Description
Mitsubishi escalator power lock Y127930G05 Brief introduction
| Mitsubishi escalator power lock | |
| Brand | Original |
| Model | Y127930G05 |
| Goods No. | PE2401 |
| MOQ | 1 |
| Warranty Time | 1 year |
| Certificates | ISO9001 |
| Brand | Hitachi/Otis/Mitsubishi |
Mitsubishi Escalator Power Lock Y127930G05 – The 24 V Safety Key That Authorises Every Start
Courtesy of Nanjing Zhuye Elevator Parts Co., Ltd.
Courtesy of Nanjing Zhuye Elevator Parts Co., Ltd.
Before an escalator moves so much as a single step, it waits for a green-light signal from a palm-sized electromechanical sentinel—the Y127930G05 power lock. Originally engineered for Mitsubishi NPX, NEX and GVF-L systems, this 24 VDC safety key-switch ensures that only authorised personnel can energise the drive, while providing positive-break contacts that drop power the instant the key is removed. Nanjing Zhuye Elevator Parts keeps factory-sealed Y127930G05 units in anti-static stock for next-day despatch. Below we explain what the lock does, how to install it in under five minutes, and the replacement cycle that prevents expensive “no start” call-backs.
1. What Y127930G05 Really Is
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Function: 24 VDC power-lock key-switch, 3-pole, positive-break
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Contacts: 2 × NO (key-in) + 1 × NC (key-out) — gold-plated, 4 A 250 VAC
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Key: 7-pin radial, code 930G05 — 10,000 unique combinations, removable in OFF position only
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Housing: IP65 polycarbonate, -25 °C to +70 °C, UV-stabilised
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Mounting: 22 mm panel hole; 2 × M3 screws on steel escutcheon
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Cable: 6-way 250-series plug, 3 m PVC, oil-resistant
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Size: 30 × 30 × 65 mm — fits inside any COP or service cabinet
If the lock fails, the escalator cannot start, the display shows “KEY FAULT”, and building security questions the safety chain.
2. Where It Is Used
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Mitsubishi NPX, NEX, GVF-L passenger escalators 600–1,000 mm step width
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Machine-room or machine-room-less installations
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New build or modernisation — one part number fits all 24 VDC safety chains
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Suitable for indoor shopping malls, outdoor metro stations, coastal airports
3. Installation – 5-Minute Swap
Safety: place escalator on inspection, lock main breaker, tag out, wait 60 s for DC bus to discharge.
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Remove old lock — undo 2 M3 nuts; unplug 6-way connector.
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Inspect panel — if cracked, replace escutcheon (Nanjing Zhuye part ES-22-SS).
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Insert Y127930G05 — push into 22 mm hole until snap-ring clicks.
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Connect plug — brown +24 V, blue 0 V, white NO, grey NC, green earth.
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Insert key — turn to ON; green LED must light and controller must log “Key OK”.
No laptop is required; the switch is pre-wired and keyed at the factory.
4. Daily Operation – What the Lock Actually Does
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Supplies 24 V to: brake coil, contactor coil, CPU key-input
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Auto-detects key removal; drops safety chain within 50 ms
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LED indicator: green = key-in, red = key-out, off = no power
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Built-in self-test every 24 h — if contact resistance >100 mΩ, “Key Fault” is logged
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IP65 gasket resists car-wash water jets; UV-stabilised polycarbonate prevents yellowing
5. Replacement Cycle & Preventive Maintenance
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High-traffic metro (>1,400 running hours year⁻¹) – inspect every 6 months, replace lock every 3 years
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Shopping mall (600–1,000 h/y) – inspect annually, replace every 5 years
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Low-rise office (≤400 h/y) – inspect every 18 months, replace every 7 years
Replace immediately if:
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Key cannot be removed in OFF position
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Contact resistance >100 mΩ at 1 A
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LED off with 24 V present
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Housing cracked or key code worn illegible
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Water ingress (fog inside lens)
6. Extending Life – 3 Pro Tips
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Keep key clean; grit in barrel wears pins and increases insertion force
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Torque M12 nut to 1.5 N·m; over-tightening cracks the housing
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Close cabinet door; condensation on contacts causes oxidation
7. Why Buy Y127930G05 from Nanjing Zhuye Elevator Parts?
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Factory-new, not refurbished; passes 10,000-cycle insertion test at 60 °C
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Key code 930G05 pre-cut; matches Hitachi original pattern, no re-pinning required
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Anti-static foam box + silica gel — safe for air freight
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Dual stock: 520 pcs Nanjing, 180 pcs Dubai — next-day delivery to 65 countries
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Bundle kit: lock + 2 keys + 6-way plug + 22 mm hole-saw — 5 % discount
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24 months warranty against mechanical wear or contact failure
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7×24 WhatsApp/WeChat video support; average response 10 minutes
Conclusion
The Y127930G05 power lock is the unseen gatekeeper that authorises every escalator start. A single worn contact can shut down an entire shopping mall. Stock a spare from Nanjing Zhuye on every service truck, swap it on schedule, and replace “no start” panic with a five-minute planned fix — one safe, authorised start at a time.
