The LCD59X series (including models such as LCD590-A) is a line of LCD displays designed to operate exclusively in Parallel Mode. These devices receive position and status signals directly from the control panel via dedicated electrical inputs.
1. Menu Access and Default Reset Procedure
Programming the LCD59X display is done using the integrated buttons: SEL (Select) and ENT (Enter).
A. Menu Access
1. From the main operating screen, press the SEL button once.
2. The display will show M1 (Menu 1).
3. Use SEL to scroll through the available menus (M1, M2, M3, etc.), and ENT to access or confirm a value.
B. Default Parameters Reset
To restore all LCD59X parameters to factory default values:
1. Starting from the main screen, press SEL once to display M1.
2. Press and hold the ENT button for approximately 5 seconds until the symbol ME (Memorized Modified) appears on the display.
2. Electrical Specifications and Polarity Management
The LCD59X display requires a power supply of 12/24 Vdc.
Input Polarity (V and Vcom)
Input polarity is physically determined by how the V and Vcom terminals are wired, setting the reference voltage for the inputs:
Configuration | Common Type | Wiring Configuration | Input Activation |
Anode Common | Positive Common | V = Negative (GND), Vcom = Positive (+V) | Inputs activated by connecting them to GND |
Catode Common | Negative Common | V = Positive (+V), Vcom = Negative (GND) | Inputs activated by connecting them to +Vdc |
The Autonomous modes (AO/AC) require DC power supply and do not function with AC power.
3. Working Modes and Floor Addressing
Working Modes (Menù M2)
The Menù M2 (WORKING MODE) selects the signal coding used by the display:
Mode (Display) | Description | Max No. of Floors (Default Range) | Notes |
1P (1 WIRE) | One Pole per Floor | 14 (from to ) | |
B / BN / GR | Binary, Inverted Binary, Gray | 32 (from to ) | |
BC | BCD (Binary Coded Decimal) | 29 (from to ) | |
7S (7 Segments) | 7 Segments encoding | 109 (from to ) | |
AO / AC | Autonomous (Magnetic Sensors NO or NC) | 64 (from to ) | |
DE | Demo | N/A | Simulation mode. |
Lowest Floor Configuration (Menù M4)
The Menù M4 (FIRST FLOOR) is used to set the numeric value of the lowest floor in the system. In coded modes, modifying the value in M4 automatically recalculates all other floor values.
Next Direction Arrows (Menù M9)
The LCD59X series supports the Next Direction Arrow mode, which is active only at the programmed floor.
• The Menù M9 allows setting the numeric floor address (0 for the first floor, 1 for the second, etc.).
• To disable the Next Direction Arrows completely, set the floor address in M9 to 32.
4. Troubleshooting and Additional Functions
Input Reading Time (MA)
To correct issues like the momentary display of an incorrect floor ("ghost floor") in coded modes, the Menù MA (INPUT READING TIME) should be adjusted. The programmed value multiplies a factor of (e.g., equals reading time).
Floor Mapping Adjustment (MC/MD)
The LCD59X allows manual manipulation of the floor sequence:
• MC (Add a Floor): Allows choosing a floor N before which a new floor with the symbol "--" will be added.
• MD (Delete a Floor): Permits deleting a floor from the displayed sequence.
Other Functions
• Stand-by (M3): Sets the automatic switch-off time for the backlight, ranging from 0 (always on) to 99 minutes. Increasing the M3 time can resolve issues related to the display remaining unlit.
• Courtesy Light (M8): Enables/Disables the courtesy light. The light turns on when the display is powered between the LE+ and GND terminals.
• Symbols (M1): Allows assigning a symbol to the currently displayed floor.
• Gong Type (M6): Allows choosing the type of gong (e.g., = Tritonal gongs; = Automatic gong activating Next Direction Arrows).