Otis Speed Measure Box

Description

Otis Speed Measure Box OH5000-CS2 Brief Introduction

Product Name	Otis Speed Measure Box
Model Number	OH5000-CS2
Quality	Original.Brand New
Payment	T/T. Paypal. Western Union
Delivery	3-5 Working Days
Packaging	Packed by carton

Otis Speed Measure Box OH5000-CS2 – Precision Speed Feedback for OH5000 Modernisation | Nanjing Zhuye Elevator Parts

In an OH5000 machine-room lift, speed is everything — and the OH5000-CS2 Speed Measure Box is the eye that watches it. This compact, SIL-2 rated unit converts encoder pulses into real-time speed and position data, feeding the GECB-AP or KONE LCE CPU with ±0.5 % accuracy. Whether the car is creeping at 0.1 m/s or racing at 2.5 m/s, CS2 ensures levelling within ±1 mm and prevents over-speed faults. When it drifts, the car overshoots, undershoots, or triggers emergency stops. Nanjing Zhuye Elevator Parts keeps genuine OH5000-CS2 boxes in anti-static packaging, pre-calibrated and ready for next-day despatch — helping you restore precision speed feedback without costly OEM delays.

Product snapshot

Otis part number OH5000-CS2, hardware rev. CS2, firmware CS-2.8
Dual-channel incremental encoder input, 5 V / 12 V differential, 1 MHz max
0-10 V analogue speed output, 4-20 mA current loop, 24 V DC supply, 80 mA consumption
Measuring range 0-6 m/s, resolution 0.01 m/s, linearity ±0.5 %, temperature drift < 0.02 %/°C
IP65 aluminium housing, PUR cable 3 m, M12 connector option, −25 °C to +70 °C
Compatible with Otis OH5000, Gen2® Switch, 4200/5200 high-speed controllers
CE, UL, RoHS, REACH and Otis QES 2024 approved

Where it works

Machine-room or machine-room-less installations with incremental encoder on motor or sheave
Modernisation packages replacing obsolete CS1 or tachometer feedback units
Any controller expecting SIL-2 certified speed and position signal

Installation method – 15-minute precision swap

Place lift on inspection mode; stop at top landing; switch OFF main breaker; lock & tag.
Remove old CS box; photograph encoder wiring and M12 orientation.
Mount new OH5000-CS2 on DIN rail; torque M4 screws to 1.2 Nm.
Connect 5 V encoder A+/A-/B+/B-, 24 V DC (brown +, blue −), analogue output to GECB.
Power up; green “RUN” LED must illuminate within 3 s, “ENC” LED flashes with pulses.
Zero calibration: car at floor level, OCS-2.8 software, speed = 0.00 m/s ±0.01 m/s.
Span calibration: run at rated speed, output = 10.00 V ±0.05 V (2.5 m/s example).
Run full-speed up/down 10 cycles; verify speed error < ±0.5 % at each floor.
Seal cable gland; apply torque-stripe paint; log zero/span values and serial number.

Replacement cycle & preventive maintenance

Otis bulletin SB-CS-2024-03 recommends:

Zero check every 6 months: drift > ±0.02 m/s requires recalibration.
Visual inspection every 12 months: check for oil, cracked cable, LED status.
Replace entire box every 5 years or 1 million cycles, whichever comes first.
Immediate replacement if:
– zero drift > ±0.05 m/s after recalibration,
– insulation < 1 MΩ between wire and shield,
– housing cracked exposing electronics,
– LED off while 5 V present and encoder rotating.

Pro tip: 70 % of premature failures are traced to loose encoder connectors — re-seat and apply thread-locker every year.

Maintenance tips from Nanjing Zhuye Elevator Parts

Always use shielded M12 connector for 5 V encoder; tin contacts oxidise and cause drift.
Never pressure-wash the box; water kills IP65 in minutes.
Keep a spare OH5000-CS2 in every service van; at 0.3 kg it costs less than one callback.
After heavy rain, run empty car and check zero drift < 0.01 m/s.
Order the “Speed Box Kit” (CS2 + M12 connector + calibration certificate) from Nanjing Zhuye Elevator Parts to eliminate parts hunting and ensure matched components.

Why buy from Nanjing Zhuye Elevator Parts?

We are an Otis-authorised distributor, importing OH5000-CS2 directly from the Czech factory, vacuum-calibrating every unit and shipping with a 24-month replacement warranty. Stock is stored in humidity-controlled bins to prevent electronics drift. Orders placed before 15:00 China time leave the same evening via DHL Express, arriving Europe or North America in 2–4 days. Bulk pricing starts at ten pieces; we can supply pre-calibrated boxes with your job-specific zero/span values and include a loaner unit to keep your lifts measuring during the swap.

Conclusion

The OH5000-CS2 Speed Measure Box is the silent speedometer that tells every OH5000 lift exactly how fast it is moving. By installing the genuine unit, calibrating zero/span correctly and replacing it before encoder drift, you ensure every landing is level, every stop is smooth, and every passenger steps out with confidence. Stock genuine OH5000-CS2 from Nanjing Zhuye Elevator Parts today — because when speed measurement stops, precision stops.

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