units U1 to Un, a delay time is generated for each of the power supply units, and the power supply units are distributed with a supply time difference from the first to the last nth unit. As a result, the occurrence of a large inrush current can be completely eliminated. Therefore, all the power supply units U1 to U1 connected to the same main power supply 62
Even if the start switch 63 for batch-starting the Un is turned on, the delay start operation works, so that the breaker 42 is not shut off, and a stable start can always be obtained.

[Third Embodiment] FIG. 7 shows a power supply unit 71 having a delay circuit. This power supply unit 71 has an input power supply connector 73 and an output power supply connector 74 above a rectangular base 72. , An external power input connector 75 at the bottom
A delay time operation unit 76 for delay setting the supply power, a pilot lamp 77, and a start switch 78 for manual operation are provided on the front, and a DI installed horizontally on the back.
It can be mounted as a unitized unit having a common mounting groove 80 for fitting and detachable, which can be attached to and detached from a strip-shaped mounting rail 79 such as an N-rail.

In this case, the input power connector 73 is connected to a power input cable 81 wired from the main power supply on the master side, and the other output power connector 74 is connected to each power consuming slave via the power output cable 82. Wiring connection.

At this time, if the wiring distance is long or the power consumption of the slave is large and the voltage drops on the way, the external power supply input cable 84 wired from the external AC power supply 83 is connected to the external power supply input connector 75. Connect to supply the desired voltage.

As described above, since one power supply unit 71 can select either one of the power supply from the main power supply and the power supply from the external AC power supply 83,
A power supply suitable for use conditions in a voltage drop state can be selectively used.

The delay time operating section 76 sets and operates the delay time of a delay circuit described later, and the pilot lamp 77 is turned on so that the delay state at the time of power supply from the outside can be visually checked. The start switch 78 is started by a manual operation of a staff member. Furthermore, this power supply unit 71
At the time of mounting, the mounting rail 79 suitable for mounting
It can be easily mounted at any position by simply fitting and fixing the common mounting groove 80 on the rear surface.

FIG. 8 shows a case where a delay circuit is incorporated in each of the first to third power supply units 71a to 71c and wired and connected in the unit arrangement order. Internal switch (SW
1) A setting operation of a delay time operation unit 76 which is internally provided with a built-in 86, a delay circuit 87, a power converter 88, and a start switch (SW2) 78 for manual operation as described above. , All the power supply units 71a to 71c connected to the same external AC power supply 83 can be delayed by a fixed time, and the power supply units 71a to 71c are sequentially started up at intervals of the set delay time.

The delay activation state of the power supply units 71a to 71c provided with the delay circuit thus configured will be described below. Now, when a staff member turns on a start switch (SW2) 78, an AC voltage is applied from an external AC power supply 83 to the first power supply unit 71a via an external power supply input cable 84, and the AC voltage is converted by a power converter 88 into a DC power. The voltage is converted to a voltage and output to the output power supply connector 74 side, and the output DC voltage is output to the first slave 89 via the power supply output cable 82.

This output is supplied to the second power supply unit 71b.
And the switch drive circuit 85 and the delay circuit 87 of the second power supply unit 71b are driven with a delay in conjunction with the input power supply connector 73, and the driven two circuits 8
5, 87 output the respective command signals and output them to the second slave 90 and the third power supply unit 71c via the power converter 88 of the second power supply unit 71b while performing the delay operation, in conjunction with which. Thus, the third power supply unit 71c is driven with a delay.

By providing the delay circuit 87 in all the power supply units 71a to 71c in this way, a delay time can be generated for each unit, and the power supply units can be started up in a distributed manner with a supply time difference from the first power supply unit. . For this reason,
A stable start-up can be obtained by eliminating the occurrence of a large inrush current.

FIG. 9 shows an example of the delay circuit 91. The delay circuit 91 includes a transistor Tr1, resistors R1, R2, R
3, a Zener diode D1 and a variable capacitor C1. The time constant of CR is adjusted by the variable capacitor C1 to set a predetermined delay time. A direct current is input to the delay circuit 91 as a drive signal to operate. After a predetermined delay time, the switch X1 is turned on by operating the relay X1.

FIG. 10 shows an example of the delay circuit 101. The delay circuit 101 comprises resistors R11, R12, R13, a variable capacitor C11, a capacitor C12, and a diode D11. The time constant of CR is adjusted by the variable capacitor C11. To set a predetermined delay time.
When a DC current as a drive signal is input through a coupling 102 by a transformer and operates, after a predetermined delay time, the triac 103 constituting the switch SW1 is turned on.
N.

