CNTD CJF-E economy square inductive proximity sensors provide 5–15mm nominal metal detection in ABS housings with IP67 protection, red operating indicators and 1.5m prewired cables. Five housing sizes offer NPN/PNP and DC two-wire choices; the 25E, 30E and 40E groups also have AC two-wire models. Match the full model designation to its circuit and setting-range entry.
DNA/DNB identify NPN NO/NC, DPA/DPB identify PNP NO/NC, DDA/DDB are the listed DC two-wire NO/NC models, and AKA/AKB are AC two-wire NO/NC models.
| Housing / nominal distance | NPN | PNP | DC two-wire | AC two-wire |
|---|---|---|---|---|
| 17E / 5mm | CJF17E-05DNA CJF17E-05DNB | CJF17E-05DPA CJF17E-05DPB | CJF17E-05DDA CJF17E-05DDB | No model listed |
| 18E / 5mm | CJF18E-05DNA CJF18E-05DNB | CJF18E-05DPA CJF18E-05DPB | CJF18E-05DDA CJF18E-05DDB | No model listed |
| 25E / 8mm | CJF25E-08DNA CJF25E-08DNB | CJF25E-08DPA CJF25E-08DPB | CJF25E-08DDA CJF25E-08DDB | CJF25E-08AKA CJF25E-08AKB |
| 30E / 12mm | CJF30E-12DNA CJF30E-12DNB | CJF30E-12DPA CJF30E-12DPB | CJF30E-12DDA CJF30E-12DDB | CJF30E-12AKA CJF30E-12AKB |
| 40E / 15mm | CJF40E-15DNA CJF40E-15DNB | CJF40E-15DPA CJF40E-15DPB | CJF40E-15DDA CJF40E-15DDB | CJF40E-15AKA CJF40E-15AKB |
| Group | Nominal distance | Standard iron target | NPN / PNP setting range | DC two-wire setting range | AC two-wire setting range | DC response frequency |
|---|---|---|---|---|---|---|
| CJF17E-05 | 5mm | 18×18×1mm | 0–3.5mm | No AC model listed | 500Hz | |
| CJF18E-05 | 25×25×1mm | 0–3.5mm | ||||
| CJF25E-08 | 8mm | 30×30×1mm | 0–5.6mm | 350Hz | ||
| CJF30E-12 | 12mm | 40×40×1mm | 0–8.4mm | 0–7.5mm | 0–8.4mm | 250Hz |
| CJF40E-15 | 15mm | 60×60×1mm | 0–10.5mm | 0–12.5mm | 0–10.5mm | 100Hz |
Setting ranges depend on the circuit for the 30E and 40E groups; do not substitute the NPN/PNP gap for a DC two-wire selection. AC response frequency is 20Hz. Frequencies are average values using the standard iron target, an interval between successive targets equal to twice the target width, and a sensing gap equal to half the nominal distance.
| Item | NPN / PNP | DC two-wire | AC two-wire |
|---|---|---|---|
| Operating voltage | 10–30VDC | 90–250VAC | |
| Control output | 200mA maximum | ||
| Leakage current | ≤10mA | ≤0.6mA | ≤10mA |
| Residual voltage | ≤1V | ≤3.5V | ≤10V |
| Protection circuits | Surge, reverse-polarity and overcurrent protection | Surge protection | |
| Hysteresis | ≤10% of nominal sensing distance | ||
| Temperature influence | Within ±10% of the sensing distance at 20°C over −25 to +70°C | ||
The DC transistor description also identifies overload and short-circuit protection. Match load current and leakage requirements to the selected control input; two-wire and transistor circuits have different voltage drops.
| Housing group | Outside diameter | Length | Conductors | Strands per conductor |
|---|---|---|---|---|
| 17E / 18E | 3.8mm | 1.5m | 3P for NPN/PNP; 2P for DC or AC two-wire, where a corresponding model is listed | 25 |
| 25E / 30E / 40E | 4.8mm | 30 |
The cable specification identifies AWG22, 0.1mm individual strand diameter and 1.25mm conductor insulation outside diameter. The 25/30 figures describe strands within each conductor. Standard cable is dark gray PVC, and the housing is ABS.
