JP6584686B2 - Elevator control circuit - Google Patents

Description

  The present invention relates to an elevator control circuit that detects that a car has traveled with at least one of a car door and a landing door open.

  Conventionally, an elevator system provided with a door-opening travel protection device that determines that the car has been opened abnormally and stops the car when the car door and the landing door are in an open state and the car leaves the door zone. A car door switch that detects the open state of the door, a landing door switch that detects the open state of the landing door, an encoder that detects the speed and movement amount of the car, a car position sensor that detects the floor reference position of each floor, There is known an elevator system including a safety controller that determines a door opening abnormality based on an abnormality determination threshold value of a car speed set with respect to a car position based on detection results of an encoder and a car position sensor. (For example, refer to Patent Document 1).

JP 5516729 A

  However, the elevator system described in Patent Document 1 uses a safety controller that performs advanced processing by software by combining information from a plurality of sensors and switches, so that the failure mode of the device becomes complicated. is there.

  Moreover, in the elevator system described in Patent Document 1, when the rope slips with respect to the sheave of the hoisting machine, the speed of the car cannot be detected, so that it is not possible to determine the door opening running abnormality. There is also a problem.

  The present invention has been made to solve the above-described problems, and can reliably detect that the car has traveled with few failure modes and at least one of the car door and the landing door opened. It is an object to obtain an elevator control circuit that can be used.

  An elevator control circuit according to the present invention is an elevator control circuit that detects that a car has traveled with at least one of a car door and a landing door open, and the car is located in an upper door zone including a landing position of the car. A first door zone relay that is energized when the car is in the vehicle, a second door zone relay that is energized when the car is in the lower door zone including the landing position of the car, and the first door zone relay and the second door A third door zone relay that is energized when the zone relay is de-energized, a car door relay that is energized when the car door is closed, and a landing door that is all closed A door closing relay having a landing door relay that is excited and a door check relay that is excited when the car door relay and the landing door relay are de-energized. And at least one of the first door zone relay and the second door zone relay is de-energized, or the third door zone relay is energized, and at least one of the car door relay and the landing door relay is de-energized. There is a door-open travel detection relay that is de-energized when the door check relay is energized, and when the door-open travel detection relay is de-energized, at least one of the car door and the landing door is A door open travel detection circuit for detecting that the car has traveled in an open state.

According to the elevator control circuit according to the present invention, the door opening travel detection circuit is configured such that at least one of the first door zone relay and the second door zone relay of the door zone check circuit is de-energized, or the third door zone relay. Has a door open travel detection relay that is de-energized when at least one of the car door relay and the landing door relay of the door closing check circuit is de-energized or the door check relay is energized. When the door open travel detection relay is de-energized, it is detected that the car has traveled with at least one of the car door and the landing door open.
Therefore, there are few failure modes, and it can be reliably detected that the car has traveled with at least one of the car door and the landing door open.

It is a functional block diagram which shows typically the elevator control circuit which concerns on Embodiment 1 of this invention. It is a relay circuit diagram which shows the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the door zone of the elevator control circuit which concerns on Embodiment 1 of this invention. It is a relay circuit diagram which shows the door closing check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention. It is a relay circuit diagram which shows the door open travel detection circuit of the elevator control circuit which concerns on Embodiment 1 of this invention. FIG. 3 is a relay circuit diagram showing a door open travel detection relay ON failure check circuit of the elevator control circuit according to the first embodiment of the present invention. It is a relay circuit diagram which shows the elevator drive circuit of the elevator control circuit which concerns on Embodiment 1 of this invention. It is a relay circuit diagram which shows the rope brake operation circuit of the elevator control circuit which concerns on Embodiment 1 of this invention. It is a sequence diagram which shows the operation | movement at the normal time of the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention. It is a sequence diagram which shows the operation | movement at the normal time of the door closing check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention. In the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows the operation | movement when an ON failure generate | occur | produces in the door zone sensor DZU. In the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows the operation | movement when an ON failure generate | occur | produces in the door zone sensor DZD. In the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows the operation | movement when an ON failure generate | occur | produces in the door zone detection relay DZA. In the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows the operation | movement when an ON failure generate | occur | produces in the door zone detection relay DZB. In the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows operation | movement when ON failure generate | occur | produces in the door zone detection relay DZC. In the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows operation | movement when an OFF failure generate | occur | produces in the door zone sensor DZU. In the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows the operation | movement when an OFF failure generate | occur | produces in the door zone sensor DZD. In the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows the operation | movement when OFF failure generate | occur | produces in the door zone detection relay DZA. In the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows operation | movement when an OFF failure generate | occur | produces in the door zone detection relay DZB. In the door zone check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows the operation | movement when OFF failure generate | occur | produces in the door zone detection relay DZC. In the door closing check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows operation | movement when an OFF failure generate | occur | produces in the car door switch GS. In the door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention, it is a sequence diagram showing an operation when an OFF failure occurs in a landing door switch DS. In the door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention, it is a sequence diagram showing an operation when an ON failure occurs in the door opening / closing detection relay 41G. In the door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention, it is a sequence diagram showing an operation when an ON failure occurs in the door opening / closing detection relay 41D. In the door closing check circuit of the elevator control circuit concerning Embodiment 1 of this invention, it is a sequence diagram which shows operation | movement when ON failure generate | occur | produces in the door opening / closing detection relay DCK. In the door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention, it is a sequence diagram showing an operation when an OFF failure occurs in the door opening / closing detection relay 41G. In the door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention, it is a sequence diagram showing an operation when an OFF failure occurs in the door opening / closing detection relay 41D. In the door closing check circuit of the elevator control circuit concerning Embodiment 1 of this invention, it is a sequence diagram which shows operation | movement when OFF failure generate | occur | produces in the door opening / closing detection relay DCK. In the door closing check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows operation | movement when a car door opens and is closed after that. In the door closing check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention, it is a sequence diagram which shows the operation | movement at the time of a landing door opening and closing after that. It is another relay circuit diagram which shows the door closing check circuit of the elevator control circuit which concerns on Embodiment 1 of this invention.

