Mitsubishi VFGL/VFGLC Load Weighing System Calibration Manual

I. Device Type Specifications

Rope Head Device Types

1. Angle Adjustment Type：Load detection via mechanical plate angle

2. Differential Transformer Type：Signal generation through spring dimension (Calibration required only for no-load)

II. Basic Calibration Procedures

1. No-Load Calibration

Pre-operation Checks

• Verify empty cabin with leveling accuracy ≤±2mm

Device-Specific Operations

• Angle Adjustment Type：
  Set rope head plate angle to -15°~-20° (Use protractor)

• Differential Transformer Type：
  Adjust spring free length to 37.5mm with caliper (Tolerance ±0.5mm)

Common Steps

1. Set elevator to FULL AUTO mode and send to bottom floor

2. Cabin control panel settings:

   • Potentiometers SET1=0, SET0=2

   • Toggle SW1 downwArd, display shows "A2"

3. Elevator ascends to top floor automatically

2. Half-Load Calibration

Device-Specific Operations

• Angle Adjustment Type：
  Apply 50% rated load OR adjust plate to 0°~5°

• Differential Transformer Type：
  Apply 50% rated load,no mechanical adjustment required

Common Steps

1. Set elevator to FULL AUTO mode and send to bottom floor

2. Cabin control panel settings:

   • Potentiometers SET1=0, SET0=3

   • Toggle SW1 downward, display shows "A3"

3. Elevator ascends to top floor automatically

3. Compensation Writing (Critical)

1. Maintain empty cabin condition

2. Set elevator to FULL AUTO mode and send to bottom floor

3. Cabin control panel settings:

   • Potentiometers SET1=0, SET0=7

   • Toggle SW1 switch downward, display shows "A7"

4. Repeat process ≥3 times to minimize inter-floor errors

III. Advanced Functions

1. Load Weighing Disable

• Set SET1=4, SET0=0

• Quickly toggle SW1 twice, display shows "4-0"

2. Real-Time Load Percentage

• Set SET1=7, SET0=4

• Toggle SW1 once, display shows current load (e.g., 65%)

3. No-Load/Half-Load Data Retrieval

Disclaimer: Qualified personnel only. Never perform live circuit operations.

                     This guide is compiled from publicly available technical documents.

                     Always refer to official Mitsubishi manuals for precise operations.

Warning: Never interrupt power during compensation writing (risks EEPROM corruption).