Elevator Dot matrix outbound call display PCB Board Step SM-04-VSB SM-04-VSC SM-04-VSD Elevator communication panel
SM-04-VSB SM-04-VSC SM-04-VSD outcall display board, commonly used in the STEP elevator system. It is part of the standard/special protocol elevator accessories, and its main functions are to display the floor, connect the outcall button and button light, and connect the elevator lock switch and other signals.
Main functions
Display floor: Display the current floor of the elevator.
Connect the outcall button: Receive and process the signal from the outcall button.
Connect the elevator lock switch: Control the locking and unlocking of the elevator.
Technical specifications
Model: SM-04-VSB SM-04-VSC SM-04-VSD
Scope of application: STEP elevator system.
Protocol: Standard/special protocol.
Common problems and solutions
Communication line interference: If the communication line does not use twisted pair, it may cause interference to the communication line. The solution is to use twisted pair communication line, and the twist pitch should be less than or equal to 35mm as much as possible.
Terminal resistance jumper error: Terminal resistance jumper error may cause unstable communication. The terminal resistance must be jumpered on the 04 board at the bottom, the terminal resistance must be jumpered on the 02 board in the car, and the terminal resistance of other 04 boards cannot be jumpered.
There is no separate wiring trough for high-voltage wires and communication wires: This may cause communication interference. The solution is to separate the wiring trough for high-voltage wires and communication wires.
The 04 board on a certain floor is damaged: The damage of the 04 board on a certain floor may cause abnormal communication voltage. The solution is to find out the 04 board on that floor and replace it.
The communication line is short-circuited to the ground: The communication line is short-circuited to the ground, which may cause communication problems. The solution is to check the communication line to ensure that no line is short-circuited to the ground.
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