  Hereinafter, preferred embodiments of an elevator control circuit according to the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts will be described with the same reference numerals.

  In the elevator control circuit according to the present invention, the fact that the car has traveled with at least one of the car door and the landing door being open means that at least one of the car door and the landing door is open, and that the car is in an abnormal condition. Indicates that the car has left the landing position or that at least one of the car door and the landing door has been opened due to some abnormality while the car is running.

Embodiment 1 FIG.
1 is a functional block diagram schematically showing an elevator control circuit according to Embodiment 1 of the present invention. In FIG. 1, an elevator control circuit 100 includes a door zone check circuit 10, a door close check circuit 20, a door open travel detection circuit 30, a door open travel detection relay ON failure check circuit 40, an elevator drive circuit 50, and a rope brake operation circuit 60. It has.

  The door zone check circuit 10 detects whether the car includes the landing position of the car and is in a door zone where the car door and the landing door can be opened, whether the car is out of the door zone, or a component has failed. To do.

  The door closing check circuit 20 detects whether the car door and the landing door are closed, or at least one of the car door and the landing door is open, or whether a component device has failed.

  Based on the detection results in the door zone check circuit 10 and the door close check circuit 20, the door open travel detection circuit 30 detects whether or not the car has traveled with at least one of the car door and the landing door open. Further, when it is detected that the car has traveled with at least one of the car door and the landing door being open, the door-open travel detection circuit 30 operates the elevator rope brake to stop the car.

  Specifically, the door-opening travel detection circuit 30 detects that the car is outside the door zone or that a component device has failed by the door zone check circuit 10 and the door-close check circuit 20 detects the car door and the landing door. When it is detected that at least one of the doors is open or a component device has failed, it is detected that the car has traveled with at least one of the car door and the landing door open.

  The rope brakes hold the main rope in an emergency and suppress the movement of the car. When the car is stopped in the door zone, the car door and the landing door are open, and the car is opened due to some abnormality. The purpose is to prevent a passenger from being caught by operating a rope brake when the vehicle is away from the door zone.

  The door open travel detection relay ON failure check circuit 40 is provided in the door open travel detection circuit 30 and detects door open travel that is de-energized when the car travels with at least one of the car door and the landing door open. It is detected whether the relay has an ON failure.

  The elevator drive circuit 50 supplies electric power for driving the motor to the hoisting machine motor and also supplies electric power for releasing the brake to the hoisting machine brake when raising and lowering the car. Moreover, the elevator drive circuit 50 interrupts | blocks supply of the electric power with respect to a hoisting machine motor and a hoisting machine brake, when stopping a car.

  For example, the elevator drive circuit 50 detects whether or not a later-described rope brake start relay has failed to turn ON, and when detecting an ON failure, does not supply power to the hoisting machine motor and the hoisting machine brake.

  The rope brake operation circuit 60 supplies electric power for brake release to the rope brake when the door-open travel detection relay is excited. The rope brake operation circuit 60 cuts off the power supply to the rope brake when the door-open travel detection relay is de-energized.

  Here, the elevator control circuit 100 is configured by a hardware circuit mainly composed of relays and contacts. Hereinafter, a detailed configuration of each circuit of the elevator control circuit 100 will be described.

