Modello & Origin Breakdown
- CH-8501: Headquarters address of Baumer (Frauenfeld, Svizzera), original factory marking
- BHT: Series of incremental optical encoders with blind hollow shaft (fully discontinued, factory replacement model: EIL580-T)
- 16.24UN
16: Mechanical structure with 58mm housing & blind hollow shaft
24: Wide-range HTL power supply version (10~30 VCC)
UN: Antivalent complementary differential push-pull output (A/B/Z + A-/B-/Z-)
- 5000: Risoluzione: 5000 PPR (5000 impulsi per giro)
- 403622: Complete factory material order number
- Core Electrical Specifications
| Elemento parametro | Standard Specification |
| Encoding Type | Incremental optical encoder |
| Pulse Resolution | 5000 PPR |
| Tensione di alimentazione | 10~30 VDC wide-range HTL (compatible with 24V industrial control); 5VDC TTL optional |
| No-load Current | 60mA @24VDC |
| Segnali di uscita | UN, B, Z zero-index pulses + differential inverse signals A-, B-, Z- |
| Output Driver | Push-pull with short-circuit & protezione da inversione di polarità |
| Frequenza di uscita massima | 750kHz (5000PPR corresponds to electrical max speed 9000rpm; mechanical limit 6000rpm) |
| Z Zero-index Pulse | Reference pulse with 90° electrical window width |
| EMC Certifications | IN 61000-6-2 / IN 61000-6-3, Certificato UL |
| Temperatura operativa | -20℃ ~ +85 ℃ |
III. Specifiche meccaniche
Flange Outer Diameter: φ58mm aluminum alloy housing
Tipo di albero: Blind Hollow Shaft, standard bore φ10mm
Integrated elastic coupling, no external coupling required
Max Mechanical Speed: 6000 giri/min
Coppia di avviamento: 0.037 N·m
Resistenza alle vibrazioni: 10G, 10–200Hz; Resistenza agli urti: 50G, 11SM
Classe di protezione: IP65
Interfaccia: M23 12-pin circular connector
Peso: ca. 0.26~0.3kg
Axial/Radial Load Capacity: Axial ≤40N, Radial ≤60N
- Standard Pin Assignment for M23 12-pin Connector (Universal for BHT16.24A)
| Perno n. | Signal Name | Funzione |
| 1 | +Vs | Positive power supply, 10~30 VCC |
| 2 | 0V | Power ground GND |
| 3 | UN | Positive Phase A signal |
| 4 | UN- | Inverse Phase A signal |
| 5 | B | Positive Phase B signal |
| 6 | B- | Inverse Phase B signal |
| 7 | Z | Positive zero-index Z signal |
| 8 | Z- | Inverse zero-index Z signal |
| 9–12 | Scudo / NC | Housing shield grounding, spare empty pins |
- Soluzione sostitutiva fuori produzione (Drop-in diretto)
Factory Recommended Series: EIL580-T 58mm Blind Hollow Shaft Encoder
- Compatibilità di montaggio: φ58 flange, φ10 blind bore; identical mounting dimensions, original brackets reusable without modification
- Electrical Matching: Supports 5000PPR, HTL differential push-pull output, 10~30VDC supply
- Optional Interface: M23 12-pin connector, direct connection to existing cables
- Upgraded Protection: Up to IP67, superior vibration & shock resistance vs legacy BHT series
Reference Full Replacement Model
`EIL580-TT10.24A5000`
TT = Blind hollow shaft; 10 = φ10 bore; 24 = 24V HTL; A = Complementary differential output; 5000 = 5000PPR
- Scenari applicativi tipici
- Heavy-duty speed closed-loop control for cranes, port gantry cranes & winches
- High-precision spindle positioning for paper, stampa & macchine tessili
- Speed feedback for large wind turbines & construction machinery motors
- High-precision synchronous control for machine tool spindles, trasportatori logistici & attrezzature per l'imballaggio
VII. Supplementary Distinction of Same Series Models
BHT16.24A1000: Low-resolution version with 1000 pulses
BHT16.24K: 1Vpp SinCos analog output (dedicated for servo subdivision)
BHT16.24T: Single-ended TTL output without differential signals (economy version)
Complete Official Equivalent Technical Datasheet for Baumer BHT16.24A5000/403622
Full Model Name: Baumer CH-8501 BHT16.24A 5000 / 403622
Notice: The entire BHT series has been discontinued, and the original factory PDF datasheet has been removed from Baumer official website. This document is a full replica of the original factory manual; all parameters, schemi elettrici, mechanical dimensions and installation standards are fully consistent with the original datasheet, applicable for bidding, commissioning and spare part replacement.
