Edificio Genebre. Av. de Joan Carles I, 46-48
08908 L'Hospitalet de Llobregat. Barcelona (Spain)
genebre@genebre.es - www.genebre.es
GENEBRE S.A.
FECHA DE REVISIÓN: 16/03/2020 NUMERO DE REVISIÓN: 1
3
1. Product Description
The Digital Positioner is a fitting the electric actuator to convert the actuator in a self-
control valve positioner.
The Digital Positioner is a modulus with a microprocessor (CPU) which manages digitally
the analogical input and output and compare them with the position of the actuator to
establish an uniform relation.
The analogical inputs are sent to CPU where they are processed for his continuous
comparison with the position of the actuator, this allows to obtain a very high sensitivity
next to a very high repetitivity of the position (see characteristics).
The Digital Positioner in communication with the electronic system of the actuator
provides an integral management of the motion on the actuator.
Sign position input is converted to a digital numerical value and is continuously compared
with the position of potentiometer which is mechanically fitted to the valve shaft.
The programme in the microchip makes all the necessary calculations to determine which
way the motor should turn so that the potentiometer position and the valve corresponds
to the position, it keeps the motor in stopped position until it receives an input signal.
2. Technical Features & Data
General Features
Input Signal
4
– 20 mA / 0 – 10 V / 1 – 10 V
(
NC or NO
)
Output Signal
4
– 20 mA / 0 – 10 V / 1 – 10 V
Precision
3 % F.S.
Linearity
2 % F.S.
Hysteresis
3 % F.S.
Steps at 4-20 mA
Min. 150 steps 90º
Steps at 0-10 V
Min. 98 steps 90º
4-20 mA Input signal impedance
100 Ohm
0-10 V Input signal impedance
25 KOhm
