CNTD CJY/M cylindrical inductive proximity sensors use a direct male M12 four-pin A-coded connector for metal-position detection. Sensing housings in M12, M18 and M30 sizes cover 2–15mm nominal distances with flush or nonflush installation. Nickel-plated brass bodies, red operating LEDs and IP65 protection support ordinary industrial sensing within the specified environmental limits.
All transistor models use 10–30VDC. DNA/DNB are NPN NO/NC; DPA/DPB are PNP NO/NC; DNC/DPC provide NO+NC outputs. The single-output connector drawing does not define both conductors of a combined-output version.
| Head / nominal distance | NPN choices | PNP choices |
|---|---|---|
| M12 / 2mm, flush | CJY12-02DNA/M CJY12-02DNB/M CJY12-02DNC/M | CJY12-02DPA/M CJY12-02DPB/M CJY12-02DPC/M |
| M12 / 4mm, nonflush | CJY12-04DNA/M CJY12-04DNB/M CJY12-04DNC/M | CJY12-04DPA/M CJY12-04DPB/M CJY12-04DPC/M |
| M18 / 5mm, flush | CJY18-05DNA/M CJY18-05DNB/M CJY18-05DNC/M | CJY18-05DPA/M CJY18-05DPB/M CJY18-05DPC/M |
| M18 / 8mm, nonflush | CJY18-08DNA/M CJY18-08DNB/M CJY18-08DNC/M | CJY18-08DPA/M CJY18-08DPB/M CJY18-08DPC/M |
| M30 / 10mm, flush | CJY30-10DNA/M CJY30-10DNB/M CJY30-10DNC/M | CJY30-10DPA/M CJY30-10DPB/M CJY30-10DPC/M |
| M30 / 15mm, nonflush | CJY30-15DNA/M CJY30-15DNB/M CJY30-15DNC/M | CJY30-15DPA/M CJY30-15DPB/M CJY30-15DPC/M |
| Housing / distance | DC two-wire NO / NC | AC two-wire NO / NC |
|---|---|---|
| M12 / 2mm | CJY12-02DLA/M CJY12-02DLB/M | No model listed |
| M12 / 4mm | CJY12-04DLA/M CJY12-04DLB/M | CJY12-04AKA/M CJY12-04AKB/M |
| M18 / 5mm | CJY18-05DLA/M CJY18-05DLB/M | CJY18-05AKA/M CJY18-05AKB/M |
| M18 / 8mm | CJY18-08DLA/M CJY18-08DLB/M | CJY18-08AKA/M CJY18-08AKB/M |
| M30 / 10mm | CJY30-10DLA/M CJY30-10DLB/M | CJY30-10AKA/M CJY30-10AKB/M |
| M30 / 15mm | CJY30-15DLA/M CJY30-15DLB/M | CJY30-15AKA/M CJY30-15AKB/M |
| Model group | Setting range | Standard iron target | Transistor frequency | DC two-wire frequency |
|---|---|---|---|---|
| CJY12-02/M, 2mm nominal | 0–1.4mm | 12×12×1mm | 1000Hz | 1000Hz |
| CJY12-04/M, 4mm nominal | 0–2.8mm | 500Hz | 500Hz | |
| CJY18-05/M, 5mm nominal | 0–3.5mm | 18×18×1mm | 500Hz | 500Hz |
| CJY18-08/M, 8mm nominal | 0–5.6mm | 25×25×1mm | 350Hz | 350Hz |
| CJY30-10/M, 10mm nominal | 0–7mm | 30×30×1mm | 400Hz standard; 350Hz premium version | 350Hz |
| CJY30-15/M, 15mm nominal | 0–10.5mm | 45×45×1mm | 200Hz | 200Hz |
All AC two-wire models are 20Hz. Frequencies are average values using the specified standard target, an interval between successive targets equal to twice the target width, and a target-to-sensor gap equal to half the nominal detection distance. Use the setting range to choose the operating gap.
| Parameter | NPN / PNP | DC two-wire | AC two-wire |
|---|---|---|---|
| Operating voltage | 10–30VDC | 90–250VAC | |
| Maximum output current | 200mA | ||
| Leakage current | ≤10mA | ≤0.6mA | ≤10mA |
| Residual voltage | ≤1V | ≤3.5V | ≤10V |
| Protection circuit | 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 | ||
Standard and IEC DC two-wire pinouts are different. Match the sensor variant to the cable assembly. Use the connector-face drawings in the attachment for pin numbering and orientation; the same M12 housing does not guarantee the same circuit assignment.
