Servomech S.p.A.
21.15-25-50-100-150-200.E - Rev. 01 DD (M/Y) 10/19
11
6.3
FC electric stroke limit switches
The ELECTRIC STROKE END SWITCHES FC allow to limit the actuator stroke avoiding to reach the extreme
positions (mechanical stops) and preventing damage. The device consists of two switch assemblies, each of
them containing one miniature electric switch (FC 1, FC 2) which is operated when the actuator reaches the
stroke end position. When the actuator proceeds on opposite direction, there is a spring that allows the
return of switch to its neutral position, thus deactivating the switch. The entire assembly is covered by a
cover and sealed by a rubber seal.
The electric stroke end switches FC are available for actuators ILA 100, ILA 150 and ILA 200.
The activation positions of the two limit switches are the extreme travel positions Lc and La (see Fig.
6.9).
FC 1 – sensor for RETRACTED ACTUATOR Lc position
FC 2 – sensor for EXTENDED ACTUATOR La position
FigurE 6.2 – FC electric stroke limit switches
The position of the assembly along the outer tube is not adjustable.
The device cannot be used to fix any intermediate position.
The ELECTRIC STROKE LIMIT SWITCHES must be connected to the electric control circuit as shown in the
following WIRING DIAGRAM:
CIRCUITO DI COMANDO
INTERRUTTORI ELETTRICI – CARATTERISTICHE TECNICHE
Contact
NC (normally closed)
Supply voltage
250 V AC
125 V AC
125 V DC
Current
(resistive load)
16 A
16 A
0.6 A
Current
(inductive load)
10 A
10 A
0.6 A
Output
2 PVC multicore cables 2 × 0.75 mm
2
length 1.5 m
Wiring
DO NOT TRAVEL OVER THE STROKE LIMIT SWITCHES POSITIONS, AVOIDING TO REACH MECHANICAL
STOP AND PREVENTING DAMAGE TO THE INTERNAL COMPONENTS OF THE ACTUATOR.