The maintenance keypad is an important interface used for parameter settings, system monitoring, floor-height measurement, and other service functions on HITACHI elevator systems.

Understanding the basic keypad structure and the purpose of each key can help elevator maintenance personnel work more efficiently during inspection, commissioning, and troubleshooting.

HITACHI Elevator Keypad Structure

The HITACHI elevator keypad consists of 16 independent keys. The keypad provides hexadecimal input from 0 to F, allowing technicians to enter addresses and data used by the elevator control system.

The 8–F hexadecimal characters are accessed using the SHIFT key. When the SHIFT key is pressed together with the corresponding numeric key, the display changes to the required hexadecimal character.

The main keys and their functions are summarized below.

What Is the SHIFT Key Used For?

The SHIFT key is mainly used to access secondary functions on the keypad.

Because the keypad supports hexadecimal input, the SHIFT key allows the technician to enter the hexadecimal characters 8, 9, A, B, C, D, E, and F.

This function is particularly useful when entering addresses or data values in the elevator control system.

INC and DEC Keys

The INC and DEC keys are used to adjust the displayed address or data value.

• · INC: Increase the current value
• · DEC: Decrease the current value

These keys make it easier to move through different addresses or adjust the selected data during maintenance and system inspection.

A/D Key

The A/D key is used to switch between Address and Data.

This distinction is important when technicians are checking or modifying elevator control parameters. The address identifies the specific item being accessed, while the data represents the corresponding value.

SET and RESET Keys

The SET and RESET keys are used for confirming or resetting operations within the selected service mode.

Their specific function can vary depending on the mode currently selected through the keypad.

Technicians should therefore confirm the applicable operating procedure for the specific HITACHI elevator control system before changing settings.

MODE Key

The MODE key is used to select different operating or service modes.

Depending on the elevator control system, different modes may provide access to functions such as system monitoring, parameter settings, inspection, or floor-height measurement.

START Key

The START key is associated with the floor-height measurement process.

When the elevator system is prepared for floor-height measurement according to the applicable commissioning procedure, the START key can be used to initiate the measurement process.

Door Open/Close Stop Function

The dedicated door-operation stop function is used to disable the opening and closing operation of the elevator doors during applicable maintenance or service procedures.

This function should only be used by qualified elevator maintenance personnel and under appropriate safety conditions.

Why Understanding the Keypad Matters

The HITACHI elevator keypad provides a direct interface with the elevator control system. Knowing the basic function of each key helps technicians identify the correct operation when performing maintenance or system commissioning.

In particular, understanding the relationship between MODE, A/D, INC, DEC, SET, RESET, and SHIFT makes it easier to navigate the keypad and access the required service functions.

However, keypad operation can vary between different HITACHI elevator control systems. The specific service manual and applicable maintenance procedures should always take priority when performing parameter changes or commissioning work.

Conclusion

The HITACHI elevator maintenance keypad is designed to provide technicians with convenient access to elevator system settings and service functions. Its 16-key structure supports hexadecimal input, while dedicated keys such as SHIFT, A/D, MODE, SET, RESET, INC, DEC, and START provide access to different maintenance operations.

A clear understanding of these basic functions can improve maintenance efficiency and help technicians work more accurately when inspecting, commissioning, or troubleshooting HITACHI elevator systems.

For HITACHI elevator parts, control boards, displays, door system components, encoders, and other replacement parts, YuanQi provides elevator spare parts sourcing and technical support for maintenance and modernization projects.

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