  FIG. 2 is a relay circuit diagram showing a door zone check circuit of the elevator control circuit according to Embodiment 1 of the present invention. In FIG. 2, the door zone check circuit 10 includes door zone sensors DZU, DZD, door zone detection relays DZA, DZB, DZC, a contact point DZAa, DZBa, DZCa of the door zone detection relay, and b contact points DZAb, DZBb of the door zone detection relay. Have.

  The door zone sensor DZU is turned on when the car is in the upper door zone including the landing position of the car, and is turned off when the car is outside the upper door zone. The door zone sensor DZD is turned on when the car is in the lower door zone including the landing position of the car, and is turned off when the car is outside the lower door zone.

  FIG. 3 is an explanatory diagram showing a door zone of the elevator control circuit according to Embodiment 1 of the present invention. In FIG. 3, a plate corresponding to the upper door zone and a plate corresponding to the lower door zone are vertically shifted in a hoistway (not shown). In addition, an overlapping portion between the upper door zone and the lower door zone is a door zone that can open the car door and the landing door.

  FIG. 4 is a relay circuit diagram showing a door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention. In FIG. 4, the door closing check circuit 20 includes a car door switch GS, a landing door switch DS-T, DS-N, DS-B, door opening / closing detection relays 41G, 41D, DCK, a contact 41Ga of the door opening / closing detection relay, 41Da, DCKa, and door contact detection relay contacts 41Gb, 41Db.

  The car door switch GS is turned on when the car door is closed, and is turned off when the car door is open. The landing door switches DS-T, DS-N, and DS-B are turned on when the landing door is closed, and are turned off when the landing door is open.

  In FIG. 4, three landing door switches are shown, but this is schematically shown, and the landing door switches are installed on each floor. Further, the car door switch GS and the landing door switches DS-T, DS-N, and DS-B are switches with a forced separation mechanism, and it is not necessary to assume that an ON failure occurs.

  FIG. 5 is a relay circuit diagram showing a door-open running detection circuit of the elevator control circuit according to Embodiment 1 of the present invention. In FIG. 5, the door-open travel detection circuit 30 includes door-open travel detection relays GTS, GTSX, a-contact GTSA, GTSXa of the door-open travel detection relay, a-contact PFa of the rope brake start relay PF, a-contact DZAa of the door zone detection relay. , DZBa, door zone detection relay b contact DZCb, door open / close detection relay a contact 41Ga, 41Da, and door open / close detection relay b contact DCKb.

  FIG. 6 is a relay circuit diagram showing a door-open running detection relay ON failure check circuit of the elevator control circuit according to Embodiment 1 of the present invention. In FIG. 6, the door open travel detection relay ON failure check circuit 40 includes a rope brake start relay PF, an a contact PFa of the rope brake start relay PF, b contacts GTSb and GTSXb of the door open travel detection relay, and a transistor DPF. ing.

  FIG. 7 is a relay circuit diagram showing the elevator drive circuit of the elevator control circuit according to Embodiment 1 of the present invention. In FIG. 7, the elevator drive circuit 50 includes a hoisting machine motor drive contactor 5, a hoisting machine brake releasing contactor LB, an a contact 5a of the hoisting machine motor driving contactor 5, a b contact PFb of the rope brake starting relay PF, and a transistor D5. And a transistor DLB.

  FIG. 8 is a relay circuit diagram showing a rope brake operation circuit of the elevator control circuit according to Embodiment 1 of the present invention. In FIG. 8, the rope brake operation circuit 60 includes a rope brake release relay S and a-contacts GTSa and GTSXa of door open travel detection relays.

  Hereinafter, the operation of each relay circuit of the elevator control circuit 100 configured as described above will be described. First, the normal operation of the door zone check circuit 10 when the car is rising will be described with reference to the sequence diagram of FIG. 9 together with FIG. In each of the following sequence diagrams, the hatched portion indicates the ON state and the portion other than the hatched portion indicates the OFF state.

  2 and 9, when the elevator is turned on, although the door zone sensors DZU and DZD are in the ON state, the a-contacts DZAa and DZBa are open, so the third door zone detection relay DZC ( The third door zone relay) is excited and the a contact DZCa is closed. When the a-contact DZCa is closed, the door zone detection relay DZA (first door zone relay) in the first stage in the figure is excited, and the a-contact DZAa is closed.

  When the a contact DZAa is closed, the door zone detection relay DZB (second door zone relay) in the second stage in the figure is excited, and the a contact DZBa is closed. When the a contacts DZAa and DZBa are closed, the b contacts DZAb and DZBb are opened, so that the door zone detection relay DZC is de-energized and the a contact DZCa is opened.

