1. SPECIAL PROBLEM FOR ATTENTION IN USE 2. CONNECTING WAYS AND ELECTRICAL DRAWING 3. PARTS OF THE OPERATING MACHINE 4 SPECIFIC PROCEDURES FOR ADJUSTING THE DOOR MACHINE 5. TABLE OF FUNCTIONAL PARAMETERS 6. PARAMETER INSTRUCTIONS
SPECIAL PROBLEM FOR ATTENTION IN USE
◆ Please use the permitted range of the surrounding temperature When the temperature is －10℃~ 50℃ and the humidity is below 90% there is no dew
The lifespan of a lift door controller is significantly affected by the surrounding temperature, so it is essential to operate within the manufacturer's recommended temperature range Proper installation, including careful attention to the direction and environment, is crucial to ensure optimal performance and longevity of the controller.
Applying power voltage directly to the lift door controller's output terminal can cause severe damage to the controller Additionally, connecting power voltage to the U, V, and W output terminals may also result in controller failure To prevent such issues, it is crucial to carefully check all connections and ensure proper operation procedures are followed during installation and maintenance Proper electrical setup is essential for the safety and longevity of lift door control systems.
◆Exerting the power voltage, please do not exceed the permitted voltage
To ensure safety, avoid touching the inside controller of the lift door during operation due to high voltage risks Always disconnect the lift’s power supply and wait at least five minutes before performing any inspections or maintenance Additionally, be cautious around the radiating fin, which becomes extremely hot during operation; do not touch it to prevent burns or injuries.
Elevator door controllers emit high-frequency harmonic waves that can interfere with nearby communication devices such as AM radios This electromagnetic interaction depends on the strength of the electric wave, making it difficult to completely eliminate.
Adjusting the radio's directional settings, installing noise filters within metal enclosures, and utilizing wire pipes are effective strategies to reduce electromagnetic interference; for detailed guidance, please consult our specific instructions.
When measuring insulation resistance, do not perform tests between wires Always disconnect the lift door controller before measuring resistance between the power wire and the electromotor wire to ensure accurate results Additionally, avoid using an ohmmeter to test the control circuit directly to prevent damage or inaccurate readings.
To ensure proper operation and avoid damage, do not use the power or load terminals of the electromagnetism contactor to start or stop the electric motor controlling the lift door Frequent switching on the power terminal can interfere with the lift door’s controller, causing operational issues Similarly, repeatedly activating the load terminal while the lift door’s controller is in operation may cause it to unexpectedly disengage the brake Instead, use the dedicated operation signal from the lift door’s controller switch to start and stop the motor, ensuring safe and reliable functionality.
Avoid installing phase modulation condensers or surge arresters on the input terminal of the lift door controller, as this can interfere with the controller's operation or cause damage to the condenser If such components are connected, they should be removed immediately to ensure proper functioning and safety of the lift system.
◆Please do not use the load except that of three-phase induction motor and permanent magnet synchronous motor
Proper protection of the lift door’s controller is essential, as it features multiple functions such as restricting built-in electric current and passing current protection These protective features are designed to prevent damage to the controller during abnormal conditions, not for regular operation Therefore, users should avoid activating these functions during normal use, as improper use can shorten the controller's lifespan or cause damage.
◆Please confirm that all points for attention in the service manual and the specification of goods are out of question when you use it.
CONNECTING WAYS AND ELECTRICAL DRAWING
Ensure the power is turned off before connecting any lines, waiting more than 5 minutes after power disconnection to prevent electrical hazards Always connect the ground wire to avoid electric shock, fire, and injury Trust a professional electrician to handle the wiring to ensure safety and compliance Only reconnect wires after completing the installation process to prevent electric shocks and injuries.
Ensure proper wiring of the motor by correctly connecting the U, V, and W terminals, and avoid connecting the alternating-current power directly across these terminals to prevent injury and fire hazards Verify that the power supply voltage matches the rated voltage to ensure safe operation and prevent electrical accidents Use appropriate tools to securely fasten terminal screws, reducing the risk of fire caused by loose connections Always perform wiring checks before operating the door controller, as incorrect wiring can cause malfunction and safety issues.
