Mitsubishi Elevator Leveling Sensor TSD-1 / TSD-2

TSD-1 and TSD-2 are commonly used in Mitsubishi elevator leveling and re-leveling systems.

Usually installed in the hoistway signal area for:

• floor leveling detection
• door zone monitoring
• re-leveling operation
• position signal feedback

In some older Mitsubishi elevators in Poland and Indonesia, these sensors are still widely used in modernization and maintenance projects because stable leveling signals directly affect floor stopping accuracy.

Common Field Situation

When the sensor becomes unstable, elevators may show:

• inaccurate floor leveling
• repeated re-leveling movement
• door zone signal faults
• abnormal stopping behavior

In maintenance work, technicians sometimes check the sensor gap and vane alignment first before replacing the unit. Mitsubishi hoistway troubleshooting documents also mention PAD/leveling sensor signal verification during diagnosis.

TSD-1 and TSD-2

These models are often grouped together with:

• ZPAD01-001
• ZPAD01-002
• PAD-1
• PAD-2
• PAD-3A

in Mitsubishi maintenance markets.

Different projects may use slightly different sensor structures depending on controller generation and elevator configuration.

Installation Notes

Normally mounted near the hoistway vane detection position.

Before replacement:

• connector type should be checked
• installation distance should match original setup
• sensor alignment should be confirmed carefully

Incorrect installation may affect leveling accuracy during operation.

Maintenance Market

This type of sensor is commonly requested for:

• old Mitsubishi elevator repair
• re-leveling troubleshooting
• modernization projects
• maintenance stock supply

Some buyers also purchase together with:

• vane plates
• leveling magnets
• door zone switches
• hoistway signal components