  Thereafter, when the car rises and the door zone sensor DZD is turned off, the door zone detection relay DZB is de-energized and the a contact DZBa is opened. When the car further rises and the door zone sensor DZU is turned off, the door zone detection relay DZA is de-energized and the a-contact DZAa is opened.

  At this time, since the b contacts DZAb and DZBb are closed, the door zone detection relay DZC is excited and the a contact DZCa is closed. Thereafter, when the car rises and the door zone sensors DZU and DZD are turned on again, the door zone detection relays DZA and DZB are excited as described above, and the a contacts DZAa and DZBa are closed. Even when the car descends, the door zone check circuit 10 operates in the same manner.

  That is, as shown in FIGS. 2 and 9, when the car is in the door zone where the car door and the landing door can be opened, the door zone detection relay a contacts DZAa and DZBa and the door zone detection relay b contact DZCb are all closed. It is in the state. Also, the car is usually in the door zone when the elevator is turned on.

  Next, the normal operation of the door closing check circuit 20 will be described with reference to the sequence diagram of FIG. 10 together with FIG. 4 and 10, when the elevator is turned on, the car contacts GS and landing door switches DS-T, DS-N, and DS-B are in the ON state, but the a contacts 41Ga and 41Da are open. .

  Therefore, the door opening / closing detection relay DCK (door check relay) in the third stage in the figure is excited, and the a contact DCKa is closed. When the a contact DCKa is closed, the door opening / closing detection relay 41G (the car door relay) in the first stage in the figure is excited, and the a contact 41Ga is closed.

  When the a-contact 41Ga is closed, the door opening / closing detection relay 41D (a landing door relay) in the second stage in the figure is excited, and the a-contact 41Da is closed. When the a contacts 41Ga and 41Da are closed, the b contacts 41Gb and 41Db are opened, so that the door open / close detection relay DCK is de-energized and the a contact DCKa is opened.

  Thereafter, when the landing door is opened and the landing door switches DS-T, DS-N, and DS-B are turned off, the door opening / closing detection relay 41D is de-energized and the a contact 41Da is opened. When the car door is opened and the car door switch GS is turned off, the door open / close detection relay 41G is de-energized and the a contact 41Ga is opened.

  At this time, since the b contacts 41Gb and 41Db are closed, the door open / close detection relay DCK is excited and the a contact DCKa is closed. Thereafter, when the landing door and the car door are closed and the car door switch GS and the landing door switches DS-T, DS-N, and DS-B are turned on, the door open / close detection relays 41G and 41D are excited as described above. The a contacts 41Ga and 41Da are closed.

  That is, as shown in FIGS. 4 and 10, when the car door and the landing door are all closed, the a contacts 41Ga and 41Da of the door open / close detection relay and the b contact DCKb of the door open / close detection relay are all closed. Yes. In addition, when the elevator is turned on, all the car doors and landing doors are normally closed.

  Next, the operation of the door open travel detection relay ON failure check circuit 40 will be described with reference to FIG. In FIG. 6, when the elevator power is turned on, a rope brake start command is output from an elevator control panel (not shown) to the transistor DPF.

  At this time, since the b contacts GTSb and GTSXb are closed, the rope brake start relay PF is excited and the a contact PFa is closed. In addition, when either of the door-opening travel detection relays GTS and GTSX shown in FIG. 5 is on-failed, either of the b contacts GTSb and GTSXb is opened, so the rope brake start relay PF is not excited, As will be described later, the rope brake is not started.

  Here, the rope brake start command is a command to turn on the transistor DPF only once for an arbitrarily set time in advance when the elevator is turned on. Therefore, once the rope brake start relay PF is excited, the transistor DPF is turned OFF, whereby the rope brake start relay PF is de-energized and the a-contact PFa is opened.

  Next, the operation of the elevator drive circuit 50 will be described with reference to FIG. In FIG. 7, after the elevator power is turned on and the rope brake start relay PF shown in FIG. 6 is once excited, the b contact PFb is closed after the rope brake start relay PF is de-energized. continuing.

  At this time, when a drive command for the hoisting machine motor is output from the elevator control panel to the transistor D5, the b-contact PFb is closed, so that the hoisting machine motor driving contactor 5 is excited and the hoisting machine motor is excited. Is driven and the a contact 5a is closed.

  In this state, when the hoisting machine brake release command is output from the elevator control panel to the transistor DLB, the a contact 5a is closed, so that the hoisting machine brake release contactor LB is excited and the hoisting machine brake release contactor LB is excited. Upper machine brake is released.