| Configuration | Active connections | Other pins | Load connection |
|---|---|---|---|
| Standard DC two-wire, NO or NC | Pin 4: brown / positive side; pin 3: blue / 0V side | Pins 1 and 2 unused | Load and sensor in series; load can be placed in either lead |
| IEC DC two-wire, NO | Pin 1: brown / positive side; pin 4: blue / 0V side | Pins 2 and 3 unused | |
| IEC DC two-wire, NC | Pin 1: brown / positive side; pin 2: blue / 0V side | Pins 3 and 4 unused | |
| Single-output NPN | Pin 1: brown / +V; pin 3: blue / 0V; pin 4: black / output | Pin 2 not assigned in the single-output diagram | Between +V and pin 4 |
| Single-output PNP | Pin 1: brown / +V; pin 3: blue / 0V; pin 4: black / output | Pin 2 not assigned in the single-output diagram | Between pin 4 and 0V |
| AC two-wire, NO or NC | Brown and blue are the two sides of the switching circuit | Pins 1 and 4 internally connected; pins 2 and 3 internally connected | Series load on 90–250VAC; load may be in either lead |
When a conventional DC three-wire cordset is used with the standard DC two-wire configuration, its black conductor on pin 4 is the positive-side connection and blue on pin 3 is 0V; brown on pin 1 is unused. The connector tightening torque is 0.39–0.49N·m. Secure the cable and connection with tape where vibration occurs, as described in the installation instructions. Complete output circuits and NO/NC timing charts remain in the attachment.
| Position | Code field | Meaning |
|---|---|---|
| 1 | CJ | Inductive sensing |
| 2 | Housing shape | Y=cylindrical metal; YG=cylindrical stainless steel; YS=cylindrical plastic. Full models above use Y; the other guide choices do not add unlisted full model combinations. |
| 3 | Size | 12=M12, 18=M18, 30=M30 for the listed models. The general guide also identifies 08=M8 without a corresponding full model here. |
| 4 | Product type | Blank=standard |
| 5 | Thread length | Blank=standard; L=long thread. Dimensions below apply to the illustrated standard bodies. |
| 6 | Detection distance | 02=2mm; 04=4mm; 05=5mm; 08=8mm; 10=10mm; 15=15mm |
| 7 | Voltage | A=90–250VAC; D=10–30VDC. E=20–60VDC and J=5–10VDC appear as general guide choices, without additional full models in these selection tables. |
| 8 | Output circuit | N=NPN; P=PNP; K=AC two-wire; L=DC two-wire |
| 9 | State | A=NO; B=NC; C=NO+NC |
| 10 | M | Straight male M12 four-pin A-coded connector, after the slash in the full model |
| Model / installation | Sensing thread | Overall axial reference | Thread-length reference | Front projection | Nut reference |
|---|---|---|---|---|---|
| CJY12-02/M, flush | M12×1 | 65mm | 50mm | Flush | Ø21mm, 17mm across flats, 4mm thick |
| CJY12-04/M, nonflush | 60mm | 45mm | 7mm | ||
| CJY18-05/M, flush | M18×1 | 65mm | 50mm | Flush | Ø29mm, 24mm across flats, 4mm thick |
| CJY18-08/M, nonflush | 60mm | 45mm | 10mm | ||
| CJY30-10/M, flush | M30×1.5 | 65mm | 50mm | Flush | Ø41mm, 36mm across flats, 5mm thick |
| CJY30-15/M, nonflush | 60mm | 45mm | 11mm | Ø41mm, 35mm across flats as drawn, 5mm thick |
Every illustrated rear connector has an M12×1 thread. Axial references follow the endpoints in the attachment and include the illustrated connector body, without a separate cordset. Indicator locations and mounting-nut geometry are retained in the dimension drawings.
The values below are millimeters. A is face-to-face spacing and B is parallel spacing as drawn. n is the head-exposure reference; Ød is the surrounding-metal opening diameter; ℓ and m use the axial and surrounding-metal endpoints in the installation drawing.
| Group | A | B | n | Ød | ℓ | m |
|---|---|---|---|---|---|---|
| CJY12-02/M | 12 | 24 | 0 | 12 | 6 | 18 |
| CJY12-04/M | 24 | 36 | 11 | 36 | 12 | 36 |
| CJY18-05/M | 30 | 36 | 0 | 18 | 15 | 27 |
| CJY18-08/M | 48 | 54 | 14 | 54 | 24 | 54 |
| CJY30-10/M | 60 | 60 | 0 | 30 | 30 | 45 |
| CJY30-15/M | 90 | 90 | 15 | 90 | 45 | 90 |
| Item | Specification |
|---|---|
| Protection / indication | IP65; 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 at 50/60Hz for 1min |
| Vibration | 1mm amplitude, 10–55Hz in a 1min sweep, 2h per X/Y/Z direction |
| Shock | 500m/s², approximately 50G, three times per X/Y/Z direction |
| Materials of the listed Y models | Nickel-plated brass case and nuts, nickel-plated iron washers, PBT sensing face |
| Referenced standards | CCC: GB/T14048.10; TÜV and CE: EN60947-5-2. Supporting certification documents are not supplied in the guide. |
| Utilization-category references | DC-13: 10–30VDC, 200mA; AC-140: 24–250VAC, 200mA. Individual model operating-voltage ratings remain those in the electrical table. |
Use for ordinary industrial metal-position detection within the stated target, gap, circuit and mounting conditions. Regional specifications can differ. The manufacturer excludes personnel-safety functions, exceptionally high-reliability nuclear, gas and power systems, severe outdoor or contaminated conditions, fire or explosion hazards, strong acids or alkalis, and military or aerospace applications unless specifically designed and confirmed for that use.