Please ensure correct wiring connections to avoid damaging the device; input the power wire to the ends of L and N, and connect the motor to the ends of U, V, and W Use round, firm terminals with sleeves for both power and motor connections Confirm that all connections are secure after completing the main electrical circuit to prevent issues with the control circuit caused by loose wiring When connecting to a large-scale power transformer, always install a choke coil at the lift door controller's output terminal to enhance the power factor and ensure optimal performance.
Connection Fig of the door machine
Internal connection figure of the controller
CANH &CANL：CAN bus’s positive and negative ends
PA、PB、PZ： Signal terminal of phase A, B and C of the encoder GNDA：+15V common terminal of power
GNDE: +24V common terminal of power
OP&CL：Signal terminal of opening and closing the door
OPI& CLI：Signal terminal of putting the open and closed door in place
DECO&DECC：Speed-reducing signal terminal of opening and closing the door (the use of the door controller without the encoder)
ENI：Functional terminal of operating and fire protection
Y0-1&Y0-2：Multi-function output Y0 and its common terminal (relay output, load capacity: 3A/24V DC)
Y1-1&Y1-2：Multi-function output Y1 and its common terminal (relay output, load capacity: 3A/24V DC)
CLO&CMC：The output of putting the closed door in place and its common terminal (relay output, load capacity: 8A/24V DC)
OPO&CMO：The output of putting the open door in place and it common terminal (relay output, load capacity:
Terminal Function Corresponding terminal in elevator system
OP Door-open signal CJ8:4
CL Door-close signal CJ8:5
GNDE Com of input CJ8:3
CM0, CMC Com of limit output CJ8:2
OPO Output of open limit CJ8:1
CLO Output of close limit reserved
PARTS OF THE OPERATING MACHINE
3.1 View and each part’s name of the operating machine
3.2 Detailed function of each part
LCD liquid crystal display: Displaying data and function
The functional light (FUN) feature allows users to modify machine parameters by navigating the main menu When the LED indicator is lit, the machine is in parameter adjustment mode, with the cursor positioned at the parameter's order number Users can press the “increase” and “decrease” buttons to change the order number within the main menu Pressing the “functional button” switches between different functions, such as the light and data light modes, enabling precise control over machine settings.
When the device is in Data Light (DATA) mode, users can modify parameter data or subsidiary menu settings while the machine is operating The cursor should be positioned at the specific parameter order number or data you wish to change Adjustments to the parameter order or data can be made by pressing the "increase" and "decrease" buttons Pressing the functional button toggles between lighting the main light and the functional light (FUN), providing easy control during operation.
Running light（RUN） ：When the door controller is in operation, the light will flash (flashing frequency is
Functional key : Alternately select the operation of modifying parameter main menu or modifying parameter subsidiary menu or parameter data.
Shift-right key : When under the status of parameter subsidiary menu, pressing the key once can make single-place shift-right of the cursor
Shift-left key : When under the status of parameter subsidiary menu, pressing the key once can make single-place shift-left of the cursor
Pressing the key increases the order number of parameters in the main menu, subsidiary menu, or the value of specific data, with the exact increase depending on the cursor position When inspecting and repairing open or closed doors, selecting the main menu F02 and activating the data light allows the user to perform door examination and repair Additionally, pressing the key during this process initiates the door machine's inspection and repair of open doors.
Pressing the decrease key reduces the order number of the main menu or subsidiary menu parameters, or decreases the parameter data value, depending on the cursor position During inspection and repair of open and closed doors—such as selecting the F02 main menu and activating the data light—pressing the key initiates the door machine to examine and repair open doors effectively.
The confirmation key allows you to store modified data; once a parameter is adjusted, the data will flash to indicate the change has been made Pressing the key again will stop the flashing, confirming that the parameter data has been saved Additionally, the confirmation key can be used to initiate various operations, such as measuring the width of a door, making it a essential control function for precise measurements.
