Mitsubishi Elevator Power Circuit (PS) Troubleshooting Guide

2025-03-27

1 Muchidimbu

Iyo PS (Simba Supply) yedunhu inopa yakakosha simba kune ekusimudzira subsystems, yakakamurwa mukatimaitiro emagetsi akajairikauyemasisitimu emagetsi ekukurumidzira.

Mazita Masimba Akakosha

Zita resimba	Voltage	Application
#79	Kazhinji AC 110V	Inotyaira macontactor makuru, maseketi ekuchengetedza, makiyi egonhi, uye mabhureki masisitimu.
#420	AC 24–48V	Inopa masaini ekubatsira (semuenzaniso, kukwirisa switch, muganhu switch, relays).
C10-C00-C20	AC 100V	Masimba emidziyo yemotokari (semuenzaniso, chiteshi chepamusoro chemotokari, pani yekushandisa).
H10-H20	AC 100V	Inopa michina yekumhara (yakashandurwa kuDC kuburikidza nemagetsi mabhokisi ekushandisa yakaderera-voltage).
L10-L20	AC 220V	Magetsi emagetsi.
B200-B00	Inosiyana	Specialized midziyo (semuenzaniso, regenerative braking systems).

Notes:

Voltage mwero inogona kusiyana nemhando yeelevator (semuenzaniso, #79 mumashini-mukamuri-shoma maelevator anowirirana #420 voltage).
Gara uchitarisa kumodhi-yakananga manyorerwo ehunyanzvi kuti uwane chaiwo mataurirwo.

Yakajairika Power Systems

Transformer-Yakavakirwa:
- Kupinza: 380V AC → Kubuda: Multiple AC/DC voltages kuburikidza nesecond windings.
- Inosanganisira rectifiers zveDC zvinobuda (semuenzaniso, 5V yemabhodhi ekudzora).
- Supplementary transformers inogona kuwedzerwa kune yakakwirira-yekumhara michina kana kuchengetedza mwenje.
DC-DC Converter-Yakavakirwa:
- Kupinza: 380V AC → DC 48V → Yakapinzwa kune inodiwa DC voltages.
- Musiyano Wakakosha:
  - Masisitimu anotengeswa kunze kwenyika anochengeta AC simba rekumhara / mota yepamusoro zviteshi.
  - Zvemukati masisitimu anoshandura zvizere kuita DC.

Emergency Power Systems

(M)ELD (Emergency Landing Device):
- Inoshanda panguva yekudzima kwemagetsi kutyaira lift kusvika pauriri hwepedyo.
- Mhando mbiri:
  1. Kunonoka Activation: Inoda kusimbiswa kwekukundikana kwegridi; inoparadzanisa grid simba kusvika kushanda kwapera.
  2. Instant Backup: Inochengetedza DC bhazi voltage panguva yekudzima.

Precharge/Discharge Circuits

Function: Zvakachengeteka kubhadharisa / kuburitsa DC link capacitors.
Zvikamu:
- Precharge resistors (limit inrush current).
- Discharge resistors (bvisa residual energy post-shutdown).
Mhosva Kubata: OnaMC Circuitchikamu chezve regenerative system nyaya.

Precharge Circuit

Precharge Circuit Schematic

2 General Troubleshooting Matanho

2.1 Zvakajairwa Simba System Zvikanganiso

Nyaya Dzakajairika:

Fuse / Circuit Breaker Tripping:
- Matanho:
  1. Bvisa dhiraivha yakashata.
  2. Pima voltage panzvimbo yemagetsi.
  3. Tarisa kudzivirira kwekudzivirira ne megohmmeter (> 5MΩ).
  4. Batanidzazve mitoro imwe neimwe kuti uone chakashata chikamu.
Abnormal Voltage:
- Matanho:
  1. Isora panobva magetsi uye kuyera kubuda.
  2. Kune ma transformer: Gadzirisa matepi ekuisa kana voltage yatsauka.
  3. Kune DC-DC converters: Tsiva iyo unit kana voltage regulation ikatadza.
EMI/Noise Kupindira:
- Mitigation:
  - Kupatsanura yakakwirira/yakaderera voltage tambo.
  - Shandisa orthogonal routing kune mitsetse yakafanana.
  - Ground cable trays kuderedza mwaranzi.

2.2 Precharge/Discharge Circuit Faults

Zviratidzo:

Abnormal Kuchaja Voltage:
- Tarisa precharge resistors yekupisa kana kufuridza fuse
- Kuyera kudonha kwevoltage mukati mezvikamu (semuenzaniso, resistors, tambo).
Yakawedzerwa Kuchaja Nguva:
- Ongorora capacitor, kuenzanisa resistors, uye nzira dzekuburitsa (semuenzaniso, rectifier modules, busbars).

Diagnostic Matanho:

Bvisa zvese zvinongedzo zveDCP (DC Positive).
Kuyera precharge circuit output.
Batanidzazve DCP maseketi nekuwedzera kuti uwane nzira dzisina kujairika dzekuburitsa.

2.3 (M)ELD System Faults

Nyaya Dzakajairika:

(M)ELD Yatadza Kutanga:
- Simbisa #79 chiratidzo chemagetsi panguva yekutadza kwegridi.
- Tarisa bhatiri voltage nekubatanidza.
- Ongorora ese ekudzora switch (esp. mumashini-mukamuri-zvishoma setups).
Abnormal (M)ELD Voltage:
- Edza hutano hwebhatiri uye maseketi ekuchaja.
- Kune masisitimu ane boost transformers: Simbisa yekupinda / kubuda voltage taps.
Kudzima kusingatarisirwi:
- Tarisa kuchengetedza relay (semuenzaniso, #89) uye masaini emusuwo.

3 Zvakajairwa Mhosho & Mhinduro

3.1 Voltage Abnormalities (C10/C20, H10/H20, S79/S420)

Chikonzero	Solution
Input Voltage Issue	Gadzirisa matepi etransformer kana kururamisa grid simba (voltage mukati ± 7% yeyakayerwa).
Kukanganisa kweTransformer	Tsiva kana kupinza/kubuda kwemagetsi kusawirirana kuchiramba.
DC-DC Kukundikana	Test input/output; tsiva shanduko kana yakanganisa.
Cable Fault	Tarisa pasi / mapfupi maseketi; kutsiva tambo dzakakuvadzwa.

3.2 Kudzora Bhodhi Kutadza Kubatidza Simba

Chikonzero	Solution
5V Supply Nyaya	Simbisa 5V kubuda; gadzirisa/tsiva PSU.
Board Defect	Dzorera bhodhi rinokanganisa.

3.3 Transformer Kukuvadza

Chikonzero	Solution
Output Short Circuit	Tsvaga uye gadzirisa mitsetse yakadzika.
Unbalanced Grid Power	Ita shuwa 3-chikamu chiyero (voltage fluctuation

3.4 (M)ELD Kusashanda zvakanaka

Chikonzero	Solution
Kutanga Mamiriro Asina Kusangana	Ongorora kudzora switch uye wiring (esp. mumashini-mukamuri-shoma masisitimu).
Low Battery Voltage	Dzorera mabhatiri; tarisa kuchaja matunhu.

3.5 Precharge/Discharge Circuit Issues

Chikonzero	Solution
Input Power Fault	Gadzirisa grid voltage kana kutsiva magetsi module.
Kukundikana kwechikamu	Edzai uye shandurai zvikamu zvisina kunaka (resistors, capacitors, busbars).

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