  When the rope brake start relay PF shown in FIG. 6 is in an ON failure, the b-contact PFb is opened, so that the hoisting machine motor drive contactor 5 is not excited and the hoisting machine motor is not driven. Further, when the hoisting machine motor drive contactor 5 is not excited, the contact a 5a is not closed, so that the hoisting machine brake releasing contactor LB is not excited and the hoisting machine brake is not released.

  Next, the operation of the door-open travel detection circuit 30 will be described with reference to FIG. In FIG. 5, when the elevator power is turned on and the rope brake start relay PF shown in FIG. 6 is excited, the a contact PFa is closed.

  Here, as described above, when the elevator is turned on, the car is normally in the door zone, and the car door and the landing door are all closed. Therefore, the a contact DZAa, DZBa, and the b contact DZCb are all closed. The a contacts 41Ga, 41Da and the b contact DCKb are all closed.

  Therefore, the door-open travel detection relays GTS and GTSX are excited, and the a contacts GTSa and GTSXa are closed. Even after the rope brake start relay PF is de-energized, the door opening travel detection circuit 30 is held because the a contacts GTSa and GTSXa are closed.

  In FIG. 5, when at least one of the a-contacts DZAa, DZBa, and the b-contact DZCb is opened and at least one of the a-contacts 41Ga, 41Da, and the b-contact DCKb is opened, the door-open travel detection relays GTS, GTSX Is de-energized and the a contacts GTSa and GTSXa are opened.

  Specifically, at least one of the a-contact DZAa, DZBa, and the b-contact DZCb is opened when the car is out of the door zone or a component device of the door zone check circuit 10 has failed. Further, at least one of the a-contact 41Ga, 41Da, and the b-contact DCKb is opened due to at least one of the car door and the landing door being open, or the door-closing check circuit 20 constituting device having failed.

  That is, for example, when the car runs with at least one of the car door and the landing door open and leaves the door zone, at least one of the a contact DZAa, DZBa, and the b contact DZCb is opened, and the a contact 41Ga, 41Da. Since at least one of the b-contact DCKb is opened, the door-open running detection relays GTS and GTSX are de-excited.

  Further, when at least one of the car door and the landing door is opened in a state where the components of the door zone check circuit 10 are broken, at least one of the a contact DZAa, DZBa, and the b contact DZCb is opened, and the a contact 41Ga. , 41 Da, and b contact DCKb are opened, so that the door-open running detection relays GTS and GTSX are de-excited. The failure state of the constituent devices of the door zone check circuit 10 will be described later.

  Further, even when the car runs while the components of the door closing check circuit 20 are out of order and are out of the door zone, at least one of the a contact DZAa, DZBa, and the b contact DZCb is opened, and the a contact 41Ga, 41Da, Since at least one of the b-contact DCKb and the b-contact DCKb is opened, the door-open running detection relays GTS and GTSX are not excited. The failure state of the constituent devices of the door closing check circuit 20 will be described later.

  As described above, the rope brake start command is a command to turn on the transistor DPF only once, so that the rope brake start relay PF shown in FIG. 6 is energized again as long as the elevator power supply continues. It will never be done. Therefore, the a contact PFa is not closed again, and the state where the a contacts GTSa and GTSXa are opened is maintained.

  Next, the operation of the rope brake operation circuit 60 will be described with reference to FIG. In FIG. 8, when the elevator is turned on, the rope brake start relay PF shown in FIG. 6 is excited, and the door-opening travel detection relays GTS, GTSX shown in FIG. 5 are excited, the a contacts GTSa, GTSXa Closes. Thereby, the rope brake release relay S is excited and the rope brake is released.

  Note that at least one of the a contacts DZAa, DZBa, and b contact DZCb shown in FIG. 5 is opened, and at least one of the a contacts 41Ga, 41Da, and b contact DCKb is opened, the a contacts GTSa, GTSXa are opened. If this happens, the rope brake release relay S is de-energized, the rope brake is activated, and the car is stopped.

  In addition, when either of the door-opening travel detection relays GTS and GTSX shown in FIG. 5 has an ON failure, one of the b-contacts GTSb and GTSXb shown in FIG. 6 opens, so the rope brake start relay PF Is not excited. Therefore, both the a contacts GTSa and GTSXa shown in FIG. 5 are not closed, and the rope brake release relay S remains de-energized and the rope brake does not start.

  Hereinafter, with reference to the sequence diagrams of FIGS. 11 to 20 together with FIG. 2, the operation when a failure occurs in the components of the door zone check circuit 10 when the car is rising will be described.

  FIG. 11 is a sequence diagram showing an operation when an ON failure occurs in the door zone sensor DZU in the door zone check circuit of the elevator control circuit according to the first embodiment of the present invention. 2 and 11, when an ON failure occurs in the door zone sensor DZU, the a contact DZAa remains closed and the a contact DZBa cannot be closed. That is, the a contact DZBa shown in FIG. 5 is opened.

