Watts valpes VRA Mode D'emploi page 19

Table des Matières

Les langues disponibles

VRA and VSA POSI actuators

Various control types (control signal on terminals N°15 and N°16)

On request, our cards can be set in factory. The consign and the feedback signal can have different forms (current or voltage).

Without any information from the customer, the cards are set for current 4-20mA (control + feedback signal).

Control in 0-10V modes:

In case of outside event, absence of control signal (accidental wires cut for example) but in presence of power, the

actuator will travel to deﬁned position (open or closed valve).

In standard our actuators will close themselves in absence of control signal but there are other possibilities on re-

quest.

Control in 4-20mA mode:

In case of outside event, absence of control signal (accidental wires cut for example) but in presence of power, the actuator will

stay in its position.

In the both cases, when the control signal is restored, the actuator reach automatically the position corresponding to control

signal value.

VRA and VSA POSI range

Star drive nut

Code

Connection

VRA25.70A.GP5

17 (0.67in) F05/F07

VRA25.70B.GP5

17 (0.67in) F05/F07

VRA45.70A.GP5

17 (0.67in) F05/F07

VRA45.70B.GP5

17 (0.67in) F05/F07

VRA75.70A.GP5

17 (0.67in) F05/F07

VRA75.70B.GP5

17 (0.67in) F05/F07

VSA100.90A.GP5

22 (0.87in) F07/F10

VSA100.90B.GP5

22 (0.87in) F07/F10

VSA150.90A.GP5

22 (0.87in) F07/F10

VSA150.90B.GP5

22 (0.87in) F07/F10

VSA300.90A.GP5

22 (0.87in) F07/F10

VSA300.90B.GP5

22 (0.87in) F07/F10

Please consider 1.5 safety factor (and 2.0 safety factor for POSI version) when sizing the actuator

Torque

25Nm (222in.lbf)