Description
Structure
The T.VIS® A-15 is equipped with a precise path measuring system for detecting its position. The necessary wiring for control and feedback is performed, depending on the requirements, via the M12 plug connections accessible from the outside or through direct wiring and cable glands. The control top can be opened for this.
Operation and configuration of the T.VIS® A-15 takes place either by the two push buttons on the cap or, with the cap removed, via the buttons below. The push buttons are secured electronically against inadvertent or incorrect operation, while in operating mode.
A replaceable filter, in the supply air connection, protects the solenoid valves.
Position detecting
Path measuring system – the valve position is registered by means of a highly modern path measuring system.
Setting
Automatic – following unlocking, simply pressing the two buttons on the cap on the T.VIS® A-15 starts the initialization process which runs fully automatically. There is no need to open the control top for this purpose, resulting in particularly quick, easy and safe commissioning of the control top (on average < 1 minute).
Immediately following the set-up, it is possible to set the open/close position tolerances and signal attenuation in the parameter menu.
Service mode
Activation of the main stroke which may be required in VARIVENT® and ECOVENT® valves with open non-actuated position for valve maintenance is performed using the service mode which can be activated by the buttons. At the same time, all feedbacks are stopped (warning to the system control).
Furthermore, input signals from the control room are not implemented by the T.VIS®, in order to protect the employee.
