Baumer BHT16.24A5000/403622 Incremental Encoder

Model full designation: BHT 16.24A5000 / 403622, 403622 est Baumer original part-number, blind hollow-shaft optical codeur incrémental, 5000 PPR resolution.

Model Code Bit-by-bit Decoding

Segment de modèle	Description
BHT	Série de produits: Incremental blind hollow‑shaft encoder series
16	Mechanical structure code, internal structure revision for BHT series
24	Housing mechanical dimension code; A = output circuit / electrical configuration
5000	Pulses per revolution: 5000 PPR
403622	Baumer OEM material order number

Électricité de base & Spécifications mécaniques

Article	Paramètre
Measuring principle	Optical incremental, differential signals A/B/Z‑ /A‑/B‑/Z‑
Résolution	5000 PPR (5000 pulses per revolution)
Type d'arbre	Blind hollow shaft Ø10 mm (clamping‑type)
Flange outer diameter	Φ58 mm synchro flange
Protection contre la pénétration	IP65 (housing side)
Max.. rotational speed	≤6000 rpm
Tension d'alimentation	10‑30 VDC (HTL push‑pull output)
Output connector	M23‑12‑pin male connector
Température de fonctionnement	‑20 ℃ ~ +85 ℃; Stockage:‑40~+85 ℃ (no condensation permitted)
Résistance aux vibrations	10 g 10‑200 Hz; Résistance aux chocs:50 g /11 ms
Permissible shaft load	Axial ≤10 N; Radial ≤20 N
Poids	Environ. 300 g; Boîtier en alliage d'aluminium
Humidité	95 %RH, condensation strictly forbidden

⚠️Boundary conditions: Condensation prohibited; Do not exceed 6000 rpm; Apply correct tightening torque for hollow-shaft clamp, over-torque will damage bearings permanently.

M23-12-Pin Pin-out Definition (Standard for BHT Series)

Épingle	Signal	Épingle	Signal
1	UN	7	/UN
2	B	8	/B
3	Z	9	/Z
4	0V(GND)	10	Non utilisé
5	+VCC(10‑30V)	11	Non utilisé
6	Non utilisé	12	Non utilisé

Sortir: HTL push-pull differential signals. Controller must support differential reception; single-ended wiring degrades noise immunity significantly.

In-depth Operating Principle
Optical code disc rotates synchronously with motor hollow shaft.
LED light passes through grating of code disc; photo-receivers generate A/B quadrature pulses with 90° phase offset; Z is index mark (one pulse per revolution).
On-board driver outputs complementary differential signals A /A, B /B, Z /Z to suppress EMI over long-distance transmission.
Controller judges rotation direction via A/B phase relation; counts pulses for speed & position calculation; Z-pulse is used for homing reference.
Scénarios d'application typiques

Servo motors, variable-frequency drives, machine-tool spindles, machines d'emballage, équipement textile, material handling conveyors, machines à imprimer, high-speed high-accuracy speed & position feedback.

Replacement Selection (Obsolète / Spare-part substitution)

BHT16.24A5000/403622 belongs to older BHT series; prioritize Baumer original-series replacement:

Direct drop-in replacement: BHT 16.24A5000 (verify order number 403622). Mécanique, pin-out and 5000 PPR fully compatible.
Cross-series alternative: BDT 58 blind-hollow-shaft series, 5000 PPR HTL, M23-12-pin. Mechanically interchangeable; verify ordering codes.

⚠️Replacement risks: Confirm output type (must be HTL, avoid mis-ordering TTL-5 V version); hollow-shaft bore must be Ø10 mm; connector M23-12-pin.

Selection Pitfalls & Forbidden Operations
❌Excessive tightening torque on shaft-clamping screw will squeeze internal bearing and cause premature failure.
❌Do NOT deploy under condensing-humidity conditions; IP65 only protects against dust and splash water, does NOT resist internal condensation.
❌Do NOT exceed max mechanical speed 6000 rpm.
✅For cable length＞10 m: use shielded twisted-pair cable; shield grounded only at controller side.
✅Use isolated power supply for encoder to avoid ground-loop-induced pulse loss.
Dépannage courant

Phénomène de défaut	Root‑cause	Remède
Pulse loss / random jitter	Grounding interference, damaged cable, supply voltage drop	Vérifier la mise à la terre du blindage; measure supply voltage at encoder; replace shielded cable
No output at all	Missing supply, pin‑retreat inside M23 connector	Measure Vcc/GND; re‑crimp M23 connector contacts
Intermittent Z index‑pulse loss	Damaged index grating, mechanical mounting play	Check hollow‑shaft clamp tightness; replace encoder if hardware failure
Encoder overheating	Supply voltage＞30 V, internal short‑circuit	Verify power‑supply rating; inspect wiring for short‑circuits

BHT16.24A5000-403622 Complete Wiring-Commissioning Procedure + Procurement-Replacement List

Appareil: Baumer blind hollow-shaft incremental encoder, Ø10 mm bore, 5000 PPR, HTL differential push-pull output, M23-12-pin male connector.

Mechanical Installation Procedure (Clamping-type Blind Hollow-shaft)

⚠️No hammering / striking encoder housing; do NOT force-push onto shaft; clamp-screw nominal torque: 2.0-2.5 N·m. Over-torque destroys internal bearings.