  FIG. 12 is a sequence diagram showing an operation when an ON failure occurs in the door zone sensor DZD in the door zone check circuit of the elevator control circuit according to the first embodiment of the present invention. 2 and 12, when an ON failure occurs in the door zone sensor DZD, the a contact DZAa remains closed and the a contact DZAa cannot be closed. That is, the a contact DZAa shown in FIG. 5 is opened.

  FIG. 13 is a sequence diagram showing an operation when an ON failure occurs in the door zone detection relay DZA in the door zone check circuit of the elevator control circuit according to the first embodiment of the present invention. 2 and 13, when an ON failure occurs in the door zone detection relay DZA, the a contact DZAa remains closed and the a contact DZBa cannot be closed. That is, the a contact DZBa shown in FIG. 5 is opened.

  FIG. 14 is a sequence diagram showing an operation when an ON failure occurs in the door zone detection relay DZB in the door zone check circuit of the elevator control circuit according to the first embodiment of the present invention. 2 and 14, when an ON failure occurs in the door zone detection relay DZB, the a contact DZBa remains closed and the a contact DZAa cannot be closed. That is, the a contact DZAa shown in FIG. 5 is opened.

  FIG. 15 is a sequence diagram showing an operation when an ON failure occurs in the door zone detection relay DZC in the door zone check circuit of the elevator control circuit according to Embodiment 1 of the present invention. 2 and 15, when an ON failure occurs in the door zone detection relay DZC, the a contact DZCa cannot be opened. That is, the b contact DZCb shown in FIG. 5 is in an open state.

  FIG. 16 is a sequence diagram showing an operation when an OFF failure occurs in the door zone sensor DZU in the door zone check circuit of the elevator control circuit according to the first embodiment of the present invention. 2 and 16, when an OFF failure occurs in the door zone sensor DZU, the a contacts DZAa and DZBa cannot be closed. That is, the a contacts DZAa and DZBa shown in FIG. 5 are opened.

  FIG. 17 is a sequence diagram showing an operation when an OFF failure occurs in the door zone sensor DZD in the door zone check circuit of the elevator control circuit according to the first embodiment of the present invention. 2 and 17, when an OFF failure occurs in the door zone sensor DZD, the a contact DZBa cannot be closed. That is, the a contact DZBa shown in FIG. 5 is opened.

  FIG. 18 is a sequence diagram showing an operation when an OFF failure occurs in the door zone detection relay DZA in the door zone check circuit of the elevator control circuit according to the first embodiment of the present invention. 2 and 18, when an OFF failure occurs in the door zone detection relay DZA, the a contacts DZAa and DZBa cannot be closed. That is, the a contacts DZAa and DZBa shown in FIG. 5 are opened.

  FIG. 19 is a sequence diagram showing an operation when an OFF failure occurs in the door zone detection relay DZB in the door zone check circuit of the elevator control circuit according to the first embodiment of the present invention. 2 and 19, when an OFF failure occurs in the door zone detection relay DZB, the contact a DZBa cannot be closed. That is, the a contact DZBa shown in FIG. 5 is opened.

  FIG. 20 is a sequence diagram showing an operation when an OFF failure occurs in the door zone detection relay DZC in the door zone check circuit of the elevator control circuit according to the first embodiment of the present invention. 2 and 20, when an OFF failure occurs in the door zone detection relay DZC, the a contacts DZAa and DZBa cannot be closed. That is, the a contacts DZAa and DZBa shown in FIG. 5 are opened.

  Hereinafter, the operation when a failure occurs in the constituent devices of the door closing check circuit 20 will be described with reference to the sequence diagrams of FIGS. As described above, the car door switch GS and the landing door switch DS are each a switch with a forced separation mechanism, and it is not necessary to assume that an ON failure occurs.

  FIG. 21 is a sequence diagram showing an operation when an OFF failure occurs in the car door switch GS in the door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention. 4 and 21, when an OFF failure occurs in the car door switch GS, the a contacts 41Ga and 41Da are not closed. That is, the a contacts 41Ga and 41Da shown in FIG. 5 are opened.

  FIG. 22 is a sequence diagram showing an operation when an OFF failure occurs in the landing door switch DS in the door closing check circuit of the elevator control circuit according to the first embodiment of the present invention. 4 and 22, when an OFF failure occurs in the landing door switch DS, the contact a 41Da cannot be closed. That is, the a contact 41Da shown in FIG. 5 is opened.