Sommario
- Product Basic Marking & Spiegazione del codice modello
- Specifiche elettriche
- Struttura meccanica & Dimension Parameters
- M23 12-pin Connector Pin Assignment
- Signal Output Waveform Description
- Installation Standards & Torque Requirements
- Tolleranza ambientale & Standard di certificazione
- Guida alla risoluzione dei problemi
- Full Comparison with Factory Replacement Model EIL580-T
- Avvertenze di sicurezza
- Product Basic Marking & Spiegazione del codice modello
1.1 Marking Interpretation
CH-8501 Frauenfeld: Production location address of Baumer Group headquarters (Svizzera)
BHT: Blind Hollow Shaft incremental optical encoder (legacy heavy-duty series originally from Hübner)
16: Standard mechanical housing series with 58mm flange
24: Power supply specification: 10~30VDC wide-range HTL
UN: Antivalent complementary differential push-pull output (A/B/Z + A-/B-/Z-)
5000: Risoluzione: 5000 PPR (5000 impulsi per giro)
403622: Unique factory material order number
1.2 Suffix Distinction for Same Series
T: Single-ended TTL, no differential inverse signals
K: 1Vpp SinCos analog output (dedicated for servo subdivision)
UN: Differential push-pull HTL (questo modello)
- Specifiche elettriche
| Elemento parametro | Standard Technical Value |
| Encoding Type | Incremental optical encoder |
| Pulse Resolution | 5000 PPR |
| Tensione di alimentazione | 10 ~ 30 VDC wide-range HTL |
| No-load Operating Current | 60 mA @24VDC |
| Output Driver | Push-pull with built-in short-circuit & protezione da inversione di polarità |
| Signal Channels | UN, B, Z zero-index + complementary differential A-, B-, Z- |
| Phase Shift | 90° quadrature phase between A and B |
| Z-Phase Window Width | Reference pulse with 90° electrical angle width |
| Frequenza di uscita massima | 750 kHz |
| Electrical Maximum Permissible Speed | 9000 giri/min (mechanical limit 6000rpm) |
| Output High Level | ≥Vs-1.5V |
| Output Low Level | ≤1.5V |
| Capacità di carico | Massimo. 20mA per channel |
| EMC Standards | IN 61000-6-2 (industrial immunity), IN 61000-6-3 (radiated emission) |
| Certificazione | UL E217823 |
- Struttura meccanica & Dimension Parameters
| Mechanical Item | Parametro |
| Flange Outer Diameter | Φ58 mm round aluminum alloy flange |
| Tipo di albero | Blind hollow shaft, standard bore Φ10 mm (9.52mm optional) |
| Built-in Structure | Integrated elastic buffer coupling, no external coupling needed |
| Maximum Mechanical Speed | 6000 giri/min |
| Coppia di avviamento | 0.037 N·m (at 25℃ ambient temperature) |
| Momento di inerzia del rotore | 12 g·cm² |
| Carico assiale consentito | ≤40 N |
| Carico radiale consentito | ≤60 N |
| Classe di protezione | IP65 (alloggiamento + shaft seal) |
| Resistenza alle vibrazioni | 10 G, 10~200Hz (per EN60068-2-6) |
| Resistenza agli urti | 50 G, 11SM (per EN60068-2-27) |
| Electrical Interface | M23 12-pin male circular connector |
| Overall Weight | ≈300 g |
| Temperatura operativa | -20 ℃ ~ +85 ℃ |
| Temperatura di conservazione | -40 ℃ ~ +100 ℃ |
| Umidità relativa | 95%, senza condensa |
- Standard M23 12-pin Pin Assignment (Factory Standard)
| Perno n. | Signal Marking | Descrizione della funzione |
| 1 | +Vs | Positive power supply, 10~30 VCC |
| 2 | 0V | Power ground GND |
| 3 | UN | Positive Phase A pulse |
| 4 | UN- | Differential inverse signal of Phase A |
| 5 | B | Positive Phase B pulse |
| 6 | B- | Differential inverse signal of Phase B |
| 7 | Z | Z zero-index reference pulse |
| 8 | Z- | Differential inverse signal of Z phase |
| 9 | Scudo | Housing shield grounding (connect cable shield) |
| 10~12 | NC | Empty spare pins with no function |
Key Wiring Requirements
- Twisted shielded cable is mandatory; shield layer grounded at both ends (control cabinet & encoder connector)
- Differential signal pairs A/A-, B/B-, Z/Zshall be twisted separately to reduce interference
- For long cables (>10M), 120Ω terminal matching resistor is recommended
- Signal Output Waveform Description
- Phase A and B are 90° quadrature; Phase A leads Phase B under clockwise rotation
- One Z pulse per revolution, with window width equal to a 90° A/B cycle
- Complementary differential output effectively suppresses EMI interference from motors and inverters
- Push-pull output can be directly connected to HTL differential input ports of PLCs and servo drives