3.3 Form instruction of the menu parameter
The following is the form instruction of the menu Parameter F0701
The unit of the Parameter (some Parameters do not have unit) Data of Parameter （2.5）
The order number of subsidiary menu of the Parameter The order number of main menu of the Parameter
In liquid crystal systems, Parameters marked with the "#" symbol in the third line of the menu are designated as protective Parameters These parameters are set prior to the door machine’s dispatch from the factory and are crucial for system stability Modifying these protective parameters can lead to system instability and should only be adjusted by qualified technicians. -Protect your door system’s stability by mastering factory-set Parameters with expert precision—[Learn more](https://pollinations.ai/redirect/claude)
Parameters can only be modified when the correct password 1 and system password are entered, and F1207 is set to 1 Additionally, parameters without the “#” character can only be changed after F1207 is configured to 1, ensuring secure and controlled system adjustments. -Secure your system tweaks effortlessly—get expert SEO-proof content that keeps your tech parameters crystal clear! [Learn more](https://pollinations.ai/redirect/claude)
3.4 Parameter instruction of the display screen
The following is liquid crystal display instruction of menu parameter F0
3.5 Operation examples of the operating machine
Example: adjust the starting speed 1（F0701）of closing door from 2.5HZ to 3.0HZ display
The cursor's position determines the display indicators: when placed in the main menu position, the “FUN” light illuminates, indicating functional mode; when moved to other positions, the “DATA” light will turn on, signifying data mode It is important that only numerical values at the cursor's location can be modified, ensuring accurate operation and user control within the device Understanding these indicator lights helps users navigate between functional settings and data adjustments effectively Proper navigation between these modes enhances device usability and ensures precise configuration.
2 When F1207 is changed into 00001, the data can be modified only
When working with EEPROM, it's important to consider the time limitations for cleaning and writing data Instead of immediately storing modified parameters, perform a trial operation first to observe if the changes are appropriate If the parameters are deemed unsuitable, modify them and repeat the trial process Only store the data once the parameters are confirmed to be correct, which helps reduce the number of EEPROM cleaning and writing cycles, enhancing the device's lifespan and performance.
4 Specific procedures for adjusting the door machine
Before adjusting the door machine, ensure that the motor's U, V, W connections are correct, and the encoder’s direction (F1210) is properly settled, both of which are verified before factory dispatch Verify that the controller has been initialized to the appropriate control mode—such as vector control for 16-polar permanent magnet synchronous motors, vector control for 6-pole asynchronous motors, or V/F control for 6-pole open-loop motors—also confirmed prior to shipping Additionally, confirm that the magnetic pole position measurement of the permanent magnet synchronous motor has been completed, which is essential for door machines powered by permanent magnet synchronous motors.
Ensure all necessary operations are completed before dispatching the door machine from the factory, as unfinished steps can cause operational issues If the required procedures are not finished, the door machine may not operate correctly or may function abnormally Debugging can only be performed after these preliminary operations are finalized, ensuring the equipment functions properly and troubleshooting is effective.
Before dispatching from the factory, all parameters must be finalized, as they cannot be altered afterward However, if the correct password (F0103) or system password (F0104) is entered, these settings can be modified post-dispatch Ensuring parameters are settled beforehand guarantees proper device functioning and security.
The pulse settlement of the encoder must match that of the encoder used in the application In our company's door operations, the permanent magnet synchronous motor utilizes an encoder with 2048 pulses per revolution, ensuring precise position feedback In contrast, the asynchronous motor employs an encoder with 512 pulses per revolution, suitable for its operational requirements Proper alignment of pulse counts between the encoder and the motor is essential for accurate and reliable door control performance.
(2) Whether the direction settlement of motor and encoder is right or not
(3) Whether the data settlement of magnetic pole’s position is right or not
Assess whether the parameter settings for the synchronous door—where the elevator hall door edges and car door edges align during opening and closing—are correct, and verify the accuracy of the asynchronous door (F1201) configuration to ensure proper operation and safety compliance.
When inspecting the automatic detection parameter, ensure the RF1233 settlement is correct Set the parameter to zero for synchronous door operation and to three for asynchronous door operation Proper configuration of these parameters guarantees accurate system performance.
(6) Examine the settlement of U-phase zero current parameter（F1104）and V-phase zero current parameter
（F1105）is right or not When there is no current passing through the motor, (look over F0109 when
TABLE OF FUNCTIONAL PARAMETERS
Function Paramete r Parameter name Factory setting Record Unit
F0102 Display of angle θ of synchronous motor °
F0106 Display of Z-phase status of encoder
F0107 Tested zero offset value of current
F0108 Zero offset value of current
F0109 Display of running status of the motor
Used for display, see parameter instructions for details
F02 Opening of repairing switch Opening of repairing, opening position, opening and closing time and status display
F0301 Display of input status of OP terminal
F0302 Display of input status of CL terminal
F0303 Display of input status of
OPI terminal F0304 Display of input status of CLI terminal F0305 Display of input status of
DECO terminal F0306 Display of input status of
DECC terminal F0307 Display of input status of
The ENI terminal provides essential system status updates, including the write-protect status of hardware (F0308), which indicates if the hardware is protected against modifications It also displays critical positional information such as the opening limit position (F0309), closing limit position (F0310), opening slowing down position (F0311), and closing slowing down position (F0312), ensuring precise control and monitoring of hardware operations These features are vital for maintaining operational safety and efficiency, making the ENI terminal an indispensable component for system management.