| Position | Field | Known choices |
|---|---|---|
| 1 | CJ | Inductive sensing |
| 2 | F | Square housing |
| 3 | Size | 17, 18, 25, 30 or 40 housing group; use the actual dimensions below |
| 4 | E | Economy type |
| 5 | Distance | 05=5mm; 08=8mm; 12=12mm; 15=15mm |
| 6 | Supply | D=10–30VDC; A=90–250VAC. E=20–60VDC and J=5–10VDC are general guide options without full models in the selection above. |
| 7 | Output circuit | N=NPN; P=PNP; K=AC two-wire. Listed DC two-wire models use the full DDA/DDB designations above; L is also described as a general DC two-wire option. |
| 8 | Output state | A=NO; B=NC. C=NO+NC appears as a general guide choice, without full combined-output models in these tables. |
| 9 | Connection | Blank=free-ended cable; M=straight male M12 four-pin A-coded connector. M-type, DT, AMP and SM connector configurations have additional placeholders without individual subcode definitions here. |
| 10 | Cable material | Blank=PVC; U=PUR; VP=shielded PVC; UP=shielded PUR |
| 11 | Lead length | L1–L5 denote lead-length choices, with L1=1m and lengths not restricted to L5. The standard supplied cable length is 1.5m. |
| Housing | Body length | Square cross-section | Mounting-position references |
|---|---|---|---|
| CJF17E-05 | 28mm | 17×17mm | 24.6mm axial reference; 11mm between illustrated mounting centers |
| CJF18E-05 | 36.2mm | 18×18mm | 26.3mm and 6.8mm axial references; 10.8mm between slot centerlines |
| CJF25E-08 | 39.2mm | 25×25mm | 34.55mm and 1.2mm axial references; 17.9mm between mounting centers |
| CJF30E-12 | 53.2mm | 30×30mm | 45mm and 4mm axial references; 22mm between slot centerlines |
| CJF40E-15 | 53mm | 40×40mm | 47.4mm and 2mm axial references; 30mm between slot centerlines |
These body dimensions exclude the free cable. Use the complete drawings for slot shape, cable-exit location and indicator position; the references above do not specify an unlisted mounting-hole diameter.
All values are millimeters. A and B are the face-to-face and parallel distances shown in the attachment; C, the table's φd row, ℓ and m correspond to the surrounding-metal geometry. The drawing labels the φd reference as d; preserve its illustrated endpoints when checking a rectangular installation. An additional opposing orientation carries a separate 180mm reference; use the diagram matching the actual orientation.
| Group | A | B | C | φd / d | ℓ | m |
|---|---|---|---|---|---|---|
| CJF17E-05 | 30 | 36 | 5 | 15 | 24 | 18 |
| CJF18E-05 | 48 | 40 | 5 | 24 | 33 | 20 |
| CJF25E-08 | 30 | 40 | 5 | 15 | 25 | 20 |
| CJF30E-12 | 60 | 50 | 5 | 30 | 30 | 25 |
| CJF40E-15 | 120 | 70 | 5 | 60 | 45 | 35 |
For NPN/PNP single outputs, brown is +V, blue is 0V and black is the switching output. Connect an NPN load between +V and black, or a PNP load between black and 0V. DC and AC two-wire models connect in series with the load, which may be placed in either lead. The listed AC models operate at 90–250VAC. The attachment retains circuit and NO/NC timing diagrams.
| External example | Supply leads | Output | Selection note |
|---|---|---|---|
| PA10-U input 1 | Brown to 9 (+12V); blue to 10 (GND) | Black to 11 (IN1) | Illustrated DC three-wire sensor connection |
| PA-12 power amplifier | Brown to 6; blue to 5 | Black to 4 | Set the amplifier's NPN/PNP selection switch to match the sensor |
| Item | Specification |
|---|---|
| Protection / indication | IP67; red operating LED |
| Operating / storage temperature | −25 to +70°C / −30 to +80°C, without icing |
| Humidity | 35–95%RH, without condensation |
| Insulation resistance | ≥50MΩ at 500VDC |
| Dielectric strength | 1500VAC, 50/60Hz, 1min |
| Vibration | 1mm amplitude, 10–55Hz swept over 1min, 2h per X/Y/Z direction |
| Shock | 500m/s², approximately 50G, three times per X/Y/Z direction |
| Referenced standards | CCC: GB/T14048.10; TÜV and CE: EN60947-5-2. Supporting certification documents are not included. |
| Utilization references | DC-13: 10–30VDC, 200mA; AC-140: 24–250VAC, 200mA. Model operating ratings remain those in the circuit table. |
Use for ordinary industrial metal-position detection within the specified target, gap, load and mounting conditions. Regional specifications can differ. The manufacturer excludes personnel-safety functions, exceptionally high-reliability nuclear, gas and power systems, harsh outdoor or contaminated environments, fire or explosion hazards, strong acids or alkalis, and military or aerospace applications unless specifically designed and confirmed for that purpose.
