Airtac CS1M Reed Sensor CS1M020A20
The AirTAC Airtac CS1M Reed Sensor CS1M020A20 is a genuine CS1 reed (mechanical-contact) magnetic switch, normally open, that senses the piston magnet in a pneumatic cylinder. As a dry 2-wire contact it switches AC or DC across 5-240 V, supplied with a 2 m cable. The M type fits PB, MA, MAL, MI, MF. It carries a red led and is rated IP67.
- TypeReed contact, SPST normally open
- Wiring2-wire (Red LED)
- Supply5 - 240 V AC/DC
- Max current / capacity100 mA / 10 W
- Connection2 m cable
- Fits (M)PB, MA, MAL, MI, MF
- Sensitivity45-75 Gauss (by bore)
- ProtectionIP67 (NEMA6)
About the Airtac CS1M Reed Sensor CS1M020A20
The AirTAC CS1M020A20 is a reed magnetic switch, normally open, for band-mounting on tie-rod and mini cylinders. It reads the piston magnet and switches AC or DC across 5-240 V, giving one part that fits both AC control gear and a 24 V DC PLC. The 2 m cable carries a red LED for quick setup.
The M type wraps on with a band and its order carries a tube-material and bore code; here an aluminium 20 mm bore. It fits PB, MA, MAL, MI and MF cylinders, has a 100 mA / 10 W contact with no leakage, and is IP67 rated from -10 to 70 C.
Airtac CS1M Reed Sensor CS1M020A20 Technical Specifications
| Model | Airtac CS1M Reed Sensor CS1M020A20 |
|---|---|
| Switch kind | Reed contact, SPST, normally open |
| Wiring | 2-wire (Red LED) |
| Supply voltage | 5 - 240 V AC/DC |
| Max switching current | 100 mA |
| Max contact capacity | 10 W (10 VA) |
| Residual voltage | 2.5 V max at 100 mA |
| Connection | 2 m cable |
| Sensitivity | 45-75 Gauss (by bore) |
|---|---|
| Indicator | Red LED |
| Leakage / internal draw | None (dry contact) |
| Max switching frequency | 200 Hz |
| Shock / vibration | 300 / 90 m/s2 |
| Temperature | -10 to 70 C |
| Protection rating | IP67 (NEMA6) |
| Fits (M type) | PB, MA, MAL, MI, MF |
Specifications follow the official AirTAC CS1 data. Band-mount; the order carries a tube-material and bore code. Switching an inductive or lamp load arcs the contact, so add a flyback diode (DC) or RC snubber (AC) to extend life. Exact fit and accessory codes are confirmed from the datasheet on request.
How to choose
Pick the reed CS1 when AC-or-DC operation, zero leakage or a direct relay/lamp drive matters; pick the solid-state DS1 for very high speed or cycle life. The band-mount M type suits round mini bodies where a clip or groove switch will not seat. Match the material and bore code to your cylinder.
The 10 W contact holds current well under the 100 mA limit at 24 V, so a PLC input sits comfortably in range. Add a flyback diode or RC snubber when the switch drives a coil.
Applications
Mini-cylinder clamp check
Confirms a small MI clamp has closed on a part before machining starts.
PB transfer position
Signals a PB pen cylinder has reached its transfer stop on a light jig.
MA cycle count
Counts strokes of an MA cylinder into a PLC for maintenance planning.
FAQ
How does the M type mount?
It band-mounts: a strap wraps the round body and a set screw locks it. The order carries a tube-material and bore code, here aluminium 20 mm.
Can it drive a relay directly?
Yes, within the 100 mA / 10 W contact rating. For an inductive coil add a flyback diode (DC) or RC snubber (AC) to protect the contact.