Input display, see parameter instructions for details
This article highlights key protection and status displays essential for optimal system operation It covers the display of closing limit protection (F0314), acceleration and deceleration indicators (F0315, F0316), and the status of start and limit relays (F0401–F0403) Additionally, it includes output status displays for relays Y0 and Y1 (F0404, F0405), motor output status, and the Z-phase position of the encoder (F0406, F0407) The system also provides visual indications of the closing stop position (F0408) and the counter at door position (F0409), ensuring comprehensive monitoring and enhanced operational safety.
F0410 Time display of opening and closing the door
Output display, see parameter instructions for details
F0501 Opening and closing current display F0502 Display of direct-current bus voltage
Display of current and voltage
Display of current and voltage, see parameter instructions for details
F0601 Record of last fault F0602 IPM fault frequency F0603 Over-current fault frequency F0604 Fault frequency when opening beyond setting time
F0605 Fault frequency when closing beyond setting time
Fault display, see parameter instructions for details
F0703 Allowable error frequency in stable speed
F0704 Opening speed of synchronous retractable cam
F0711 Self-study and running speed with electricity
F0712 Remaining speed in opening limit position
F0713 Remaining speed in closing limit position
F0714 Running speed when started in low spewed area
F0715 Running speed of synchronous motor with electricity
F0716 Allowable error frequency in speeding up and slowing down
F0805 Stop-protection time in opening
F0806 Stop-protection time in closing
F0807 Off time of motor in IPM fault2.0 2.0 S
F0808 Allowable fault frequency per minute
F0809 Deceleration time in emergency stop of the door
F0810 Delaying time in door reversing
F0811 Remaining time of controlling torque
F0812 Filtering time of tested current 6 6 us
F0813 Total time of opening and closing in test running
F0814 Allowable over-current time in closing
F0815 Allowable over-current time in opening and closing
F0816 Over-current relay time in closing
F0817 Delayed off time of LCD negative light
F0819 Allowable running time of opening and closing
F0820 Off time of over-current motor 5.0 5.0 S
F0821 Filtering time of given speed 6 6 ms
F0822 Filtering time of tested peed 3 3 ms
F0901 Slowing down distance in opening
F0902 Slowing down distance in closing
F0905 Running distance of unlocking speed
F0906 Running distance of start speed in closing
F0907 Limit distance of safety plate 100 100
F0909 Distance in opening low- speed area
F0910 Distance in closing low- speed area
F0912 Deceleration speed when synchronous retractable cam opens
F0913 Deceleration speed in low-speed area in opening
F0914 Deceleration speed in low-speed area in closing
F0915 Over-current tested distance in closing
F0916 Limit protection position in opening
F0917 Limit protection position in closing
F0918 Deceleration position of opening low-speed 1
F0919 Deceleration position of opening low-speed 1
F1005 Voltage when synchronous motor is started
F1006 Maximum voltage of torque loop 66 66 V
F1007 Maximum voltage of exciting loop 50 50 V
Torque, current and voltage setting of the motor
F1008 Closing overload current in 0.93 0.93 A stable running F1009 Overload protection current in opening and closing 3.00 3.00 A
F1010 Closing overload current in acceleration and deceleration
F1102 Reduced value of over-current current
F1104 U-phase zero current offset of current sensor
F1105 V-phase zero current offset of current sensor
F1106 Current proportion of current sensor
F1113 Time constant of the motor
F1115 Polarity position of synchronous motor
Parameter settings of the motor
F1116 Pulse number per turn of encoder
F1201 Option setting of synchronous door
F1203 Test running setting of the door
F1204 Self-test setting of door-width 0 0
F1206 Testing operation of polarity position
F1208 Opening braking timing/long- term braking Option
F1209 Opening braking timing/long- term braking option
F1211 Overload reversed opening setting in closing
F1213 Whether option setting of encoder is used
F1214 Polarity setting of opening limit output relay
F1215 Polarity setting of closing limit output relay
F1216 Polarity setting of multi- function relay Y0
F1217 Polarity setting of multi- function relay Y1
F1218 Polarity setting of opening limit switch
F1219 Polarity setting of closing limit switch
F1220 Polarity setting of opening limit switch
F1221 Polarity setting of closing deceleration switch
F1225 Option of input signal terminal in opening
F1226 Option of input signal terminal in closing
F1227 Option of opening limit input signal terminal
F1228 Option of closing limit input signal terminal
F1229 Option of opening deceleration input signal terminal
F1230 Option of closing deceleration input signal terminal
F1231 Option of Fire protection input signal terminal
F1233 Self-test stop position setting in closing
PARAMETER INSTRUCTIONS
This parameter indicates both the controller's set speed and the motor's actual operating (tested) speed When an encoder is absent, the tested speed registers as zero The setting speed (R) and the tested speed (D) are measured in Hertz (Hz), providing crucial data for motor performance analysis and control accuracy.
