ARI Armaturen ARI-PREMIO - Manual (Page 26)

Page 26 0040501000 4511
Operating and installation instructions
Thrust actuator ARI-PREMIO
The optional boards may only be installed at the factory due to the switching points of the
load-dependent switches having to be reset following installation of these boards!
5.5.3 Travel switch
The thrust actuators can be equipped with an additional stroke-switch board containing two
travel switches (double-throw contact S4 and S5).
These switches can be set on infinitely variable lines over the entire stroke distance in both
lift directions and integrated at will into the facility control system (no interlock-controlled
circuitry).
The maximum switching capacity of the switches (see point “4.4 Technical data”) must not
be exceeded.
For low voltage (see point “4.4 Technical data”), the additional travel switches are supplied
with gold contacts (option: low-voltage travel switch).
As construction continues, the actuator travels at the end-position into a plate spring
package and thus builts the actuators force. There is no travel further on, so the additional
limit switches signalise the end position already, before the actuator has built the actuator
force.
Only after the actuating force has been reached, the motor will be switched-off by the
internal torque switch.
In order to switch-off the motor by limit switches S4 and S5 in the end position,
- either the motor has to be provided with a release delay from min. 10 s after the additional
limit switches were switched,
- or the torque switches have ot be queried directly. For this, the optional PA-connection
board is required. Please observe notes at „5.5.2 Connection boards PA or NA (only 2.2 -
5 kN)“ .
ATTENTION !
- When using optional boards PA or NA, it must be warranted - due to the
operator’s individual circuitry- that, when switching the load-dependent travel
switches S11/21, S12/S22 and S13/S23 the motor of the thrust actuator comes
to a standstill without delay.
This function is not provided for on the optional boards PA and NA in the
supplied state!
NOTE !
- The internal torque switches (S1 and S2) are not switched synchronously to the
additional limit switches (S4 and S5) in the end position!
CONCLUSION !
- If the motor is switched-off by the additional limit switches S4 or S5, then the
actuator builds no force. The valve does not close tightly!