Mitsubishi Elevator Brake Circuit (BK) Troubleshooting Guide

Brake Circuit (BK)

1 Muchidimbu

Mabhureki maseketi akaiswa mumhando mbiri:ikozvino-inodzorwauyeresistive voltage divider-controlled. Ose anosanganisiradhiraivha matunhuuyetaura matunhu emhinduro.

1.1 Yazvino-inodzorwa Brake Circuit

• Chimiro:

  • Drive Circuit: Powered by #79 kana S420, inodzorwa kuburikidza ne #LB contactor.

  • Feedback Circuit: Brake contact signals (yakavhurika / yakavharwa) inotumirwa zvakananga kuW1 / R1 mabhodhi.

• Operation:

  1. #LB contactor inovhara → Kudzora unit (W1/E1) inoshanda.

  2. Kudzora unit inoburitsa brake voltage → Brake inovhura.

  3. Mafeedback contacts anofambisa mamiriro ezvombo.

Schematic:

1.2 Resistive Voltage Divider-Inodzorwa Brake Circuit

• Chimiro:

  • Drive Circuit: Inosanganisira voltage-dividing resistors uye mhinduro vanobatika.

  • Feedback Circuit: Inotarisa armature chinzvimbo kuburikidza neNC/NO maitirwo.

• Operation:

  1. Brake Yakavharwa: NC inobata mapfupi-sekete resistors → Yakazara voltage yakaiswa.

  2. Brake Open: Armature inofamba → NC mazita akavhurika → Resistors kuderedza voltage kusvika padanho rekugadzirisa.

  3. Enhanced Feedback: Yekuwedzera HAPANA maitirwo anosimbisa kuvharwa kwebhureki.

Key Note:

• ForZPML-A michina yekudhonza, bhureki gap gadziriso inokanganisa zvakananga kufamba kwezvombo (zvakakwana: ~ 2mm).

2 General Troubleshooting Matanho

2.1 Brake Action Kukundikana

Zviratidzo:

• Brake rinotadza kuvhura/kuvhara (rimwechete kana mativi ose).

• Cherechedza: Kutadza kwebhureki kuzere kunogona kukonzera kutsvedza kwemota (yakanyanya kuchengetedza njodzi).

Diagnostic Matanho:

1. Tarisa Voltage:

   • Tarisa yakazara voltage pulse panguva yekuvhura uye kugadzirisa voltage mushure.

   • Shandisa multimeter kuyera coil voltage (semuenzaniso, 110V ye#79).

2. Ongorora Mazita:

   • Rongedza kuonana kurongeka (pakati pekutonga kwazvino; padhuze nekupera kwekufamba kwekudzivirira kudzora).

3. Mechanical Checks:

   • Lubricate linkages; chengetedza kuti hapana zvipinganidzo munzira yezvombo.

   • Gadzirisabrake gap(0.2-0.5mm) uyetorque springkunetsana.

2.2 Feedback Chiratidzo Chikanganiso

Zviratidzo:

• Brake inoshanda zvakajairwa, asi P1 board inoratidza mabhureki-ane macode (semuenzaniso, "E30").

Diagnostic Matanho:

1. Tsiva Feedback Contacts: Edzai nezvinhu zvinozivikanwa-zvakanaka.

2. Gadzirisa Contact Position:

   • Kudzora kudzora: Gadzirisa mabatiro padhuze nemagumo ekufamba.

3. Tarisa Signal Wiring:

   • Simbisa kuenderera kubva kune vanobatika kuenda kuW1/R1 mabhodhi.

2.3 Zvikanganiso Zvakasanganiswa

Zviratidzo:

• Brake chiito kutadza + kukanganisa makodhi.

Solution:

• Ita yakazara mabhureki kugadzirisa uchishandisa zvishandiso sengeZPML-A Brake Calibration Device.

3 Zvakajairwa Mhosho & Mhinduro

3.1 Brake Yatadza Kuvhura

3.2 Kusakwana Braking Torque

4. Dhiyagiramu

Mufananidzo : Brake Circuit Schematics

• Current Control: Yakareruka topology ine yakazvimirira drive / mhinduro nzira.

• Resistive Control: Voltage-kukamura resistors uye yakakwidziridzwa mhinduro yekubata.

Zvinyorwa Zvinyorwa:
Gwaro iri rinoenderana neMitsubishi elevator zviyero. Gara uchitevera mapuroteni ekuchengetedza uye bvunza zvinyorwa zvehunyanzvi zvemhando-chaiyo ruzivo.

© Elevator Maintenance Technical Documentation