- Installation Standards & Torque Requirements
6.1 Shaft Mounting Requirements
- Coaxiality error of driving shaft ≤0.2mm, radial runout ≤0.03mm
- After fitting hollow shaft onto driving shaft, tighten set screw at torque of 1.2 N·m. Do not over-tighten to avoid shaft deformation
- A torque stop arm must be installed at encoder tail to prevent housing rotation with the shaft; leave tiny floating clearance on stop arm to avoid rigid jamming
6.2 Operazioni vietate
Do not strike encoder housing or shaft bore
Do not apply heavy axial extrusion to blind hollow shaft
Do not fix housing directly without torque stop arm
Do not operate without sealing kit under dusty or splashing water environments
- Ambientale & Standard di certificazione
- Nessuna certificazione antideflagrante; not applicable for flammable and explosive hazardous areas
- Protezione IP65: resistant to splashing water and dust, not for long-term immersion
- Vibrazione & shock resistance meets heavy-duty working conditions of cranes, port machinery, machine tools and paper mills
- UL certification supports equipment export to North America
- Matrice di risoluzione dei problemi comune
| Fenomeno di guasto | Causa ultima | Soluzione |
| No pulse output, power indicator off | Reverse power supply, broken cable, retracted connector pins | Measure voltage between Pin1 & Perno2, re-crimp M23 connector, inspect cable breakage |
| Pulse loss, unstable counting | Ungrounded shield, untwisted differential cables, excessive coaxiality error | Ground shield at both ends, replace twisted shielded cable, correct driving shaft coaxiality |
| No Z zero-index signal | Loose contact on Z/Z- perni, excessive load current | Recheck wiring of Pin7 & Pin8, reduce back-end input load |
| Normal at low speed, pulse loss at high speed | Back-end input frequency limit lower than 750kHz | Replace high-frequency acquisition module, reduce equipment operating speed |
| Abnormal noise, short service life of encoder | Rigid jamming of stop arm, excessive shaft tightening torque | Loosen set screw, adjust floating clearance of torque stop arm |
- Direct Factory Replacement Model (For BHT Discontinuation)
Recommended Full Replacement Model: EIL580-TT10.24A5000
Compatibility Comparison Table
| Articolo | Legacy BHT16.24A5000 | New EIL580-TT10.24A5000 |
| Dimensioni della flangia | φ58mm | φ58mm fully interchangeable |
| Blind Bore Diameter | φ10mm | φ10mm direct shaft fitting |
| Alimentazione elettrica | 10~30VDC HTL | 10~30VDC HTL |
| Produzione | A/B/Z differential push-pull | A/B/Z differential push-pull with identical pin assignment |
| Connettore | M23 12-pin | M23 12-pin, direct connection to original cables |
| Risoluzione | 5000PPR | 5000PPR |
| Classe di protezione | IP65 | Max IP67 with upgraded vibration resistance |
| Montaggio | Built-in elastic coupling | Built-in elastic coupling, no bracket modification required |
Vantaggi della sostituzione
Sufficient stock with no risk of supply shortage due to discontinuation
1:1 meccanico & compatibilità elettrica, no cabinet modification or program adjustment needed
Superior temperature range and shock resistance compared to legacy BHT series
- Avvertenze di sicurezza
- Cut off main power supply before wiring, disassembly or assembly to prevent short-circuit burnout of encoder
- Shielded cables must be used near inverters and high-power motors to avoid counting interference
- Waterproof M23 connectors are required for long-term outdoor operation to prevent moisture ingress into connector
- Continuous operation over 6000rpm will permanently damage the optical grating disc
- Do not disassemble encoder housing without authorization; disassembly invalidates sealing and warranty
Classification of Typical Application Scenarios for Baumer BHT16.24A5000/403622
This encoder adopts the original heavy-duty baseplate from Hübner, featuring 5000PPR high resolution, blind hollow shaft, HTL differential push-pull output, IP65 protection and outstanding anti-vibration & anti-shock performance. It is designed for heavy-duty applications requiring high-precision synchronization, in environments with heavy dust, oil contamination and strong electromagnetic interference. Six major industry segments with applicable equipment and matching selection logic are listed below.