This parameter displays electrical angle of permanent magnetic synchronous motor When controlling asynchronous motor, this parameter is zero
This parameter is to input code 1 Press after code input, and if it is correct input, last column of liquid crystal of this parameter (menu) displays “PW01： ***** ERROR＂becoming
ERROR," signaling that the code must be re-entered This code can be revised in menu F1232 for future adjustments.
The factory sets an unchangeable initial code used to initialize parameters after installing control software Password 1 is not configured during this process; for input operations, refer to F1232 Additionally, F0105 is responsible for reading input code 1, ensuring proper system setup.
When code 1 or system password is passed, press , and password 1 data will be displayed
The Z-phase position of the encoder is indicated by this parameter When a Z-phase pulse is present, a “■” symbol appears after “S:” Additionally, the electric angle of the permanent magnetic synchronous motor is shown following the “D:” parameter, and the same angle is displayed after the “R:” parameter when the encoder outputs a Z-phase pulse.
F0107 (zero offset value of tested current):
This parameter shows the current sensor's reading when there is no current in the tested controller Specifically, the U-phase zero current offset appears after “IU0:”, while the V-phase zero current offset is displayed after “IV0:”.
F0108 (zero offset value of current):
This parameter indicates the zero current offset of the tested current The U-phase zero current offset is displayed after "IU0:", while the V-phase zero current offset appears after "IV0:".
This parameter indicates the operational status of the motor When the motor is running, the last column in the menu displays "MOTOR：■ RUN"; otherwise, it shows "MOTOR：_ STOP." If there are no input opening or closing signals, the parameter can shut down the motor output by following the specified procedures.
② Press and make “DATA” light on
③ Press and shut current output
This parameter is used for operation of repairing opening and closing by following procedures:
② Press and make “DATA” light on.
③ Press and make door open And press and make door closed.
This parameter can also display position of door (data behind “P:” will be 0 when the door is at closing limit), opening and closing time of the door (data behind “T :”)
F0301 (input display of OP terminal)
When the terminal is short connected to GNDE terminal, [ON] will be displayed, or else [OFF] F0302 (input display of CL terminal)
When the terminal is short connected to GNDE terminal, [ON] will be displayed, or else [OFF] F0303 (input display of OPI terminal)
When the terminal is short connected to GNDE terminal, [ON] will be displayed, or else [OFF] F0304 (input display of CLI terminal)
When the terminal is short connected to GNDE terminal, [ON] will be displayed, or else [OFF] F0305 (input display of DECO terminal)
When the terminal is short connected to GNDE terminal, [ON] will be displayed, or else [OFF] F0306 (input display of DECC terminal)
When the terminal is short connected to GNDE terminal, [ON] will be displayed, or else [OFF] F0307 (input display of ENI terminal)
When the terminal is short connected to GNDE terminal, [ON] will be displayed, or else [OFF] F0308 (display of write-protection of hardware)
The controller's control plate features a hardware write-protection switch, which is the second digit of the 4-digit code switch When set to the OFF position, it displays [OFF], allowing parameter modifications; when in the ON position, it displays [ON], preventing any parameter revisions.
