OC fault reset device of elevator absolute value encoder

Abstract

The utility model discloses an OC fault reset device of an absolute value encoder of an elevator, which comprises an absolute value encoder safety box, an elevator car roof plug-in board, an elevator control cabinet and an elevator control mainboard arranged in the elevator control cabinet, and an ascending button, a descending button and an operation button are arranged on the elevator control cabinet. A CAN communication line of the absolute value encoder safety box is in communication connection with the elevator control mainboard, the elevator control mainboard is provided with an elevator safety OC detection loop and a maintenance emergency electric loop, and the elevator control mainboard transmits a fault reset command to the absolute value encoder safety box through the CAN communication line. And the absolute value encoder safety box is reset and an elevator safety OC detection loop is switched on. The fault reset device is simple in configuration and low in cost, and prevents misoperation of workers during fault reset.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator control, in particular to an OC fault resetting device for an elevator absolute value encoder. Background Art

[0002] In the prior art, the absolute encoder system can directly measure the position of the car in the shaft and provide real-time feedback to the control system. Complete leveling adjustment can be achieved without the help of other switches. The shaft switch position and floor position can be set by software, without self-learning, and there will be no staggered floor problem. The shaft deceleration switch, leveling switch, door zone switch and corresponding mounting brackets and cables are omitted, saving the corresponding raw materials and reducing the installation time. At the same time, the device integrates multiple safety functions such as door lock short circuit detection, car accidental movement protection, overspeed protection, etc., which reduces the failure rate between functions and improves the reliability of the system. It has now been widely promoted and used.

[0003] During the commissioning and maintenance of the elevator, if the system detects that the elevator has crossed floors, moved unexpectedly, or exceeded speed during some elevator tests, the absolute encoder OC fault will be reported. At this time, the fault detection light of the absolute encoder safety box will also light up, and the elevator express will not be able to run. The elevator express can only run normally after manual reset. There are currently two mainstream methods for resetting the OC fault of the absolute encoder. The first is the key reset method. A reset button is configured in the control cabinet, which is connected to the absolute encoder safety box through an accompanying cable. Press the reset button three times in a row to reset the absolute encoder OC fault, and press it for 10 seconds to clear the shaft data of the safety box. The second is to use the software reset method, which requires selecting the operation through the operator, entering the absolute encoder menu, and then entering the device state conversion, switching the state to the reset command, and then entering the password to confirm the fault reset.

[0004] Among them, in the first key reset method, the control cabinet needs to be equipped with a reset button separately, and the accompanying cable and button are added, thereby increasing the hardware cost. In addition, it is also easy to operate incorrectly during reset. For example, improper operation will clear the shaft data previously learned by the safety box. After the shaft data is cleared, the safety box needs to relearn the position data of each floor before the elevator express can run, which increases the workload. The second software reset method can only be reset through a handheld operator. Each site must be equipped with an operator for operation, and the configuration cost is high. The technical requirements for maintenance personnel are also high, and they need to have a certain understanding of the operating system of the absolute encoder to operate. At the same time, resetting the fault by switching the state of the operator is also prone to misoperation. If the switching state is incorrect, the shaft data of the safety box will also be cleared, which increases the workload.

[0005] In view of the above technical problems arising in the reset operation of the elevator absolute encoder OC fault, it is necessary to develop and design a fault reset device for the absolute encoder with simple configuration, low cost, and easy operation. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model provides an OC fault resetting device for an elevator absolute encoder, which has a simple configuration and low cost and prevents staff from making misoperations when performing fault resetting.

[0007] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0008] An OC fault resetting device for an elevator absolute encoder comprises an absolute encoder safety box, an elevator control cabinet and an elevator control mainboard arranged in the elevator control cabinet, the elevator control cabinet is provided with up, down and run buttons, a CAN communication line of the absolute encoder safety box is connected to the elevator control mainboard for communication, an elevator safety OC detection circuit and an overhaul emergency electric circuit are arranged on the elevator control mainboard, the elevator control mainboard transmits a fault reset command to the absolute encoder safety box through the CAN communication line, the absolute encoder safety box resets the fault and connects the elevator safety OC detection circuit.

[0009] As a further improved technical solution of the utility model, the CAN-H, CAN-L and GND lines in the CAN communication line of the absolute encoder safety box are respectively connected to the TXA2+, TXA2- and 0V interfaces in the JP6 plug-in of the elevator control mainboard through accompanying cables.