  FIG. 23 is a sequence diagram showing an operation when an ON failure occurs in the door opening / closing detection relay 41G in the door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention. 4 and 23, when an ON failure occurs in the door open / close detection relay 41G, the a contact 41Ga remains closed and the a contact 41Da cannot be closed. That is, the a contact 41Da shown in FIG. 5 is opened.

  FIG. 24 is a sequence diagram showing an operation when an ON failure occurs in the door opening / closing detection relay 41D in the door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention. 4 and 24, when an ON failure occurs in the door opening / closing detection relay 41D, the a contact 41Da remains closed and the a contact 41Ga cannot be closed. That is, the a contact 41Ga shown in FIG. 5 is opened.

  FIG. 25 is a sequence diagram showing an operation when an ON failure occurs in the door open / close detection relay DCK in the door close check circuit of the elevator control circuit according to Embodiment 1 of the present invention. 4 and 25, when an ON failure occurs in the door open / close detection relay DCK, the a contact DCKa cannot be opened. That is, the b contact DZKb shown in FIG. 5 is in an open state.

  FIG. 26 is a sequence diagram showing an operation when an OFF failure occurs in the door opening / closing detection relay 41G in the door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention. 4 and 26, when an OFF failure occurs in the door opening / closing detection relay 41G, the a contacts 41Ga and 41Da are not closed. That is, the a contacts 41Ga and 41Da shown in FIG. 5 are opened.

  FIG. 27 is a sequence diagram showing an operation when an OFF failure occurs in the door opening / closing detection relay 41D in the door closing check circuit of the elevator control circuit according to Embodiment 1 of the present invention. 4 and 27, when an OFF failure occurs in the door opening / closing detection relay 41D, the a contact 41Da is not closed. That is, the a contact 41Da shown in FIG. 5 is opened.

  FIG. 28 is a sequence diagram showing an operation when an OFF failure occurs in the door open / close detection relay DCK in the door close check circuit of the elevator control circuit according to the first embodiment of the present invention. 4 and 28, when an OFF failure occurs in the door opening / closing detection relay DCK, the a contacts 41Ga and 41Da are not closed. That is, the a contacts 41Ga and 41Da shown in FIG. 5 are opened.

As described above, according to the first embodiment, the door-open travel detection circuit is configured such that at least one of the first door zone relay and the second door zone relay of the door zone check circuit is not excited, or the third door When the zone relay is energized and at least one of the car door relay and the landing door relay of the door closing check circuit is de-energized, or the door open travel detection relay that is de-energized when the door check relay is energized And when the door-open travel detection relay is de-energized, it detects that the car has traveled with at least one of the car door and the landing door open.
Here, by configuring each of the door zone check circuit, the door closing check circuit, and the door opening traveling detection circuit with a relay circuit, the failure mode can be reduced as compared with a controller that performs processing by software.
Therefore, there are few failure modes, and it can be reliably detected that the car has traveled in a state where at least one of the car door and the landing door is open.

  In the door closing check circuit 20 shown in the first embodiment, even when the car door is opened due to some abnormality during the running of the car and the door opening running is detected and the rope brake is activated, The normal operation can be restored by closing the car door, confirming safety, and exciting the rope brake start relay PF.

  Hereinafter, the operation when the car door is opened and then closed in the door closing check circuit 20 will be described with reference to the sequence diagram of FIG. 29 together with FIG. 4 and 29, after the a contact 41Ga is closed, when the car door is opened and the car door switch GS is turned off, the door open / close detection relay 41G is de-energized and the a contact 41Ga is opened.

  Thereby, even when the landing door is closed, the door opening / closing detection relay 41D is de-energized and the a contact 41Da is opened. At this time, since the b contacts 41Gb and 41Db are closed, the door open / close detection relay DCK is excited and the a contact DCKa is closed.

  Thereafter, when the car door is closed and the car door switch GS and the landing door switches DS-T, DS-N, and DS-B are turned on, the door open / close detection relays 41G and 41D are excited as described above, and a The contacts 41Ga and 41Da are closed.

  That is, as shown in FIGS. 4 and 29, even when the car door is opened due to some abnormality during the running of the car and the open door is detected and the rope brake is activated, the car door is closed after that, Since the door contacts 41Ga and 41Da of the door opening / closing detection relay shown in FIG. 5 and the door contact DCKb of the door opening / closing detection relay all return to the closed state, the safety is confirmed, and the rope brake starting relay PF is normally excited. It is possible to return to the time operation.

  On the other hand, in the door closing check circuit 20 shown in the first embodiment, when the car is running, the landing door is opened due to some abnormality, and the door opening is detected and the rope brake is activated. Even if the rope brake start relay PF is energized after closing and confirming safety, the normal operation cannot be restored.