As described above, since the supplied power can be delayed by the power supply unit, a large number of power supply units activated by the same power supply can be started up in order by delaying each power supply unit. For this reason, when all the power supply units connected to the same main power supply are started collectively, the power supply units can be started up in a distributed state, so that a large inrush current temporarily concentrated at the start up time can be avoided. Therefore, since this inrush current can be avoided, malfunctions of other devices are not induced, and a stable start can be always obtained without unexpectedly shutting off the breaker. In addition, the power supply unit is unitized to facilitate handling operability.

Further, a delay circuit may be incorporated to perform a delay operation, or a start-up time difference of an internal circuit may be delayed by using a delay command signal. A timer control device for externally controlling a timer is not required, so that space and cost can be reduced. Furthermore, since the delay time can be set to a desired value by the delay time operation unit, it is possible to start up in order with the optimum delay time. A person in charge can easily visually confirm the appropriateness of the standing from the outside.

In the correspondence between the present invention and the configuration of the above-described embodiment, the delay means of the present invention corresponds to each of the delay circuits 51, 87, 91, and 101 of the embodiment. Internal switch 86 and triac 10
3, the same main power supply corresponds to the main power supply 62 and the external AC power supply 83, the signal control unit corresponds to the master 16, and the signal processing unit corresponds to the slave groups 17, 17.
A, 17B... And the power supply circuit is a delay circuit 51
, And the setting means corresponds to the delay time operating section 76, but the present invention is not limited to only the configuration of the above-described embodiment.

[Brief description of the drawings]

FIG. 1 is a front view showing a connection state of a power supply unit according to a first embodiment of the present invention.

FIG. 2 is an essential part perspective view showing a collectively connected state of the power supply units according to the first embodiment of the present invention;

FIG. 3 is an explanatory diagram showing an arrangement state of the power supply unit according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a use state of a power supply unit according to a second embodiment of the present invention.

FIG. 5 is a delay circuit diagram of a power supply unit having an inrush current avoiding function according to a second embodiment of the present invention.

FIG. 6 is an explanatory diagram of a delay circuit showing a use state of a plurality of power supply units having an inrush current avoiding function according to the second embodiment of the present invention.

FIG. 7 is an external perspective view showing an attached state of a power supply unit according to a third embodiment of the present invention.

FIG. 8 is an explanatory diagram of a delay circuit showing a use state of a plurality of power supply units according to a third embodiment of the present invention.

FIG. 9 is a delay circuit diagram showing an example of a delay circuit used in a third embodiment of the present invention.

FIG. 10 is a delay circuit diagram showing another example of the delay circuit used in the third embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a conventional wiring connection state between a master and a slave.

FIG. 12 is an enlarged plan view of a main part showing a wiring connection state using a conventional relay terminal block.

FIG. 13 is a circuit diagram showing a use state of a conventional power supply device.

[Explanation of symbols]

11, U1 to Un, 71, 71a to 71c power supply unit 16 master 17, 17A, 17B slave group 41 power supply device 51, 87, 91, 101 delay circuit 62 main power supply 76 delay time operation unit 83 ... External AC power supply 86 ... Internal switch 103 ... Triac

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H03K 17/296 H03K 17/296 E

Claims (8)

[Claims] 1. A power supply device for converting supplied power and outputting the converted power, wherein the power supply device includes delay means for delaying and inputting the supplied power. 2. The delay means comprises a delay circuit for outputting a signal delayed by a predetermined time based on the input of the delay command signal, and a switch circuit for allowing the supply power delayed by the delay circuit to be input. 2. The power supply device according to 1. 3. A delay circuit according to claim 1, wherein said delay means includes a switch circuit which accepts an operation output of another power supply device connected to the same main power supply as a delay command signal and allows a supply power supply operated by the signal to be input. Power supply. 4. A power supply unit interposed between a signal control unit and a plurality of signal processing units, wherein when power is supplied to the signal processing unit, power is supplied to each signal processing unit. A power supply unit that constitutes a power supply circuit that causes a time difference. 5. The power supply unit according to claim 4, wherein a supply time difference is provided in the order of connection of the plurality of signal processing units. 6. A power supply unit interposed between a signal control unit and a plurality of signal processing units, the power supply unit including a delay circuit for delaying power supply to the plurality of signal processing units. Power unit. 7. The power supply unit according to claim 6, further comprising setting means for setting a delay time of the delay circuit. 8. The power supply unit according to claim 6, wherein the power supply is delayed in the order in which the plurality of signal processing units are connected.