[0010] As a further improved technical solution of the utility model, the maintenance emergency electric circuit includes a safety switch SAF, an up button SBTU, a down button SBTD and a common button SBPR, one terminal of the up button SBTU and the down button SBTD are respectively connected to the T1-J03 interface and the T1-J04 interface of the elevator control mainboard, and the other terminals of the up button SBTU and the down button SBTD are simultaneously connected to one terminal of the common button SBPR; the safety switch SAF is a bipolar combination switch, and the safety switch SAF includes a normally closed switch and a normally open switch arranged in double connection, one terminal of the normally closed switch is connected to the T1-J02 interface of the elevator control mainboard, one terminal of the normally open switch and the other terminal of the normally closed switch are connected together to the COM interface of the absolute encoder safety box, and the other terminal of the common button SBPR is connected to the other terminal of the normally open switch.

[0011] As a further improved technical solution of the utility model, the T1-J02 interface of the elevator control mainboard is connected in series with the emergency electric detection light X0, the T1-J03 interface is connected in series with the emergency electric upward detection light X2, the T1-J04 interface is connected in series with the emergency electric downward detection light X3, and the elevator safety OC detection circuit is connected in series with the OC detection light X20.

[0012] As a further improved technical solution of the utility model, the OC door output end of the absolute elevator safety OC detection circuit is connected to the J03 interface in the JP4 plug-in of the elevator control mainboard, and the OC door input end is connected to the J04 interface in the JP4 plug-in of the elevator control mainboard.

[0013] As a further improved technical solution of the utility model, the other end of the J04 interface and the J03 interface in the JP4 plug-in of the elevator control mainboard are connected to the OC door output end and the input end of the elevator safety OC detection circuit.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The elevator control mainboard of the utility model uses a button trigger signal and inputs it to the absolute encoder safety box to perform OC fault reset operation. The communication lines (CAN-H, CAN-L, GND) of the absolute encoder safety box are connected to the elevator mainboard JP6 plug-in (TXA2+, TXA2-, 0V) through the accompanying cable. When the absolute encoder safety box fails, the elevator enters the maintenance mode (emergency electric) and the emergency electric detection light X0 goes out. Press the up, down and common end buttons of the elevator, the emergency electric up detection light X2 and the emergency electric down detection light X3 light up and last for 3S, triggering the fault reset signal. The elevator control mainboard transmits the signal to the absolute encoder safety box to reset the fault of the absolute encoder safety box. The fault reset method of the absolute encoder of the utility model has the following advantages: (1) There is no need to configure a reset button separately, eliminating the wire and reset button of the accompanying cable; (2) Fault reset can be performed without the need for operator operation; (3) It can prevent misoperation during OC fault reset; (4) The utility model greatly reduces the configuration cost and is also easy to operate.

[0016] 2. When the absolute encoder reports an OC fault, the detection point of the elevator safety OC detection circuit is disconnected. By measuring the voltage value in the elevator safety OC detection circuit or checking the detection light of the absolute encoder safety box fault point and the detection light of the OC status, it is determined whether the OC door is disconnected. After confirming that the OC door is disconnected, put the elevator into maintenance mode, press the up, down and common buttons for 3 seconds to trigger the fault reset command, and after the absolute encoder safety box receives the reset command, the emergency electric detection light X0 of the fault point goes out, the detection light X20 of the elevator safety OC detection circuit lights up, and the faults of the elevator control system and the absolute encoder are eliminated. Therefore, the utility model has a simple configuration and low cost, and prevents staff from making misoperations when resetting faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The utility model is a schematic diagram of the connection between the absolute encoder safety box and the elevator control mainboard.

[0019] Figure 2 The utility model is a circuit diagram of an emergency electric circuit for maintenance.

[0020] Figure 3 This is a circuit schematic diagram of the elevator safety OC detection circuit of the utility model.

[0021] Figure 4 This is a flow chart of elevator fault reset of the utility model.

[0022] The reference numerals in the figure are: 1. Absolute encoder safety box; 2. Elevator control main board; 3. OC door. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0024] like Figure 1 and Figure 4As shown, this embodiment discloses an OC fault resetting device for an elevator absolute encoder, including an absolute encoder safety box, an elevator control cabinet, and an elevator control mainboard arranged in the elevator control cabinet. The model of the elevator control mainboard is KLS-MAD-02A. The elevator control cabinet is provided with up, down and run buttons. The CAN communication line of the absolute encoder safety box is connected to the elevator control mainboard for communication. The elevator control mainboard is provided with an elevator safety OC detection circuit and an overhaul emergency electric circuit. The elevator control mainboard transmits a fault reset command to the absolute encoder safety box through the CAN communication line. The absolute encoder safety box resets the fault and connects the elevator safety OC detection circuit.