  Hereinafter, the operation when the landing door is opened and then closed in the door closing check circuit 20 will be described with reference to the sequence diagram of FIG. 30 together with FIG. 4 and 30, after the a contacts 41Ga and 41Da are closed, when the landing door is opened and any of the landing door switches DS-T, DS-N, DS-B is turned off, the door open / close detection relay 41D Is de-energized and the a contact 41Da is opened.

  At this time, since the a contact 41Ga remains closed, the b contacts 41Gb and 41Db are not closed, and the door opening / closing detection relay DCK is not excited. Therefore, even if the landing door is subsequently closed, the door opening / closing detection relay 41D is not excited and the a contact 41Da is not closed.

  That is, from FIG. 4 and FIG. 30, when the landing door is opened due to some abnormality while the car is running and the door brake is detected and the rope brake is activated, even if the landing door is subsequently closed, FIG. The a-contacts 41Ga and 41Da of the door opening / closing detection relay shown and the b-contact DCKb of the door opening / closing detection relay do not all return to the closed state. It cannot be restored to normal operation.

  In the door closing check circuit 20 shown in the first embodiment, as described above, even when the car door is opened while the car is running and the door open running is detected and the rope brake is activated. After that, the car door is closed, safety is confirmed, and the rope brake start relay PF is energized, so that the normal operation can be restored, the landing door opens, the door open running is detected, and the rope brake If it is activated, the landing door is then closed, safety is confirmed, and the rope brake start relay PF is excited to return to normal operation.

  However, like the door closing check circuit 20A shown in FIG. 31, the car door switch GS, the landing door switches DS-T, DS-N, DS-B, the door opening / closing detection relays 41G, 41D, and the door opening / closing detection relay a Consider replacing the contacts 41Ga and 41Da and the door contacts 41Gb and 41Db of the door opening / closing detection relay with respect to the door closing check circuit 20.

  In this case, contrary to the door closing check circuit 20, even when the landing door is opened during the traveling of the car and the door opening traveling is detected and the rope brake is activated, the landing door is then closed. After confirming safety and energizing the rope brake start relay PF, the normal operation can be restored. When the car door is opened and the open door is detected and the rope brake is activated, Even if the car door is closed, the safety is confirmed, and the rope brake start relay PF is excited, the normal operation cannot be restored.

Claims (8)

An elevator control circuit that detects that a car has traveled with at least one of a car door and a landing door open,
A first door zone relay that is energized when the car is in an upper door zone including a landing position of the car;
A second door zone relay that is energized when the car is in a lower door zone including a landing position of the car;
A third door zone relay that is energized when the first door zone relay and the second door zone relay are de-energized;
A door zone check circuit having:
A car door relay energized when the car door is closed;
A landing door relay energized when all the landing doors are closed;
A door check relay that is excited when the car door relay and the landing door relay are de-energized;
A door closing check circuit,
At least one of the first door zone relay and the second door zone relay is de-energized, or the third door zone relay is energized, and at least one of the car door relay and the landing door relay is de-energized Or a door open travel detection relay that is de-energized when the door check relay is energized, and the car door and the landing when the door open travel detection relay is de-energized. A door open running detection circuit for detecting that the car has run with at least one of the doors open;
Elevator control circuit with The elevator control circuit according to claim 1, further comprising: a rope brake operation circuit having a rope brake release relay that is de-energized when the door-open travel detection relay is de-energized and activates the rope brake of the elevator. . The door opening traveling detection relay ON failure check circuit further comprising a rope brake starting relay that is de-energized when the door opening traveling detection relay is ON failure and does not start the elevator rope brake. The elevator control circuit according to claim 2. Even if only the car door relay is de-energized and the rope brake is activated, the door closing check circuit is activated when the car door relay is energized and the rope brake start relay is energized. The elevator control circuit according to claim 3, wherein a travel detection relay is excited and the rope brake is released. The door closing check circuit is configured such that only the landing door relay is de-energized and the landing door relay is excited and the rope brake start relay is excited even when the rope brake is activated. The elevator control circuit according to claim 3, wherein a travel detection relay is excited and the rope brake is released. The door open travel detection circuit detects a failure state of components of the door zone check circuit based on the open / closed state of the contacts of the first door zone relay, the second door zone relay, and the third door zone relay. The elevator control circuit according to any one of claims 1 to 5. The door open travel detection circuit detects a failure state of components of the door close check circuit based on an open / close state of contacts of the car door relay, the landing door relay, and the door check relay. The elevator control circuit according to any one of the above. The door open travel detection circuit maintains a state in which the door open travel detection relay is de-energized when the door open travel detection relay is de-energized. The elevator control circuit according to item 1.

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