Servomech S.p.A.
01.05.TR.E - Rev. 02 DD (M/Y) 12/19
13
6.2
FCP inductive proximity stroke limit switches
FCP inductive proximity stroke limit switches are available only for travelling screw jacks (Mod.A).
The INDUCTIVE PROXIMITY STROKE LIMIT SWITCHES allow the screw jack to stop before reaching the internal
mechanical stop avoiding damage. If intermediate sensors are present, they can be used to fix intermediate
positions along the screw jack stroke length. The inductive proximity stroke end switches are fixed directly
on the outer tube in the required position and are activated by a metallic ring fixed on the acme screw end.
The switches position is not adjustable.
The positions of the two limit switches are the extreme travel positions Lc and La (see Fig. 6.15).
FC 1 – sensor for RETRACTED SCREW JACK Lc position
FC 2 – sensor for EXTENDED SCREW JACK La position
Figure 6.1 – FCP inductive proximity stroke limit switches
Dimension P [mm]
MA 5
MA 10
MA 25
MA 50
MA 80
MA 100
MA 200
MA 350
T+FCP
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
T+AR+FCP
3.5
3.5
3.5
3.5
3.5
6
8.5
13.5
TG+FCP
3.5
3.5
3.5
3.5
8.5
8.5
8.5
8.5
TG+AR+FCP
3.5
3.5
3.5
3.5
3.5
6
8.5
13.5
Dimension P [mm]
SJ 5
SJ 10
SJ 25
SJ 50
SJ 100
SJ 150
SJ 200
SJ 250
SJ 300
SJ 350
SJ 400
SJ 600
SJ 800
SJ 1000
T+FCP
3.5
3.5
3.5
3.5
8.5
8.5
3.5
8.5
6
T+AR+FCP
3.5
3.5
3.5
3.5
6
8.5
8.5
13.5
10
Proximity switches are supplied already mounted on the screw jack and set to the correct sensing
distance.
DO NOT CHANGE THE SENSING DISTANCE OF PROXIMITY SWITCHES BY MOVING THE TWO NUTS
FIXED ON THE SENSOR.
In case it is necessary to restore the correct sensing distance position, please refer to Fig. 6.1.
In case the screw jack is not stopped after the sensor activation, when the metal ring moves away,
the sensor restores the original state (becomes deactivated).
In case the limit switches are used to stop the screw jack, we recommend to provide an electric
connection in order to latch the signal and to prevent the screw jack from moving again in the same
direction.
DO NOT TRAVEL OVER THE STROKE LIMIT SWITCHES POSITIONS, AVOIDING TO REACH MECHANICAL
STOP AND PREVENTING DAMAGE TO THE INTERNAL COMPONENTS OF THE SCREW JACK.
