Description
The rotary limit switch is a device which allows you to control the movement of industrial and building machines.
The shaft is connected to the motor, so that, after a certain number of turns, the cams make the switches work, and then they can carry out their pre-set manoeuvre. The range of FCN rotary limit switches has been planned with a particular internal symmetry that allows you to have a series of 5 microswitches (on-off exits) as well as some other linear exits, and a potentiometer in the same box.
The innovative and thorough regulation of the cams allows you to set the microswitches working point linearly and micrometrically. Reduction ratios range turns out to be remarkably large, since microswitches can be fitted with guaranteed opening (EN 60947-5-1) as well as deviation or progressive double opening contacts.
The choice of different cam profiles allows you to modify the limit switches function diagram.
Main Features
- Insulation voltage 250V~
- Maximum operating voltage 250V~
- Black lower casing reinforced nylon
- Yellow cover high mechanical and thermal resistant thermoplastic
- Operating temperature – 20 °C + 60 °C
- Drive worm screw
- Cable entries PG 11
- Protection against contact voltages double insulation
- Weight 460 g (approx.)
Regulation Criteria
Each cam is equipped with its own micrometer regulating screw. Each screw operates exclusively on the cam it is combined with, without interfering mechanically against its adjacent cams.
Regulation can simply be carried out by rotating the regulating screw through a small blade screwdriver. Thanks to a particular friction system, rapidity and regulation precision are assured, which makes the structure stable, steady and reliable.
Contact
| Microswitches | 1 NC safety slow type P |
| 1 NA NO safety 1 NC rapid typeD | |
| 2 NC safety progressive type M | |
| 1 NA 1 NC safety slow type MD | |
| Insulation Voltage Ui | 250 V~ |
| Test Voltage | 200 V~ |
| Operating current | 10³ A |
| Breaking power | secondo EN 60947-5-1 |
| Mechanical Lifetime | 2×10⁶ man |
| Terminals | with screws |
Performances
| AC15 | Volt | 24 | 48 | 110 | 230 |
| Ampere | 10 | 10 | 6 | 3 | |
| DC13 | Volt | 24 | 48 | 110 | 230 |
| Ampere | 3 | 1,5 | 1 | 0,5 |
Standard Executions
Reduction ratios
- 1:7,5 rotations
- 1:15 rotations
- 1:25 rotations
- 1:35 rotations
- 1:50 rotations
- 1:60 rotations
- 1:100 rotations
- 1:140 rotations
- 1:200 rotations
- 1:275 rotations
- 1:400 rotations
- 1:550 rotations
Standard executions are provided with 2 or even 4 contacts. Limit switches with 3 and 5 contacts can also be realized upon request and according to the necessary quantity.
Order Codes
| B | FCN | XXX | Y | Z |
| Group | Series | Reduction rations | Contact type (P-D-M-MD) | Contact numbers (2-3-4-5) |
Where a potentiometer is required, it is necessary to add after the number of contacts:
- K 5 for 5 Kohm potentiometer – K 10 for10 Kohm potentiometer
If not specified, limit switches are supplied with white type A cams. To specify a cam different from white type A, it is necessary to add:
- B for 45° level – C for 90° level – D for 180° level
Custom Execution
FCN limit switches can be customized according to the order quantity. Specific customizations:
- shafts cut to measure
- cable entry in frontal or lateral position
- different contacts
- regulation cams with different profiles
- measuring accessories, such as potentiometers or encoders
- customized nameplates
