670 Electric tie-rod servomotor to 10 kN ZEPADYN


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Servomotors are direct, tie-rod, with constant control speed of adjustment of the outlet part. The reversing asynchronous motor and self-locking gear mechanism are stored in the box with removable lid. Conductors are brought in through sealing outlets. The outlet tie-rod is ended with a coupling for connecting with a valve. The design is solved so that the connection elements can be attached pursuant to the design of the relevant valve (flange, columns, etc.).
The control can be ensured either with a three-point connection or position control, signal 0 to 1V, 0 to 10 V, 0 to 20 mA and 4 to 20 mA. It transfers the inlet analogue signal to the corresponding position of the servomotor. The position is sensed by the resistance transmitter. It can be completed with a sensor for checking maximum temperature of the motor, which trips it and activates signalling after the maximum preset
value has been exceeded. The inlet signal can be changed with interconnected pieces, limit positions can be adjusted by means of push-buttons or by means of a computer. It can also be used for adjusting the upper and the lower insensitivity zones, changing the course of movement of the servomotor with respect to the inlet signal (e.g. linear, quadratic, logarithmic or user-defined in 100 points), type of operation of
the controls in case of exceeding the adjusted range by 5 % (open, close, without response, movement to the end position in the direction of the signal).
In addition to strength switches, position indicators, thermal fuse of the driving motor and manual control, they can be equipped with:
- two signalling switches, adjustable in the whole range of the operation lift;
- resistance position transmitter 100 Ω (one or two);
- resistance position transmitter with signal converter 4 to 20 mA for two-wire connection to measuring loop (power supply directly from measured signal);
- capacity position transmitter CPT1 / A - signal 4 to 20 mA, double wire (power supply from auxiliary source);
- heating resistor.

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  • Pražská 470
  • 50939  Nová Paka
  • Czech republic
  • Telephone: +420 493 761 394
  • Fax: +420 493 721 194
  • E-mail: david.franek@zpanp.cz