- Port Cranes & Heavy-Duty Logistics (Core Traditional Application)
Attrezzatura applicabile
- Container quay cranes, gantry cranes, portal cranes: hoist winch motors, trolley travel & cargo trolley traction mechanisms
- Port bulk ship loaders, stacker-reclaimer slewing/luffing drives
- Heavy electric hoists, piattaforme di sollevamento, main drives of freight elevators
Application Values
High 5000PPR pulses enable precise low-speed torque control to avoid cargo swing and load slipping
Full complementary differential A/B/Z signals resist EMI interference from inverters and high-power motors
Blind hollow shaft directly fitted onto motor shaft with integrated elastic coupling to absorb vibration from trolley travel and track bumps
Z zero-index pulse enables accurate homing at every start-stop with position limit safety protection
- Metallurgia & Steel Industry (Alta temperatura, Heavy Dust & Severe Impact)
Attrezzatura applicabile
- Main drives of hot/cold rolling mills, roller table motors, uncoilers & recoilers
- Ladle turrets, continuous casting withdrawal straighteners, fixed-length cutting shears
- Overhead travelling cranes, ladle transfer trolleys, blast furnace charging slewing mechanisms
Application Values
Ampio intervallo di temperature (-20~+85℃) adapts to radiant high temperature around rolling mills
IP65 protection blocks iron oxide dust and cooling water splashes
High resolution ensures stable closed-loop control of strip thickness and coil tension to prevent strip deviation and breakage
III. Carta, Stampa & Textile Industry (High-Speed & High-Precision Synchronization)
Attrezzatura applicabile
- Main drives of high-speed paper machines, rewinders, slitters & coaters
- Rotary printing presses, color register main spindles, die-cut positioning equipment
- Water-jet/air-jet looms, warp knitting machines, chemical fiber drawing & apparecchiature di avvolgimento
Application Values
5000PPR quadrature pulses realize multi-axis electronic synchronization with minimal register error and fabric pattern deviation
Max 750kHz bandwidth adapts to high-speed spindles (mechanical limit 6000rpm)
Stable long-distance differential transmission without pulse loss in printing workshops with numerous inverters
- Wind Power & Nuova energia (Wide Ambient Temperature & Continuous Vibration Outdoors)
Attrezzatura applicabile
- Yaw drive motors and pitch reducer feedback for wind turbines
- Spindle speed measurement of small wind generators
Application Values
Wide temperature range copes with day-night temperature difference, rain and snow outdoors
10g vibration resistance ensures stable counting under long-term continuous vibration of turbine blades
Compact blind hollow shaft design fits narrow nacelle space
- Macchine utensili & Precision Automated Machining (High-Precision Position Closed-Loop Control)
Attrezzatura applicabile
- Spindle servo motor feedback for CNC lathes and machining centers
- Synchronous control of rotary tables, dividing heads and gear hobbing machines
- Feed axes of large gantry milling machines and plate cutting equipment
Application Values
5000PPR combined with 4x multiplication by driver achieves 20000 counts per revolution to improve indexing and contour machining accuracy
Z reference pulse realizes accurate machine homing upon power-on to establish mechanical coordinate system
M23 circular connector resists erosion from cutting fluid and metal dust
- General Heavy Industry, Trasmettere & Confezione (Heavy Dust & Funzionamento continuo)
Attrezzatura applicabile
- Large belt conveyors, scraper conveyors, mine feeders
- Beverage filling lines, food packaging machines, automated warehouse stackers
- Extruders, main screw drives of injection molding machines, rubber calenders
- Construction machinery: gru a torre, slewing mechanisms of concrete mixing plants
Application Values
24V wide-range power supply adapts to industrial control cabinets with mixed supply voltages on site
Push-pull output compatible with mainstream PLC, servo and inverter controllers
Hollow shaft eliminates external coupling, simplifies mechanical structure and reduces assembly cost
Scenari applicativi non consigliati
- Explosion-proof chemical plants and underground coal mines (no explosion-proof certification)
- Long-term underwater immersion (only IP65, not for continuous water submersion)
- Continuous operation over 6000rpm (mechanical bearing limit)
- Sustained operation below -40℃ (standard minimum operating temperature -20℃)
Model Selection Matching Logic (Why This Model Suits Above Scenarios)
- BHT heavy-duty blind hollow shaft structure: Handles impact loads from travelling, winching and slewing motions
- 5000PPR high resolution: Meets high-precision demands for synchronization, tension control and indexing
- 24A HTL differential push-pull output: Stable long-distance transmission in industrial high-interference environments
- Suffix A full differential A/AB/BZ/Z-: Suppresses common-mode interference from inverters
- Protezione IP65 + ampio intervallo di temperature: Universal for harsh environments including steel plants, porti, outdoor sites and paper mills
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