[0025] In this embodiment, the CAN-H, CAN-L and GND lines in the CAN communication line of the absolute encoder safety box are respectively connected to the TXA2+, TXA2- and 0V interfaces in the JP6 plug-in of the elevator control mainboard through accompanying cables.

[0026] like Figure 2 As shown, the maintenance emergency electric circuit includes a safety switch SAF, an up button SBTU, a down button SBTD and a common button SBPR. One terminal of the up button SBTU and the down button SBTD are respectively connected to the T1-J03 interface and the T1-J04 interface of the elevator control mainboard, and the other terminals of the up button SBTU and the down button SBTD are simultaneously connected to one terminal of the common button SBPR; the safety switch SAF is a bipolar combination switch, and the safety switch SAF includes a normally closed switch and a normally open switch set in double connection. One terminal of the normally closed switch is connected to the T1-J02 interface of the elevator control mainboard, one terminal of the normally open switch and the other terminal of the normally closed switch are connected together to the COM interface of the absolute encoder safety box, and the other terminal of the common button SBPR is connected to the other terminal of the normally open switch.

[0027] The T1-J02 interface of the elevator control mainboard is connected in series with the emergency electric detection light X0, the T1-J03 interface is connected in series with the emergency electric upward detection light X2, the T1-J04 interface is connected in series with the emergency electric downward detection light X3, and the elevator safety OC detection circuit is connected in series with the OC detection light X20.

[0028] like Figure 3 As shown, the OC door output end of the elevator safety OC detection circuit is connected to the J03 interface in the JP4 plug-in of the elevator control mainboard, and the OC door input end is connected to the J04 interface in the JP4 plug-in of the elevator control mainboard.

[0029] The other end of the J04 interface and the J03 interface in the JP4 plug-in of the elevator control mainboard are connected to the OC door output end and input end of the elevator safety OC detection circuit.

[0030] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. An OC fault reset device for an elevator absolute encoder, comprising an absolute encoder safety box, an elevator control cabinet, and an elevator control mainboard arranged in the elevator control cabinet, wherein the elevator control cabinet is provided with up, down and run buttons, characterized in that: The CAN communication line of the absolute encoder safety box is connected to the elevator control mainboard, and the elevator control mainboard is provided with an elevator safety OC detection circuit and an overhaul emergency electric circuit. The elevator control mainboard transmits a fault reset command to the absolute encoder safety box through the CAN communication line, and the absolute encoder safety box resets the fault and connects the elevator safety OC detection circuit.

2. The OC fault resetting device of the elevator absolute encoder according to claim 1, characterized in that: The CAN-H, CAN-L and GND lines in the CAN communication line of the absolute encoder safety box are respectively connected to the TXA2+, TXA2- and 0V interfaces in the JP6 plug-in of the elevator control mainboard through accompanying cables.

3. The OC fault resetting device of the elevator absolute encoder according to claim 1, characterized in that: The maintenance emergency electric circuit includes a safety switch SAF, an up button SBTU, a down button SBTD and a common button SBPR, one terminal of the up button SBTU and the down button SBTD are respectively connected to the T1-J03 interface and the T1-J04 interface of the elevator control mainboard, and the other terminals of the up button SBTU and the down button SBTD are simultaneously connected to one terminal of the common button SBPR; the safety switch SAF is a bipolar combination switch, and the safety switch SAF includes a normally closed switch and a normally open switch arranged in double connection, one terminal of the normally closed switch is connected to the T1-J02 interface of the elevator control mainboard, one terminal of the normally open switch and the other terminal of the normally closed switch are connected together to the COM interface of the absolute encoder safety box, and the other terminal of the common button SBPR is connected to the other terminal of the normally open switch.

4. The OC fault resetting device for an elevator absolute encoder according to claim 3, characterized in that: The T1-J02 interface of the elevator control mainboard is connected in series with the emergency electric detection light X0, the T1-J03 interface is connected in series with the emergency electric upward detection light X2, the T1-J04 interface is connected in series with the emergency electric downward detection light X3, and the elevator safety OC detection circuit is connected in series with the OC detection light X20.

5. The OC fault resetting device for an elevator absolute encoder according to claim 2, characterized in that: The OC door output end of the elevator safety OC detection circuit is connected to the J03 interface in the JP4 plug-in of the elevator control mainboard, and the OC door input end is connected to the J04 interface in the JP4 plug-in of the elevator control mainboard.

6. The OC fault resetting device of the elevator absolute encoder according to claim 2, characterized in that: The other ends of the J04 and J03 interfaces in the JP4 plug-in of the elevator control mainboard are connected to the OC door output and input ends of the elevator safety OC detection circuit.

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