F0309 (Display of opening limit position)
Ensure the door is correctly set at the opening limit position with F1227 and positive setting F1218 selected; if so, [ON] will be displayed, otherwise [OFF] The parameter must be [ON] when the door is at the opening position to prevent abnormal operation; if issues occur, verify the connection, terminal options, and positive setting of the opening limit switch Proper configuration of these settings is essential for smooth and正常运行 of the system.
F03010 (Display of closing limit position)
When the door reaches its correct closing limit position with the proper settings (F1228 and positive setting F1219) selected, the display will show [ON]; otherwise, it will show [OFF] It is essential that the parameter is [ON] when the door is at the closing position to ensure smooth operation If the status is not [ON], it may lead to abnormal running, so verify the connections, terminal options, and the positive setting of the opening limit switch Properly configuring these settings is crucial for optimal door performance and safety.
F0311 (Display of opening deceleration position)
When opening the deceleration switch without using the encoder system, ensure that the correct settings are selected with F1229 and a positive setting for F1220, as this will display [ON]; otherwise, [OFF] will be shown If the deceleration switch is activated, the parameter must be set to [ON] to prevent abnormal operation; otherwise, issues with running, connections, terminal options, or the positive setting of the opening limit switch should be checked.
F0312 (Display of closing deceleration position)
When the deceleration switch is closed and correctly set (with F1229 and positive setting F1220 selected, without using the encoder system), the display will show [ON]; otherwise, it will show [OFF] Ensuring the deceleration switch is properly closed and the parameter is set to [ON] is crucial for normal operation; otherwise, the system may run abnormally Additionally, it is important to verify connections, terminal options, and the positive setting of the opening limit switch to prevent operational issues.
F0313 (display of opening limit protection)
When data of counter at the door is larger than that of F0916, [ON] will be displayed, or else
[OFF] When opening limit switch is invalid, the parameter is used for opening limit protection (when it is [ON], the door is at opening limit position)
F0314 (display of closing limit protection)
If the door counter data is smaller than that of F0917, the display will show [ON]; otherwise, it will show [OFF] The closing limit switch's status determines the door’s position—if invalid, the parameter provides opening limit protection When the parameter indicates [ON], it confirms that the door is at the closing limit position, ensuring safe and accurate door operation.
This parameter indicates whether the door is currently in acceleration mode When the door is accelerating, the last column of the liquid crystal display for this parameter (menu) shows "STATUS: ■ [ON]." If the door is not in acceleration, this display will indicate otherwise.
This parameter indicates whether the door is currently in deceleration mode When the door is decelerating, the last column of the liquid crystal display menu will show “STATUS：■ [ON]” Conversely, if the door is not in deceleration, this indicator will be absent or show a different status Monitoring this parameter helps ensure safe and efficient door operation by confirming its deceleration status in real-time.
F0401 (status display of started relay)”
When started relay of controller is active, last column of liquid crystal of this parameter (menu) will display “STATUS：■ [ON]”, or else “ STATUS：[OFF]”
F0402 (status display of opening limit relay)”
When opening limit relay is active, last column of liquid crystal of this parameter (menu) will display
“STATUS：■ [ON]”, or else “STATUS： [OFF]”
F0403 (status display of closing limit relay)”
When closing limit relay is active, last column of liquid crystal of this parameter (menu) will display “STATUS：■ [ON]”, or else “STATUS：_ [OFF]”
When relay Y0 is active, last column of liquid crystal of this parameter (menu) will display “STATUS：■ [ON]”, or else “ STATUS：_ [OFF]”
When relay Y1 is active, last column of liquid crystal of this parameter (menu) will display “STATUS：■ [ON]”, or else “ STATUS：_ [OFF]”
F0406 (status display of current output)”
When there is current through the motor, last column of liquid crystal of this parameter (menu) will display “STATUS：■ [ON]”, or else “STATUS：_ [OFF]”
F0407 (Z-phase position display of encoder)”
When there is pulse on Z-phase of the encoder, last column of liquid crystal of this parameter (menu) will display “STATUS：■ [ON]”, or else “STATUS：_ [OFF]”
F0408 (display of closing stop position)
Data behind “POSITION：” of this parameter displays data of counter at the door position when stopping at the closing stop position
F0409 (Counter display at the door position)