Servomech S.p.A.
02.02-05-08-10-11-12.E - Rev. 00 Date (M/Y) 12/19
18
Check if the push rod shifting direction is compatible to the indications on the control unit, by powering the
electric motor on VERY BRIEFLY.
Figure 6.11 – Push rod shifting directions
If the push rod shifting directions are not compatible:
A) ACTUATOR WITH THREE-PHASE MOTOR: invert any wire pair (U1
V1, or U1
W1, or V1
W1) into the
terminal board;
B) ACTUATOR WITH SINGLE-PHASE MOTOR: change the contact (V1
W1);
C) ACTUATOR WITH DIRECT CURRENT MOTOR: invert contacts of the two motor supply cables.
6.7
Linear actuator installation
THE BALL SCREW LINEAR ACTUATOR (BSA SERIES) IS NOT SELF-LOCKING. BEFORE TO APPLY ANY
AXIAL LOAD ON THE PUSH ROD, LOCK THE INPUT SHAFT OR USE THE MOTOR BRAKE.
ALL MECHANICAL AND ELECTRICAL PROTECTION MUST BE INSTALLED AND ACTIVATED TO PREVENT
DAMAGE TO PERSONS OR PROPERTY.
•
Check that all plant fixing elements are well machined and cleaned, and that they fit the dimensions of
the actuators fixing elements they have to be fixed to.
•
If the length of the actuator have to be changed (push rod more retracted or extended) during
installation, power the motor with limited speed and torque values, in order to avoid possible damages
in case of a mechanical stop is reached.
•
In case of actuators without ectrical limit switches device (FCE), it is possible to manually screw/unscrew
the push rod to change the length of the actuator.
•
In case of actuators with bellow protection (B): DO NOT TWIST THE BELLOW.
DO NOT SET THE LENGTH OF THE ACTUATOR OVER ITS EXTREME VALUES:
“Lc” = RETRACTED ACTUATOR
“La” = EXTENDED ACTUATOR
Figure 6.12 – “Lc” and “La” dimensions
Dimensions “Lc” and “La” are indicated in the technical catalogue of the product.