Clean target shaft surface, remove burrs & metal chips; shaft diameter Ø10 g6 tolerance.
Slide encoder hollow-shaft gently onto target shaft; do NOT tighten clamp screw yet.
Mount anti-rotation leaf spring; fasten spring to encoder housing and equipment fixed-mounting surface to absorb rotational torque.
Adjust position: avoid axial compression; axial play＜0.3 mm, radial run-out＜0.05 mm.
Tighten hollow-shaft clamping hex-socket screw with torque wrench to 2.0-2.5 N·m.
Manually rotate main shaft; full rotation shall be free-running without friction or abnormal noise.
Vérification: encoder housing must keep stationary; only inner hollow-shaft rotates together with main shaft.

❌Strictly Forbidden:

Rely on cable tensile-strength for anti-rotation without anti-rotation spring.

Tightening torque＞3 N·m.

Axial forced compression of encoder unit.

M23-12-Pin Wiring Definition (HTL Push-pull 10-30 VDC)

Épingle	Signal	Remarque
1	UN	Phase‑A output
2	B	Phase‑B output
3	Z	Z index pulse
4	0V(GND)	Power‑supply negative; must share common GND with controller
5	+VCC	10‑30 VDC power supply
7	/UN	Complementary differential A‑bar
8	/B	Complementary differential B‑bar
9	/Z	Complementary differential Z‑bar
6,10,11,12	Caroline du Nord	Non connecté; no wiring permitted

Controller side must receive full differential pairs A-/A, B-/B, Z-/Z; avoid single-ended-only connection. For cable＞10 m use shielded twisted-pair; shield connected at controller-end only; encoder-end shield floating to eliminate ground-loop interference.

Spécification du câble

Cable type: shielded twisted-pair encoder cable.

Max transmission distance for HTL differential: 80 m.

Do NOT route encoder signal cables parallel alongside power-cables inside same duct; cross-routing preferred.

Power-on Commissioning Full Workflow

All wiring must be performed with power OFF; power-up only after wiring completion to prevent reverse-polarity burnout.

Power-OFF wiring verification

Confirm +Vcc /0V no reverse-connection; unused pins left open; differential pairs matched one-to-one.

Confirm shield grounding configuration.

No-load power-on measurement

Power-up; measure voltage between pin5-pin4 at M23 connector; stable 10-30 VDC, voltage drop ≤1 V.

Static idle level for A/B/Z approximates supply voltage (HTL push-pull characteristic).

Manual shaft-turn test (étape critique)

1) Rotate main-shaft slowly by hand.

2) Oscilloscope check: A-B phase offset strictly 90°; one Z-pulse per full mechanical revolution.

3) Without oscilloscope: monitor high-speed-counter inside controller; count increases forward-rotation, decreases reverse-rotation.

4) One Z-trigger per mechanical revolution for homing reference.

Controller parameter-setting key-points

Input mode: differential HTL push-pull input, NOT TTL-5 V.

Counting mode: 4-fold quadrature decoding (rising & falling edges A/B); 5000 PPR ×4 = 20000 counts per revolution.

Enable Z-index function for home-position reset.

Keep input-filter parameter minimal; heavy-input-filter under high-speed operation causes pulse-loss.

Load-connected trial-run

Low-speed operation; verify no count-jitter or pulse-loss.

Ramp-up speed within max 6000 RPM; no alarm reported.

Homing test: trigger Z-index pulse, confirm stable repeatable home-position.

Supplementary Quick Troubleshooting Table

Phénomène de défaut	Articles d'inspection	Remède
Zero pulse output after power‑on	Pin5‑pin4 supply voltage; connector pin‑retreat; reverse power‑supply	Prestore power supply; re‑crimp M23 connector
Random count‑jump / pulse‑loss	Shield grounding; power‑cable crosstalk; power‑supply ripple	Single‑end shield grounding; isolate encoder power supply; separate from power‑cables
Intermittent Z‑pulse dropout	Mechanical looseness; damaged index‑grating; bad contact	Re‑check clamp torque & anti‑rotation spring; replace encoder upon hardware failure
Opposite rotation‑direction reading	A‑B phase wiring swapped	Swap A & B wiring; or invert direction parameter inside controller
Surchauffe & alarm after runtime	Supply＞30 V; internal short‑circuit	Replace power‑supply unit; eliminate short‑circuit fault

Procurement-ready Replacement-model List (directly forward to purchasing department)

Original part: BHT16.24A5000 / Order No. 403622

✅Original-manufacturer direct replacement (100 % mechanical-electrical drop-in compatible)

BHT16.24A5000, Order No. 403622

Prerequisite: Original stock available; HTL push-pull differential, M23-12-pin, blind-bore Ø10 mm, 5000 PPR.

⚠️Same-brand alternative (mécaniquement compatible; interface double-check mandatory)

BDT58-10-5000-HTL-M23-12

Synchro-flange Φ58 mm, blind hollow-shaft Ø10 mm, 5000 PPR HTL differential M23-12-pin; mechanical interchangeable. Mandatory order specification: HTL output, NOT TTL-5 V.

⚠️Third-party compatible alternatives (domestic spare-parts for project retrofitting)

Hard mandatory constraints (all items must be satisfied simultaneously):

Construction: Φ58 mm synchro-flange, clamping-type blind hollow-shaft bore Ø10 mm.

Résolution: 5000 PPR.

Sortir: HTL push-pull differential A-/A B-/B Z-/Z.

Tension d'alimentation: 10-30 VDC.

Connecteur: M23-12-pin male plug.

Max speed ≥6000 rpm; IP65 protection rating.

❗Replacement risk warning: Third-party encoders may have different M23-12-pin pin-assignments. Do NOT directly plug original cable; re-terminate wiring is mandatory.